10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2025

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ______ to ______

Commission File Number: 001-41983

_________________________

Reddit, Inc.

(Exact name of registrant as specified in its charter)

_________________________

Delaware	45-2546501
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
303 2nd Street, South Tower, 5th Floor San Francisco, California	94107
(Address of principal executive offices)	(Zip Code)

(415) 494-8016

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Class A common stock, par value $0.0001 per share	RDDT	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	o	Accelerated filer	o
Non-accelerated filer	x	Smaller reporting company	o
		Emerging growth company	o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No x

As of July 30, 2025, the registrant had outstanding 134,585,853 shares of Class A common stock, 52,570,328 shares of Class B common stock, and no shares of Class C common stock, each with a par value of $0.0001.

Table of Contents

	Page
Note Regarding Forward-Looking Statements	2
Note Regarding User Metrics and Other Data	4
Part I. Financial Information
Item 1. Financial Statements (unaudited)	5
Consolidated Balance Sheets	5
Consolidated Statements of Operations	6
Consolidated Statements of Comprehensive Income (Loss)	7
Consolidated Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit)	8
Consolidated Statements of Cash Flows	10
Notes to the Consolidated Financial Statements	11
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	22
Item 3. Quantitative and Qualitative Disclosures About Market Risk	35
Item 4. Controls and Procedures	35
Part II. Other Information
Item 1. Legal Proceedings	37
Item 1A. Risk Factors	37
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	72
Item 3. Defaults Upon Senior Securities	72
Item 4. Mine Safety Disclosures	72
Item 5. Other Information	72
Item 6. Exhibits	74
Signatures

NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains forward-looking statements about us and our industry that involve substantial risks and uncertainties. All statements other than statements of historical facts contained in this Quarterly Report on Form 10-Q, including statements regarding our strategy, future financial condition, future operations, projected costs, prospects, plans, objectives of management, and expected market growth, are forward-looking statements. In some cases, you can identify forward-looking statements because they contain words such as “may,” “will,” “shall,” “should,” “expects,” “plans,” “anticipates,” “could,” “intends,” “target,” “projects,” “contemplates,” “believes,” “estimates,” “predicts,” “potential,” “goal,” “objective,” “seeks,” or “continue,” or the negative of these words or other similar terms or expressions that concern our expectations, strategy, plans, or intentions. Forward-looking statements contained in this Quarterly Report on Form 10-Q include, but are not limited to, statements about:

•our strategies to increase awareness of Reddit, including through search engine optimization, partnerships, and investment in full-funnel marketing;

•our strategies to increase user growth and engagement;

•our expectations regarding the growth and availability of valuable and appealing user-generated content on our platform;

•our ability to develop new products and services and bring them to market in a timely manner and make enhancements to our platform;

•our ability to implement artificial intelligence and machine learning to increase user growth and engagement and support advertising growth;

•user and advertiser growth strategies in geographies outside of the United States and in languages besides English;

•strategies to increase revenue from new and existing advertisers, including by (i) evolving our service model to more types of advertisers and building deeper advertiser relationships, (ii) providing product opportunities and offerings that

2

deliver value to our advertisers, and (iii) developing measurements solutions to increase the effectiveness of our advertisers’ return on investment;

•strategies to expand revenue from non-advertising sources, like content licensing;

•strategies to empower Redditors, including monetization tools for creators and communities;

•our content moderation model relative to complex content ranking algorithms;

•our ability to attract and retain Redditors and their level of engagement;

•the impact of the macroeconomic environment, including as a result of the ongoing conflicts in Ukraine and in the Middle East, as well as tariffs or other trade restrictions by the United States and other countries, on our business and other uncertainties in the global economy generally;

•our ability to maintain and enhance our brand and reputation;

•our history of losses and ability to maintain profitability in the foreseeable future;

•our ability to maintain the security and availability of our platform and protect against data breaches and other security incidents;

•our ability to manage risks associated with our business, in particular, risks related to content on our platform, and our content moderation approach, which depends on users who volunteer to be moderators of their communities;

•potential harm caused by changes in internet search engines’ methodologies, particularly search engine optimization methodologies and policies;

•our ability to attract and retain advertisers and scale our revenue model;

•our ability to develop effective products and tools for advertisers, including measurement tools;

•our ability to compete effectively in our industry;

•our ability to expand and monetize our platform internationally;

•fluctuations in our operating results and seasonality of our business;

•our ability to comply with modified or new laws and regulations applying to our business, and potential harm to our business as a result of those laws and regulations;

•changes in technology or methodology that impact our calculation of DAUq, including our ability to identify automated agents on our platform;

•real or perceived inaccuracies in current or historical metrics related to our business;

•the increased expenses associated with being a public company;

•our ability to effectively manage our growth and expand our infrastructure and maintain our corporate culture;

•expectation of increased losses and decline in operating margins as we invest in product improvements and innovations and our international growth;

•challenges in increasing ARPU on an absolute basis outside of the United States;

•potential need to absorb the costs related to investments in product improvements and innovations without generating sufficient revenue to offset these costs;

•our opportunity to continue to grow our DAUq in the United States and around the world and our focus on growing our platform globally, including through entering new geographic markets and investing in under-penetrated ones;

•our aim to increase DAUq by scaling internationally, developing products that are more compelling for our users, and improving the quality of our products across all platforms;

3

•our expectation of an increase in our costs and expenses from the launch of new ad formats, products, and features, primarily as a result of additional hosting costs, although most of these areas of focus will not initially generate revenue;

•potential decline in users due to a reduction in third-party applications;

•potential near-term volatility in Redditor and revenue growth rates;

•sufficiency of our existing cash, cash equivalents, and marketable securities and amounts available under our revolving credit facility to meet our working capital and capital expenditure needs over at least the next 12 months; and

•other risks and uncertainties described in this Quarterly Report on Form 10-Q, including those described in “Risk Factors.”

We caution you that the foregoing list does not contain all of the forward-looking statements made in this Quarterly Report on Form 10-Q.

We have based the forward-looking statements contained in this Quarterly Report on Form 10-Q primarily on our current expectations, estimates, forecasts, and projections about future events and trends that we believe may affect our business, results of operations, financial condition, and prospects. Although we believe that we have a reasonable basis for each forward-looking statement contained in this Quarterly Report on Form 10-Q, we cannot guarantee that the future results, levels of activity, performance, or events and circumstances reflected in the forward-looking statements will be achieved or occur at all. The outcome of the events described in these forward-looking statements is subject to risks, uncertainties, and other factors described in “Risk Factors” and elsewhere in this Quarterly Report on Form 10-Q. Moreover, we operate in a very competitive and rapidly changing environment. New risks and uncertainties emerge from time to time, and it is not possible for us to predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this Quarterly Report on Form 10-Q. The results, events, and circumstances reflected in the forward-looking statements may not be achieved or occur, and actual results, events, or circumstances could differ materially from those described in the forward-looking statements.

The forward-looking statements made in this Quarterly Report on Form 10-Q relate only to events as of the date on which the statements are made. We undertake no obligation to update any forward-looking statements made in this Quarterly Report on Form 10-Q to reflect events or circumstances after the date of this Quarterly Report on Form 10-Q or to reflect new information or the occurrence of unanticipated events, except as required by law. We may not actually achieve the plans, intentions, or expectations disclosed in our forward-looking statements, and you should not place undue reliance on our forward-looking statements. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures, or investments we may make.

NOTE REGARDING USER METRICS AND OTHER DATA

We define a daily active unique (“DAUq”) as a user whom we can identify with a unique identifier who has visited a page on the Reddit website, www.reddit.com, or opened a Reddit application at least once during a 24-hour period. We calculate average DAUq for a particular period by adding the number of DAUq on each day of that period and dividing that sum by the number of days in that period. We define a weekly active unique (“WAUq”) as a user whom we can identify with a unique identifier who has visited a page on the Reddit website, www.reddit.com, or opened a Reddit application at least once during a trailing seven-day period. We calculate average quarterly WAUq for a particular period by adding the number of WAUq on each day of that period and dividing that sum by the number of days in that period. We define average revenue per unique (“ARPU”) as quarterly revenue in a given geography divided by the average DAUq in that geography. For the purposes of calculating ARPU, advertising revenue in a given geography is based on the geographic location in which advertising impressions are delivered, as this approximates revenue based on user activity, while other revenue in a given geography is based on the billing address of the customer.

We regularly review and continually seek to improve the accuracy of, and our ability to track, such metrics. While these metrics are based on what we believe to be reasonable calculations for the applicable period of measurement, there are inherent challenges given the complexity of the systems involved and the rapidly changing nature of mobile devices and systems.

4

Part I - Financial Information

Item 1. Financial Statements

Reddit, Inc.

Consolidated Balance Sheets

(in thousands, except share and per share amounts)

	June 30, 2025		December 31, 2024
	(unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	734,060	$	562,092
Marketable securities	1,325,881		1,278,717
Accounts receivable, net	407,228		349,534
Prepaid expenses and other current assets	62,761		33,058
Total current assets	2,529,930		2,223,401
Property and equipment, net	11,394		12,652
Operating lease right-of-use assets, net	22,118		23,249
Intangible assets, net	20,469		25,424
Goodwill	42,174		42,174
Other noncurrent assets	6,117		9,695
Total assets	$	2,632,202	$	2,336,595
LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT)
Current liabilities:
Accounts payable	$	63,942	$	45,423
Operating lease liabilities	6,572		6,137
Accrued expenses and other current liabilities	140,317		124,464
Total current liabilities	210,831		176,024
Operating lease liabilities, noncurrent	18,611		20,565
Other noncurrent liabilities	15,780		9,257
Total liabilities	245,222		205,846
Commitments and contingencies (Note 10)
Stockholders’ equity (deficit):
Preferred stock, par value $0.0001 per share; 100,000,000 shares authorized as of June 30, 2025 and December 31, 2024; no shares issued and outstanding as of June 30, 2025 and December 31, 2024	—		—
Class A common stock, par value $0.0001 per share; 2,000,000,000 shares authorized as of June 30, 2025 and December 31, 2024; 131,962,529 and 125,001,880 shares issued and outstanding as of June 30, 2025 and December 31, 2024, respectively	13		12
Class B common stock, par value $0.0001 per share; 140,000,000 shares authorized as of June 30, 2025 and December 31, 2024; 55,112,126 and 55,314,099 shares issued and outstanding as of June 30, 2025 and December 31, 2024, respectively	5		5
Class C common stock, par value $0.0001 per share; 100,000,000 shares authorized as of June 30, 2025 and December 31, 2024; no shares issued and outstanding as of June 30, 2025 and December 31, 2024	—		—
Additional paid-in capital	3,468,618		3,331,546
Accumulated other comprehensive income (loss)	3,727		24
Accumulated deficit	(1,085,383)		(1,200,838)
Total stockholders’ equity (deficit)	2,386,980		2,130,749
Total liabilities and stockholders’ equity (deficit)	$	2,632,202	$	2,336,595

The accompanying notes are an integral part of these financial statements.

5

Reddit, Inc.

Consolidated Statements of Operations

(in thousands, except share and per share amounts)

(unaudited)

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
Revenue	$	499,627	$	281,184	$	891,988	$	524,147
Costs and expenses:
Cost of revenue	45,900		29,501		82,989		57,117
Research and development	196,610		142,777		387,881		579,807
Sales and marketing	120,619		71,458		211,304		195,553
General and administrative	68,787		68,487		138,200		311,964
Total costs and expenses	431,916		312,223		820,374		1,144,441
Income (loss) from operations	67,711		(31,039)		71,614		(620,294)
Other income (expense), net	21,147		20,724		41,681		35,278
Income (loss) before income taxes	88,858		(10,315)		113,295		(585,016)
Income tax expense (benefit)	(439)		(216)		(2,160)		149
Net income (loss)	$	89,297	$	(10,099)	$	115,455	$	(585,165)
Net income (loss) per share attributable to Class A and Class B common stock (Note 4)
Basic	$	0.48	$	(0.06)	$	0.63	$	(4.99)
Diluted	$	0.45	$	(0.06)	$	0.58	$	(4.99)
Weighted-average shares of Class A and Class B common stock used to compute net income (loss) per share attributable to common stockholders
Basic	185,437,777		164,382,736		183,730,992		117,311,614
Diluted	199,522,433		164,382,736		200,681,458		117,311,614

The accompanying notes are an integral part of these financial statements.

6

Reddit, Inc.

Consolidated Statements of Comprehensive Income (Loss)

(in thousands)

(unaudited)

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
Net income (loss)	$	89,297	$	(10,099)	$	115,455	$	(585,165)
Other comprehensive income (loss), net of tax:
Change in unrealized gains (losses) on marketable securities	(158)		(528)		185		(1,800)
Change in foreign currency translation adjustment	2,571		(4)		3,518		(18)
Net comprehensive income (loss)	$	91,710	$	(10,631)	$	119,158	$	(586,983)

The accompanying notes are an integral part of these financial statements.

7

Reddit, Inc.

Consolidated Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit)

(in thousands, except share amounts)

(unaudited)

	Three months ended June 30, 2024
	Common Stock						Additional Paid-in Capital		Accumulated Other Comprehensive Income (Loss)		Accumulated Deficit		Total Stockholders’ Equity (Deficit)
	Class A			Class B
	Shares	Amount		Shares	Amount
Balance as of March 31, 2024	44,286,735	$	4	119,059,756	$	12	$	3,130,384	$	(472)	$	(1,291,628)	$	1,838,300
Issuance of common stock upon exercise of stock options, net	252,962	—		7,700	—		1,843		—		—		1,843
Issuance of common stock upon settlement of restricted stock units, net	1,989,556	—		37,382	—		—		—		—		—
Conversion of Class B common stock to Class A common stock	15,950,209	2		(15,950,209)	(2)		—		—		—		—
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering	—	—		—	1		1		—		—		2
Stock-based compensation expense	—	—		—	—		64,266		—		—		64,266
Vesting of early exercised stock options	—	—		—	—		55		—		—		55
Net income (loss)	—	—		—	—		—		—		(10,099)		(10,099)
Change in other comprehensive income (loss)	—	—		—	—		—		(532)		—		(532)
Balance as of June 30, 2024	62,479,462	$	6	103,154,629	$	11	$	3,196,549	$	(1,004)	$	(1,301,727)	$	1,893,835
	Three months ended June 30, 2025
	Common Stock						Additional Paid-in Capital		Accumulated Other Comprehensive Income (Loss)		Accumulated Deficit		Total Stockholders’ Equity (Deficit)
	Class A			Class B
	Shares	Amount		Shares	Amount
Balance as of March 31, 2025	129,145,465	$	13	55,121,821	$	5	$	3,390,469	$	1,314	$	(1,174,680)	$	2,217,121
Issuance of common stock upon exercise of stock options, net	358,393	—		629,769	—		4,303		—		—		4,303
Issuance of common stock upon settlement of restricted stock units, net	1,801,956	—		17,251	—		(15,224)		—		—		(15,224)
Conversion of Class B common stock to Class A common stock	656,715	—		(656,715)	—		—		—		—		—
Stock-based compensation expense	—	—		—	—		89,070		—		—		89,070
Net income (loss)	—	—		—	—		—		—		89,297		89,297
Change in other comprehensive income (loss)	—	—		—	—		—		2,413		—		2,413
Balance as of June 30, 2025	131,962,529	$	13	55,112,126	$	5	$	3,468,618	$	3,727	$	(1,085,383)	$	2,386,980

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Reddit, Inc.

Consolidated Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit)

(in thousands, except share amounts)

(unaudited)

	Six months ended June 30, 2024
	Total Convertible Preferred Stock			Common Stock						Additional Paid-in Capital		Accumulated Other Comprehensive Income (Loss)		Accumulated Deficit		Total Stockholders’ Equity (Deficit)
				Class A			Class B
	Shares	Amount		Shares	Amount		Shares	Amount
Balance as of December 31, 2023	73,021,449	$	1,853,492	7,099,700	$	—	53,904,204	$	6	$	302,820	$	814	$	(716,562)	$	(412,922)
Issuance of common stock upon exercise of stock options, net	—	—		3,394,138	—		813,648	—		24,932		—		—		24,932
Issuance of common stock upon settlement of restricted stock units, net	—	—		8,162,928	1		661,497	—		(202,853)		—		—		(202,852)
Conversion of Class B common stock to Class A common stock	—	—		20,142,152	2		(20,142,152)	(2)		—		—		—		—
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering	(73,021,449)	(1,853,492)		5,104,017	1		67,917,432	7		1,853,486		—		—		1,853,494
Issuance of common stock in connection with initial public offering, net of underwriting discounts and commissions and other offering costs	—	—		18,576,527	2		—	—		576,266		—		—		576,268
Stock-based compensation expense	—	—		—	—		—	—		641,774		—		—		641,774
Vesting of early exercised stock options	—	—		—	—		—	—		124		—		—		124
Net income (loss)	—	—		—	—		—	—		—		—		(585,165)		(585,165)
Change in other comprehensive income (loss)	—	—		—	—		—	—		—		(1,818)		—		(1,818)
Balance as of June 30, 2024	—	$	—	62,479,462	$	6	103,154,629	$	11	$	3,196,549	$	(1,004)	$	(1,301,727)	$	1,893,835
	Six months ended June 30, 2025
	Total Convertible Preferred Stock			Common Stock						Additional Paid-in Capital		Accumulated Other Comprehensive Income (Loss)		Accumulated Deficit		Total Stockholders’ Equity (Deficit)
				Class A			Class B
	Shares	Amount		Shares	Amount		Shares	Amount
Balance as of December 31, 2024	—	$	—	125,001,880	$	12	55,314,099	$	5	$	3,331,546	$	24	$	(1,200,838)	$	2,130,749
Issuance of common stock upon exercise of stock options, net	—	—		1,363,474	—		1,456,450	—		14,487		—		—		14,487
Issuance of common stock upon settlement of restricted stock units, net	—	—		3,904,250	1		34,502	—		(51,899)		—		—		(51,898)
Conversion of Class B common stock to Class A common stock	—	—		1,692,925	—		(1,692,925)	—		—		—		—		—
Stock-based compensation expense	—	—		—	—		—	—		174,484		—		—		174,484
Net income (loss)	—	—		—	—		—	—		—		—		115,455		115,455
Change in other comprehensive income (loss)	—	—		—	—		—	—		—		3,703		—		3,703
Balance as of June 30, 2025	—	$	—	131,962,529	$	13	55,112,126	$	5	$	3,468,618	$	3,727	$	(1,085,383)	$	2,386,980

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Reddit, Inc.

Consolidated Statements of Cash Flows

(in thousands)

(unaudited)

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
Cash flows from operating activities
Net income (loss)	$	89,297	$	(10,099)	$	115,455	$	(585,165)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,934		3,770		7,897		7,513
Non-cash operating lease cost	1,514		1,335		2,982		2,588
Amortization of premium (accretion of discount) on marketable securities, net	(6,691)		(11,362)		(15,575)		(19,491)
Stock-based compensation expense	89,070		64,266		174,484		641,774
Other adjustments	97		141		(41)		626
Changes in operating assets and liabilities:
Accounts receivable	(81,116)		(24,793)		(57,757)		5,194
Prepaid expenses and other assets	(9,352)		(6,270)		(26,358)		(20,182)
Operating lease right-of-use assets and liabilities	(1,589)		(780)		(3,369)		(1,310)
Accounts payable	19,991		18,220		18,945		16,042
Accrued expenses and other liabilities	6,176		(6,043)		22,246		12,860
Net cash provided by (used in) operating activities	$	111,331	$	28,385	$	238,909	$	60,449
Cash flows from investing activities
Purchases of property and equipment	(505)		(1,202)		(1,484)		(4,053)
Purchases of marketable securities	(556,457)		(861,827)		(1,061,303)		(997,512)
Maturities of marketable securities	552,532		343,404		1,017,594		596,059
Proceeds from sale of marketable securities	—		—		12,372		—
Other investing activities	2,354		(12)		3,243		(27)
Net cash provided by (used in) investing activities	$	(2,076)	$	(519,637)	$	(29,578)	$	(405,533)
Cash flows from financing activities
Proceeds from issuance of Class A common stock in initial public offering, net of underwriting discounts and commissions	—		—		—		600,022
Proceeds from exercise of employee stock options	4,303		1,843		14,487		24,932
Taxes paid related to net share settlement of restricted stock units	(15,225)		(7,569)		(51,900)		(202,306)
Payments of initial public offering costs	—		(3,585)		—		(6,338)
Other financing activities	—		—		—		(4,450)
Net cash provided by (used in) financing activities	$	(10,922)	$	(9,311)	$	(37,413)	$	411,860
Net increase (decrease) in cash, cash equivalents, and restricted cash	98,333		(500,563)		171,918		66,776
Cash, cash equivalents, and restricted cash at the beginning of the period	635,727		968,565		562,142		401,226
Cash, cash equivalents, and restricted cash at the end of the period	$	734,060	$	468,002	$	734,060	$	468,002
Cash and cash equivalents	$	734,060	$	467,952	$	734,060	$	467,952
Restricted cash	—		50		—		50
Total cash, cash equivalents, and restricted cash	$	734,060	$	468,002	$	734,060	$	468,002
Supplemental disclosure of noncash financing and investing activities
Conversion of convertible preferred stock to common stock upon initial public offering	$	—	$	—	$	—	$	1,853,492
Reclassification of deferred offering costs to additional paid-in capital upon initial public offering	$	—	$	—	$	—	$	23,754

The accompanying notes are an integral part of these financial statements.

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Reddit, Inc.

Notes to the Consolidated Financial Statements

(unaudited)

1. Description of Business

Description of Business

Reddit, Inc. (“Reddit,” “we,” “our,” or “us”) was incorporated in the state of Delaware. Our mission is to empower communities and make their knowledge accessible to everyone. We built Reddit with the belief that communities unlock the power of human creativity and create a sense of belonging and empowerment for their members. We believe the world needs community more than ever, and that this represents our greatest opportunity to further enrich the lives of everyone in the world. We are headquartered in San Francisco, California, and have several offices around the world.

2. Basis of Presentation and Significant Accounting Policies

Basis of Presentation of Unaudited Interim Financial Information

Our consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) regarding interim financial information. Our consolidated financial statements include the accounts of Reddit, Inc. and our wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Certain information and disclosures normally included in the annual consolidated financial statements prepared in accordance with U.S. GAAP have been omitted. Accordingly, the unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2024, as filed with the SEC on February 13, 2025 (our “Annual Report”). The unaudited interim consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and reflect, in our opinion, all the adjustments of a normal, recurring nature that are necessary for the fair statement of our financial position, results of operations, and cash flows for the interim periods, but are not necessarily indicative of the results expected for the full year or any other period.

Other than as described below, there have been no changes to our significant accounting policies described in the “Notes to the Consolidated Financial Statements” included in our audited consolidated financial statements and related notes as of and for the year ended December 31, 2024 included in our Annual Report that have had a material impact on our consolidated financial statements and accompanying notes.

Use of Estimates

The preparation of the unaudited consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements and accompanying notes. Management’s estimates are based on historical information available as of the date of the consolidated financial statements and various other assumptions that we believe are reasonable under the circumstances. Actual results could differ materially from those estimates.

Significant estimates relate primarily to determining the fair value of stock-based awards, the fair value of assets and liabilities assumed in business combinations, and the incremental borrowing rate used to determine operating lease right-of-use assets and lease liabilities. On an ongoing basis, management evaluates our estimates compared to historical experience and trends, which form the basis for making judgments about the carrying value of assets and liabilities.

Functional Currency

Generally, the U.S. dollar is the functional currency for our subsidiaries, and therefore, foreign currency denominated monetary assets and liabilities are remeasured into U.S. dollars at exchange rates at the balance sheet date and foreign currency denominated non-monetary assets and liabilities are remeasured into U.S. dollars at historical exchange rates. Gains or losses from foreign currency remeasurement and settlements are included in other income (expense), net in the consolidated statements of operations. For those foreign subsidiaries where the local currency is the functional currency, we translate the financial statements to U.S. dollars at exchange rates at the balance sheet date for assets and liabilities and at monthly average exchange rates for revenues and expenses. Translation gains and losses are recorded in accumulated other comprehensive income (loss) as a component of stockholders’ equity (deficit). Net foreign exchange gains and losses were not material for the three and six months ended June 30, 2025 and 2024.

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Reddit, Inc.

Notes to the Consolidated Financial Statements

(unaudited)

Concentration of Credit Risk

Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash and cash equivalents, restricted cash, marketable securities, and accounts receivable. We maintain cash and cash equivalents with several financial institutions. We believe that the financial institutions that hold our cash and cash equivalents are financially sound and, accordingly, minimal credit risks exist with respect to these balances. We maintain investments in U.S. and non-U.S. government securities, investment-grade corporate and government agency securities, certificates of deposit, commercial paper, and money market accounts that carry high credit ratings and accordingly, minimal credit risk exists with respect to these balances.

Recently Adopted Accounting Pronouncements

In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which requires an entity to disclose specific categories in the effective tax rate reconciliation as well as provide additional information for reconciling items that meet a quantitative threshold. This standard also requires certain disaggregated disclosures related to income from continuing operations, income tax expense, and income taxes paid. We adopted this standard effective January 1, 2025. Adoption of this standard will result in additional disclosures in our annual consolidated financial statements, but did not impact these unaudited interim consolidated financial statements.

Accounting Pronouncements Not Yet Adopted

In November 2024, the FASB issued ASU No. 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires an entity to disclose disaggregated information about certain income statement expense line items. The standard is effective for us beginning January 1, 2027, with early adoption permitted. We are currently evaluating the impact the adoption will have on our disclosures.

3. Revenue

The following table represents our revenue disaggregated by source:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Advertising revenue	$	464,785	$	253,125	$	823,415	$	475,807
Other revenue	34,842		28,059		68,573		48,340
Total revenue	$	499,627	$	281,184	$	891,988	$	524,147

The following table represents our revenue disaggregated by geography based on the billing address of the customer:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
United States	$	408,842	$	228,069	$	722,694	$	427,872
Rest of world(1)	90,785		53,115		169,294		96,275
Total revenue	$	499,627	$	281,184	$	891,988	$	524,147

______________

(1)Other than the United States, no individual country represented 10% or more of total revenue during the three and six months ended June 30, 2025 and 2024.

Deferred revenue was $18.9 million and $14.9 million as of June 30, 2025 and December 31, 2024, respectively. For the six months ended June 30, 2025, revenue recognized from the deferred revenue balance at the beginning of the period was $14.0 million. For the six months ended June 30, 2024, revenue recognized from the deferred revenue balance at the beginning of the period was not material.

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Reddit, Inc.

Notes to the Consolidated Financial Statements

(unaudited)

As of June 30, 2025, the aggregate amount of remaining performance obligations in contracts with an original expected duration exceeding one year was $194.9 million. This amount consists primarily of long-term content licensing contracts and excludes deferred revenue related to short-term advertising contracts and Reddit Premium subscriptions. We expect to recognize $57.0 million in the remainder of 2025, $113.8 million in 2026, and $24.1 million in 2027.

4. Net Income (Loss) per Share

We compute net income (loss) per share of Class A and Class B common stock using the two-class method required for multiple classes of common stock and participating securities. Prior to our initial public offering (“IPO”) in March 2024, our participating securities included Series A, Series A-1, Series B, Series C, Series D, Series D-1, Series E, Series F, and Series F-1 convertible preferred stock, as the holders of these series of preferred stock were entitled to receive noncumulative dividends subject to certain requirements at an annual rate of 8% of the respective original issue price then in effect in the event that a dividend was paid on common stock.

In connection with our IPO, our Series A, Series A-1, Series B, Series C, Series D, Series D-1, Series E, and Series F preferred stock converted on a one-to-one basis into 67,917,432 shares of Class B common stock, and our Series F-1 preferred stock converted on a one-to-one basis into 5,104,017 shares of Class A common stock. For the three and six months ended June 30, 2024, these shares are weighted in the denominator of net income (loss) per share for Class A and Class B common stock for the portion of the time outstanding subsequent to our IPO.

The following table presents the calculation of basic and diluted net income (loss) per share attributable to common stock:

	Three months ended June 30,								Six months ended June 30,
	2025				2024				2025				2024
	Class A		Class B		Class A		Class B		Class A		Class B		Class A		Class B
	(in thousands, except share and per share data)
Basic net income (loss) per share attributable to common stockholders:
Numerator:
Net income (loss) attributable to common stockholders	$	62,806	$	26,491	$	(3,034)	$	(7,065)	$	80,803	$	34,652	$	(151,229)	$	(433,936)
Denominator:
Basic weighted-average common shares outstanding	130,426,589		55,011,188		49,386,912		114,995,824		128,586,761		55,144,231		30,317,800		86,993,814
Basic income (loss) per share attributable to common stockholders	$	0.48	$	0.48	$	(0.06)	$	(0.06)	$	0.63	$	0.63	$	(4.99)	$	(4.99)
Diluted net income (loss) per share attributable to common stockholders:
Numerator:
Net income (loss) attributable to common stockholders	$	64,676	$	24,621	$	(3,034)	$	(7,065)	$	83,730	$	31,725	$	(151,229)	$	(433,936)
Denominator:
Basic weighted-average common shares outstanding	130,426,589		55,011,188		49,386,912		114,995,824		128,586,761		55,144,231		30,317,800		86,993,814
Weighted-average effect of dilutive potential common stock	14,084,656		—		—		—		16,950,466		—		—		—
Shares used in computation of diluted net income (loss) per share attributable to common stockholders	144,511,245		55,011,188		49,386,912		114,995,824		145,537,227		55,144,231		30,317,800		86,993,814
Diluted net income (loss) per share attributable to common stockholders	$	0.45	$	0.45	$	(0.06)	$	(0.06)	$	0.58	$	0.58	$	(4.99)	$	(4.99)

The following outstanding potentially dilutive shares, including stock options that have been exercised prior to vesting, were excluded from the computation of diluted net income (loss) per share attributable to common stock for the periods presented because the impact of including them would have been anti-dilutive.

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Reddit, Inc.

Notes to the Consolidated Financial Statements

(unaudited)

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	Class A	Class B	Class A	Class B	Class A	Class B	Class A	Class B
Stock options	—	—	19,090,416	6,410,374	—	—	19,090,416	6,410,374
Unvested RSUs and RSAs	433,058	—	12,620,086	1,335,312	126,137	—	12,620,086	1,335,312
	433,058	—	31,710,502	7,745,686	126,137	—	31,710,502	7,745,686

5. Fair Value Measurements

Fair value is defined as the price that would be received to sell an asset in an orderly transaction between market participants at the measurement date. To increase the comparability of fair value measures, the following hierarchy prioritizes the inputs to valuation methodologies used to measure fair value:

•Level 1: Quoted market prices in active markets for identical assets or liabilities

•Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data

•Level 3: Unobservable inputs reflecting the reporting entity’s own assumptions or external inputs from inactive markets

We classify our cash equivalents and marketable securities within Level 1 or Level 2 because we use quoted market prices or alternative pricing sources and models utilizing market observable inputs to determine their fair value. There were no transfers between levels during the periods presented.

The following table sets forth our financial assets that are measured at fair value on a recurring basis:

		June 30, 2025
	Fair value hierarchy level	Cost or amortized cost		Gross unrealized gains		Gross unrealized losses		Fair value
		(in thousands)
Cash equivalents:
Money market funds	Level 1	$	621,940	$	—	$	—	$	621,940
U.S. treasury securities	Level 1	19,967		—		—		19,967
Certificates of deposit	Level 2	25,397		—		—		25,397
Marketable securities:
U.S. treasury securities	Level 1	665,971		899		(70)		666,800
U.S. agency bonds	Level 2	301,916		77		(207)		301,786
Corporate bonds	Level 2	239,906		586		(16)		240,476
Commercial paper	Level 2	116,831		6		(18)		116,819
Total		$	1,991,928	$	1,568	$	(311)	$	1,993,185

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Reddit, Inc.

Notes to the Consolidated Financial Statements

(unaudited)

		December 31, 2024
	Fair value hierarchy level	Cost or amortized cost		Gross unrealized gains		Gross unrealized losses		Fair value
		(in thousands)
Cash equivalents:
Money market funds	Level 1	$	497,461	$	—	$	—	$	497,461
U.S. treasury securities	Level 1	5,979		2		—		5,981
Corporate bonds	Level 2	1,066		2		—		1,068
Marketable securities:
U.S. treasury securities	Level 1	817,996		1,120		(396)		818,720
U.S. agency bonds	Level 2	117,965		15		(62)		117,918
Corporate bonds	Level 2	159,424		400		(86)		159,738
Commercial paper	Level 2	182,264		99		(22)		182,341
Total		$	1,782,155	$	1,638	$	(566)	$	1,783,227

Gross unrealized losses within accumulated other comprehensive income (loss) were immaterial as of June 30, 2025 and December 31, 2024. There were no impairment charges due to credit losses during the three and six months ended June 30, 2025 and 2024.

As of June 30, 2025, the amortized cost of marketable securities with maturities less than one year was $820.4 million. The amortized cost of marketable securities with maturities between one and five years was $504.3 million.

6. Balance Sheet Components

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following:

	June 30, 2025		December 31, 2024
	(in thousands)
Prepaid expenses	$	23,290	$	14,583
Other receivables	26,876		11,500
Interest receivable	9,089		4,695
Other	3,506		2,280
Total prepaid expenses and other current assets	$	62,761	$	33,058

Property and Equipment, Net

Property and equipment, net consisted of the following:

	June 30, 2025		December 31, 2024
	(in thousands)
Computer equipment, furniture, and fixtures	$	16,880	$	15,832
Leasehold improvements	8,051		8,017
Construction-in-progress	63		—
Total property and equipment	24,994		23,849
Less: accumulated depreciation	(13,600)		(11,197)
Total property and equipment, net	$	11,394	$	12,652

Depreciation expense was immaterial for the three and six months ended June 30, 2025 and 2024.

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Reddit, Inc.

Notes to the Consolidated Financial Statements

(unaudited)

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:

	June 30, 2025		December 31, 2024
	(in thousands)
Accrued compensation and benefits	$	56,042	$	63,441
Deferred revenue	18,826		14,805
Accrued expenses	49,108		31,817
Accrued revenue share payable and other	7,493		6,939
Other	8,848		7,462
Total accrued expenses and other current liabilities	$	140,317	$	124,464

Other Noncurrent Liabilities

Other noncurrent liabilities consisted of the following:

	June 30, 2025		December 31, 2024
	(in thousands)
Accrued customer incentives	$	15,632	$	9,100
Other	148		157
Total other noncurrent liabilities	$	15,780	$	9,257

7. Acquisitions

2024 Acquisition

On July 15, 2024, we completed an acquisition to enhance our technology and workforce. The aggregate purchase consideration was $19.9 million, which consisted of $17.1 million of cash consideration and $2.8 million related to the fair value of equity consideration. Additional consideration with a fair value of $10.7 million was determined to relate to post-combination expenses, primarily stock-based compensation for future employment services.

Of the aggregate purchase consideration, $4.3 million was allocated to developed technology with a useful life of three years, $15.9 million was allocated to goodwill, and the remainder was allocated to other assets acquired and liabilities assumed. The goodwill amount represents synergies from utilizing the acquired technology across our business and from the assembled workforce. Goodwill recorded in connection with the acquisition is not deductible for income tax purposes.

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Reddit, Inc.

Notes to the Consolidated Financial Statements

(unaudited)

8. Goodwill and Intangible Assets

Goodwill

The carrying amount of goodwill was $42.2 million as of December 31, 2024. There was no change in the carrying amount of goodwill during the six months ended June 30, 2025.

Acquired Intangible Assets

Acquired intangible assets consisted of the following:

	June 30, 2025
	Gross carrying value		Accumulated amortization		Net carrying value		Weighted-average remaining useful life (years)
	(in thousands, except year data)
Developed technology	$	47,460	$	27,007	$	20,453	2.1
Other intangible assets	600		600		—		—
Total acquired intangible assets	$	48,060	$	27,607	$	20,453

	December 31, 2024
	Gross carrying value		Accumulated amortization		Net carrying value		Weighted-average remaining useful life (years)
	(in thousands, except year data)
Developed technology	$	47,460	$	22,051	$	25,409	2.6
Other intangible assets	600		600		—		—
Total acquired intangible assets	$	48,060	$	22,651	$	25,409

Amortization expense was immaterial for the three and six months ended June 30, 2025 and 2024.

9. Debt

Revolving Line of Credit

On October 8, 2021, we entered into a five-year, $750.0 million, revolving loan and standby letter of credit facility agreement (“Revolving Credit Facility”) of which $100.0 million can be issued as letters of credit. As of June 30, 2025, we have issued two letters of credit, one of which is denominated in a foreign currency, for an aggregate of $5.2 million, which reduced the letter of credit borrowings available under the Revolving Credit Facility to $94.8 million. The aggregate available balance under the Revolving Credit Facility was $744.8 million as of June 30, 2025.

On May 23, 2023, we amended the terms of the Revolving Credit Facility to replace LIBOR with Term SOFR as the interest rate benchmark. Under the amended terms of the Revolving Credit Facility, borrowings can be either ABR Loans, Term Benchmark Loans, or SONIA Loans. Outstanding ABR Loans bear interest at a rate equal to the greatest of (A) the Prime Rate, (B) the NYFRB Rate plus 0.5%, (C) the Adjusted Term SOFR Rate plus 1.0%, or (D) 1.0% (each as defined in the amended Revolving Credit Facility), in each case plus 0.25%. Outstanding Term Benchmark Loans bear interest at the Adjusted Term SOFR Rate, the Adjusted EURIBOR Rate, or the Adjusted AUD Rate (each as defined in the amended Revolving Credit Facility), as applicable, in each case, plus 1.25%. Outstanding SONIA Loans bear interest at a rate equal to the Adjusted Daily Simple SONIA (as such term is defined in the amended Revolving Credit Facility) plus 1.25%. We are required to pay a quarterly commitment fee that accrues at 0.15% per annum on the unused portion of the aggregate commitments under the credit facility.

The Revolving Credit Facility contains customary conditions on our borrowings, including events of default and covenants. Covenants include restrictions on our and certain of our subsidiaries’ ability to incur indebtedness, grant liens, make distributions to holders of our preferred and common stock, make investments, or engage in transactions with our affiliates, and require us to maintain a minimum liquidity. The obligations under the Revolving Credit Facility are secured by liens on

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Reddit, Inc.

Notes to the Consolidated Financial Statements

(unaudited)

substantially all of our assets, including intellectual property assets. We were in compliance with all covenants as of June 30, 2025.

On July 1, 2025, we signed a renewal of the Revolving Credit Facility, which amended and restated certain terms of the agreement. Under the amended terms of the Revolving Credit Facility (“Amended Revolving Credit Facility”), we will have access to a five-year, $500.0 million, revolving loan and standby letter of credit facility, of which $100.0 million can be issued as letters of credit and another $100.0 million of which can be borrowed in certain non-U.S. dollar currencies. The Amended Revolving Credit Facility also includes some changes to other terms, primarily relating to interest rates and covenants, from the Revolving Credit Facility.

10. Commitments and Contingencies

Purchase Obligations

We enter into contracts with non-cancellable purchase obligations, primarily related to third-party cloud infrastructure agreements under which we are granted access to certain cloud services. During the six months ended June 30, 2025, there were no material changes outside the normal course of business to the purchase obligations as disclosed in the audited consolidated financial statements as of and for the year ended December 31, 2024 included in the Annual Report.

Legal Matters and Indemnifications

From time to time, we may become involved in various legal and regulatory proceedings, claims or purported class actions related to, among other things, alleged infringement of third party patents and other intellectual property rights, commercial, corporate and securities, labor and employment, wage and hour and other claims arising in the normal course of business. We record a loss contingency when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. We also disclose material contingencies when we believe a loss is not probable but reasonably possible.

In June 2025, we and certain of our officers and directors were named as defendants in a securities class action lawsuit in the U.S. District Court for the Northern District of California. The lawsuit is brought on behalf of a purported class of purchasers or acquirers of our securities, alleging that we and certain of our officers made false or misleading statements and omissions concerning the impact of Google Search and its AI Overviews feature on our business. The complaint seeks unspecified damages and attorneys’ fees. Subsequently, shareholder derivative complaints with similar allegations were filed in the U.S. District Court for the Northern District of California against the Company, its directors, and members of our senior management. No responses to these complaints have been filed. Based on the preliminary nature of the proceedings in these cases, the outcome of these matters remains uncertain.

Accounting for contingencies requires us to use judgment related to both the likelihood of a loss and the estimate of the amount or range of loss. We are not aware of any other pending matters, individually or in the aggregate, that are expected to have a material adverse impact on our results of operations, financial position, or cash flows as of June 30, 2025. Legal fees and other expenses associated with such matters are expensed as incurred.

11. Stockholders' Equity (Deficit)

Common Stock Reserved for Issuance

In February 2024, our board of directors adopted the 2024 Incentive Award Plan (the “2024 Plan”), which became effective in connection with the IPO. Under the 2024 Plan, shares of our Class A common stock are reserved for issuance pursuant to a variety of stock-based compensation awards, including stock options, stock appreciation rights, restricted stock awards, restricted stock units, performance bonus awards, performance stock unit awards, dividend equivalents, or other stock or cash based awards.

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Reddit, Inc.

Notes to the Consolidated Financial Statements

(unaudited)

We have reserved the following shares of common stock, on an as-converted basis, for future issuance:

	June 30, 2025	December 31, 2024
Outstanding stock options	11,865,483	14,687,538
Outstanding RSUs	7,615,351	11,175,380
Remaining shares reserved for future issuances under the 2024 Plan	45,350,994	36,711,788
Shares reserved for community impact initiatives and charitable activities	1,337,205	1,337,205
Total shares of common stock reserved	66,169,033	63,911,911

The remaining shares reserved for future issuance under the 2024 Plan relate to our Class A common stock.

12. Stock-Based Compensation

RSUs and RSAs

Our restricted stock units (“RSUs”) and restricted stock awards (“RSAs”) vest based on the terms in the grant agreements and generally vest ratably over one to four years from the vesting commencement date. The following table summarizes the RSU and RSA activity for the six months ended June 30, 2025:

	Total RSUs and RSAs	Weighted- average grant date fair value
Unvested as of December 31, 2024	11,344,247	$	37.67
Granted	1,149,225	$	115.73
Vested	(4,325,212)	$	44.54
Canceled/Forfeited	(436,148)	$	41.48
Unvested as of June 30, 2025	7,732,112	$	45.22

As of June 30, 2025, we had RSUs and RSAs outstanding for 7,732,112 common shares, of which 7,208,772 relate to Class A common stock and 523,340 relate to Class B common stock. Total unrecognized stock-based compensation expense related to RSUs and RSAs was $248.3 million as of June 30, 2025 and is expected to be recognized over a weighted-average period of 1.04 years.

Stock Options

Stock options vest based on terms in the stock option agreement and generally vest over five years quarterly or four years with 25% of the award vesting one year from the vesting commencement date then ratably over the following three years. The following table summarizes the stock option activity during the six months ended June 30, 2025:

	Outstanding stock options	Weighted- average exercise price		Weighted- average remaining contractual life (years)	Aggregate intrinsic value
	(in thousands, except share, per share, and year data)
Balance as of December 31, 2024	14,687,538	$	30.07	6.87	$	1,958,924
Exercised	(2,819,924)	5.14
Canceled/Forfeited	(2,131)	34.34
Balance as of June 30, 2025	11,865,483	$	35.99	7.36	$	1,359,543
Vested as of June 30, 2025	5,617,433	$	25.90	6.12	$	700,300
Vested and expected to vest as of June 30, 2025	11,865,483	$	35.99	7.36	$	1,359,543

As of June 30, 2025, we had outstanding stock options for 11,865,483 common shares, of which 10,136,166 relate to Class A common stock and 1,729,317 relate to Class B common stock. Total unrecognized stock-based compensation expense related

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Reddit, Inc.

Notes to the Consolidated Financial Statements

(unaudited)

to stock options was $97.4 million as of June 30, 2025 and is expected to be recognized over a weighted-average period of 3.48 years.

Stock-Based Compensation Expense

The following table summarizes the components of stock-based compensation expense recognized in the consolidated statements of operations for all periods presented:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
Cost of revenue	$	204	$	61	$	421	$	319
Research and development	56,663		29,944		109,273		346,458
Sales and marketing	10,198		6,875		20,336		67,665
General and administrative	22,005		27,386		44,454		227,332
Stock-based compensation expense	$	89,070	$	64,266	$	174,484	$	641,774

13. Income Taxes

Our provision for income taxes for interim periods is determined using an estimate of our annual effective tax rate, adjusted for discrete items, if any, that arise during the period. Each quarter, we update the estimate of the annual effective tax rate, and if the estimated annual effective tax rate changes, we make a cumulative adjustment in such period. For the three and six months ended June 30, 2025 and 2024, income tax expense (benefit) was immaterial. We continue to maintain a full valuation allowance on our remaining federal and state deferred tax assets.

On July 4, 2025, the One Big Beautiful Bill Act (“OBBBA”) was signed into law. The OBBBA includes changes to U.S. federal income tax law that will be applicable to us beginning in the period of enactment, including provisions allowing accelerated tax deductions for domestic research and development expenditures. We are currently analyzing the impact that the OBBBA will have on our consolidated financial statements.

14. Related Parties and Related-Party Transactions

Advance Magazine Publishers Inc.

As of June 30, 2025, Advance Magazine Publishers Inc. (“Advance”) held approximately 23% of our outstanding shares of Class A and Class B common stock and is a related party to Reddit as Advance holds more than 10% of the voting power of our outstanding Class A and Class B common stock. There have been no changes to the terms of the agreements that govern Advance’s rights as disclosed in the audited consolidated financial statements as of and for the year ended December 31, 2024 included in our Annual Report.

We currently sublease office space in New York and Chicago from Advance. Total lease costs and other related expenses for our subleases were immaterial for the three and six months ended June 30, 2025 and 2024.

15. Segment and Geographic Information

Segment Information

We have one reportable segment as our chief operating decision maker, our Chief Executive Officer, reviews consolidated profitability measures in managing the business. Specifically, our chief operating decision maker uses consolidated net income

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Reddit, Inc.

Notes to the Consolidated Financial Statements

(unaudited)

(loss) as the measure of segment profit or loss for evaluating performance and allocating resources through comparison of actual amounts against budgeted and prior period amounts in order to make strategic decisions.

The following table presents the calculation of segment net income (loss):

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Revenue	$	499,627	$	281,184	$	891,988	$	524,147
Adjusted cost of revenue(1)	45,696		29,440		82,568		56,798
Adjusted gross profit	453,931		251,744		809,420		467,349
Adjusted operating expenses(2)	287,182		212,241		527,400		417,821
Stock-based compensation and related taxes	95,104		66,772		202,509		662,309
Depreciation and amortization	3,934		3,770		7,897		7,513
Interest (income) expense, net	(21,056)		(20,941)		(41,470)		(36,388)
Income tax expense (benefit)	(439)		(216)		(2,160)		149
Other segment expenses(3)	(91)		217		(211)		1,110
Segment net income (loss)	$	89,297	$	(10,099)	$	115,455	$	(585,165)
Consolidated net income (loss)	$	89,297	$	(10,099)	$	115,455	$	(585,165)

________________

(1)Adjusted cost of revenue is cost of revenue adjusted for stock-based compensation and related taxes as follows:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Cost of revenue	$	45,900	$	29,501	$	82,989	$	57,117
Less:
Stock-based compensation and related taxes	204		61		421		319
Adjusted cost of revenue	$	45,696	$	29,440	$	82,568	$	56,798

(2)Adjusted operating expenses is operating expenses (comprised of research and development, sales and marketing, and general and administrative expenses) adjusted for stock-based compensation and related taxes and depreciation and amortization as follows:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Operating expenses	$	386,016	$	282,722	$	737,385	$	1,087,324
Less:
Stock-based compensation and related taxes	94,900		66,711		202,088		661,990
Depreciation and amortization	3,934		3,770		7,897		7,513
Adjusted operating expenses	$	287,182	$	212,241	$	527,400	$	417,821

(3)Other segment expenses primarily includes realized gains and losses on sales of marketable securities and foreign currency transaction gains and losses.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our unaudited consolidated financial statements and related notes included elsewhere in this Quarterly Report on Form 10-Q and our audited consolidated financial statements and the related notes and the discussion under the heading “Management’s Discussion and Analysis of Financial Condition and Results of Operations” for the year ended December 31, 2024 included in our Annual Report on Form 10-K (the “Annual Report”). In addition to historical consolidated financial information, the following discussion contains forward-looking statements that reflect our plans, estimates, and beliefs that involve significant risks and uncertainties. Our actual results could differ materially from those discussed in the forward-looking statements. Factors that could cause or contribute to those differences include those discussed below and elsewhere in this Quarterly Report on Form 10-Q, particularly in “Risk Factors” and “Note Regarding Forward-Looking Statements.”

Overview of Second Quarter 2025 Results

User Metrics

•Daily Active Uniques (“DAUq”) were 110.4 million for the three months ended June 30, 2025, an increase of 21% year over year

•Average revenue per unique (“ARPU”) was $4.53 for the three months ended June 30, 2025, an increase of 47% year over year

Financial Results

•Revenue was $499.6 million for the three months ended June 30, 2025, an increase of 78% year over year

•Gross margin was 90.8% for the three months ended June 30, 2025, as compared to 89.5% in the three months ended June 30, 2024

•Operating expenses were $386.0 million for the three months ended June 30, 2025 as compared to $282.7 million in the three months ended June 30, 2024

•Net income (loss) was $89.3 million for the three months ended June 30, 2025, as compared to $(10.1) million in the three months ended June 30, 2024

•Adjusted EBITDA was $166.7 million for the three months ended June 30, 2025, as compared to $39.5 million in the three months ended June 30, 2024

•Net cash provided by operating activities was $111.3 million for the three months ended June 30, 2025, as compared to $28.4 million in the three months ended June 30, 2024

•Free Cash Flow was $110.8 million for the three months ended June 30, 2025, as compared to $27.2 million in the three months ended June 30, 2024

•Cash, cash equivalents, and marketable securities were $2.1 billion as of June 30, 2025

Key Financial and Operating Metrics

We review a number of metrics, including the key metrics discussed below, to evaluate our business, measure our performance, identify trends affecting our business, formulate business plans, and make strategic decisions.

Trends in User Metrics

Daily Active Unique. We define a daily active unique (“DAUq”) as a user whom we can identify with a unique identifier who has visited a page on the Reddit website, www.reddit.com, or opened a Reddit application at least once during a 24-hour period. We calculate average DAUq for a particular period by adding the number of DAUq on each day of that period and dividing that sum by the number of days in that period. DAUq is shown globally and also broken out by the United States and the rest of the world because these markets have different characteristics. Most notably, we are more advanced in engagement and monetization in the United States than in the rest of the world. We measure DAUq because we believe that this metric helps management and investors understand usage of and engagement with our platform. DAUq is the primary metric by which we measure the scale of our active user base.

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DAUq includes visits from those who have logged in to a registered account as well as those who have not logged in to—or do not have—a registered account. Visitors that come to Reddit from search engines are generally not logged in and originate from both desktop and mobile web. Currently, monetization of these users is mainly through conversation pages and feed ads. Measuring the number of logged-out visitors is difficult and complex. For example, prior to the first quarter of 2023, a portion of our historical DAUq metric counted views of pages that were hosted using Google’s Accelerated Mobile Page (“AMP”) framework. The accuracy of counting the DAUq attributable to this AMP traffic relied on the accuracy and completeness of information received from Google, which had not been historically complete and consistent. As such, our historical DAUq metrics are not directly comparable quarter over quarter or year over year. To the extent that our metric includes views of pages hosted on third-party infrastructure, like Google’s AMP framework, the accuracy and comparability of our metrics will depend on the accuracy and consistency of the information received from any such third party.

In addition, we monitor logged-in DAUq, which we define as a user whom we can identify with a unique identifier who has visited a page on the Reddit website, www.reddit.com, or opened a Reddit application at least once during a 24-hour period and was logged in to a registered account. We measure logged-in DAUq because these users tend to have higher engagement and spend more time on our platform compared to users who are not logged in to a registered account.

Quarterly Average DAUq

(in millions)

Total DAUq YoY Growth:	15%	27%	37%	51%	47%	39%	31%	21%
Logged-in DAUq YoY Growth:	19%	21%	27%	31%	27%	27%	23%	17%

Total DAUq YoY Growth:	19%	34%	45%	59%	51%	32%	21%	11%	Total DAUq YoY Growth:	12%	21%	30%	44%	44%	46%	41%	32%
Logged-in DAUq YoY Growth:	16%	20%	27%	32%	29%	24%	19%	12%	Logged-in DAUq YoY Growth:	22%	21%	28%	30%	26%	29%	27%	22%

We assess both year over year and quarter over quarter growth of DAUq in each period.

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In the three months ended June 30, 2025, global DAUq grew 21% compared to the prior year period, driven by 11% growth in DAUq in the United States and 32% growth in DAUq in the rest of world. Global DAUq grew 2% compared to the prior quarter period, driven primarily by 4% growth in DAUq in the rest of world. The growth in global DAUq in the three months ended June 30, 2025 compared to the prior year period was primarily driven by traction in our growth strategies, particularly product initiatives such as machine translation and marketing, and to a lesser extent, by third-party search engine and algorithm changes. The growth in global DAUq in the three months ended June 30, 2025 compared to the prior quarter period was driven by traction in our growth strategies, particularly product initiatives such as machine translation and marketing, partially offset by third-party search engine and algorithm changes.

Year over year and quarter over quarter activity can also fluctuate due to various internal and external factors. During the three months ended December 31, 2023 and 2022, we deployed further advances in our process used to identify and address activity by users and visitors, including web crawlers and scrapers. As we identify automated agents, we remove them from our DAUq count prospectively and do not recalculate DAUq for prior periods if we assess such impact to be immaterial. As we have continued to improve our capabilities to identify suspicious traffic, we have not seen this methodology materially impact trends in DAUq from quarter to quarter.

Weekly Active Unique. We define a weekly active unique (“WAUq”) as a user whom we can identify with a unique identifier who has visited a page on the Reddit website, www.reddit.com, or opened a Reddit application at least once during a trailing seven-day period. We calculate average quarterly WAUq for a particular period by adding the number of WAUq on each day of that period and dividing that sum by the number of days in that period. We measure WAUq because we believe that this metric helps management and investors understand the reach of our platform.

During the three months ended December 31, 2023 and 2022, we deployed further advances in our process used to identify and address activity by users and visitors, including web crawlers and scrapers. As we identify automated agents, we remove them from our WAUq count prospectively and do not recalculate WAUq for prior periods if we assess such impact to be immaterial. As we have continued to improve our capabilities to identify suspicious traffic, we have not seen this methodology materially impact trends in WAUq from quarter to quarter.

Quarterly Average WAUq

(in millions)

WAUq YoY Growth:	15%	29%	40%	57%	53%	42%	31%	22%
DAUq/WAUq:	28%	27%	27%	27%	27%	27%	27%	27%

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WAUq YoY Growth: 21% 39% 53% 68% 58% 31% 18% 8% WAUq YoY Growth: 9% 20% 30% 48% 48% 52% 44% 35%

In the three months ended June 30, 2025, global WAUq grew 22% compared to the prior year period, driven by 8% growth in WAUq in the United States and 35% growth in WAUq in the rest of world. In the three months ended June 30, 2025, global WAUq increased 4% compared to the prior quarter period, driven by 2% growth in WAUq in the United States and 6% growth in WAUq in the rest of world. For the three months ended June 30, 2025, the proportion of DAUq to WAUq was 27%.

Trends in Monetization Metrics

We monetize our business primarily through advertising on our mobile applications and website. In the six months ended June 30, 2025, we recorded revenue of $892.0 million, as compared to revenue of $524.1 million for the six months ended June 30, 2024, representing an increase of 70% compared to the prior year period.

ARPU. We define average revenue per unique (“ARPU”) as quarterly revenue in a given geography divided by the average DAUq in that geography. For the purposes of calculating ARPU, advertising revenue in a given geography is based on the geographic location in which advertising impressions are delivered, as this approximates revenue based on user activity, while other revenue in a given geography is based on the billing address of the customer. This differs from the presentation of our revenue by geography in the notes to our consolidated financial statements included elsewhere in the Quarterly Report on Form 10-Q, where both advertising revenue and other revenue are based on the billing address of the customer.

We present ARPU globally and also broken out on a United States and rest of world basis because we currently monetize users in the United States and the rest of the world at different rates. We measure ARPU because we believe that this metric helps our management and investors assess the extent to which we are monetizing our DAUq. Monetization of new users is generally at a lower rate than existing users and as such, ARPU tends to grow at a lower rate than revenue in periods of strong DAUq growth. Additionally, logged-out users typically have lower engagement and spend less time on our platform compared to users who are logged in to a registered account, and therefore, logged-in users generally contribute significantly more to ARPU than logged-out users due to the lower monetization opportunity of logged-out users. Our ARPU reflects the seasonality of our advertising revenue, with the fourth quarter typically being the strongest quarter of each year, especially in the United States, our most developed geography. United States ARPU is higher primarily due to the relative size and maturity of the U.S. digital advertising market, a dynamic we expect will continue for the foreseeable future.

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Quarterly ARPU

(in dollars)

YoY Growth:	5%	(2)%	8%	2%	14%	23%	23%	47%
QoQ Growth:	4%	9%	(14)%	5%	16%	18%	(14)%	25%

YoY Growth:	—%	(7)%	3%	(5)%	12%	28%	31%	59%	YoY Growth:	16%	3%	10%	17%	16%	25%	22%	40%
QoQ Growth:	1%	5%	(13)%	4%	19%	20%	(11)%	26%	QoQ Growth:	8%	18%	(18)%	13%	6%	27%	(20)%	29%

During the three months ended June 30, 2025, ARPU was $4.53, an increase of 47% compared to $3.08 for the prior year period, United States ARPU was $7.87, compared to $4.94 for the prior year period, and rest of world ARPU was $1.73, compared to $1.24 for the prior year period. The increase in global ARPU compared to the prior year and prior quarter periods was due primarily to an increase in advertising revenue driven by an increase in impressions delivered, and to a lesser extent, an increase in pricing.

Non-GAAP Financial Measures

We use certain non-GAAP financial measures to supplement our consolidated financial statements, which are presented in accordance with U.S. GAAP, to evaluate our core operating performance. These non-GAAP financial measures include Adjusted EBITDA and Free Cash Flow. We use these non-GAAP financial measures to facilitate reviews of our operational performance and as a basis for strategic planning. By excluding certain items that are non-recurring or not reflective of the performance of our normal course of business, we believe that Adjusted EBITDA and Free Cash Flow provide meaningful supplemental information regarding our performance. Accordingly, we believe these non-GAAP financial measures are useful to investors and others because they allow investors to supplement their understanding of our financial trends and evaluate our ongoing and future performance in the same manner as management. However, there are a number of limitations related to the use of non-GAAP financial measures as they reflect the exercise of judgment by our management about which expenses are

26

included or excluded in determining these non-GAAP measures. These non-GAAP measures should be considered in addition to, not as a substitute for or in isolation from, our financial results prepared in accordance with U.S. GAAP. Other companies, including companies in our industry, may calculate these non-GAAP financial measures differently or not at all, which reduces their usefulness as comparative measures.

Adjusted EBITDA

Adjusted EBITDA is defined as net income (loss) excluding interest (income) expense, net, income tax expense (benefit), depreciation and amortization, stock-based compensation expense and related taxes, other (income) expense, net, and certain other non-recurring or non-cash items impacting net income (loss) that we do not consider indicative of our ongoing business performance. Other (income) expense, net consists primarily of realized gains and losses on sales of marketable securities, foreign currency transaction gains and losses, and other income and expense that are not indicative of our core operating performance. We consider the exclusion of certain non-recurring or non-cash items in calculating Adjusted EBITDA to provide a useful measure for investors and others to evaluate our operating results in the same manner as management.

The following table presents a reconciliation of our net income (loss), the most directly comparable financial measure presented in accordance with U.S. GAAP, to Adjusted EBITDA:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Reconciliation of Adjusted EBITDA:
Net income (loss)	$	89,297	$	(10,099)	$	115,455	$	(585,165)
Add (deduct):
Interest (income) expense, net	(21,056)		(20,941)		(41,470)		(36,388)
Income tax expense (benefit)	(439)		(216)		(2,160)		149
Depreciation and amortization(1)	3,934		3,770		7,897		7,513
Stock-based compensation expense and related taxes(2)	95,104		66,772		202,509		662,309
Other (income) expense, net	(91)		217		(211)		1,110
Adjusted EBITDA	$	166,749	$	39,503	$	282,020	$	49,528

________________

(1)Includes depreciation and amortization as follows:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Research and development	$	2,510	$	2,242	$	5,050	$	4,419
Sales and marketing	1,216		1,216		2,418		2,379
General and administrative	208		312		429		715
Depreciation and amortization	$	3,934	$	3,770	$	7,897	$	7,513

(2)Includes stock-based compensation expense and related taxes as follows:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Cost of revenue	$	204	$	61	$	421	$	319
Research and development	59,629		31,326		124,816		358,423
Sales and marketing	11,153		7,357		25,373		70,981
General and administrative	24,118		28,028		51,899		232,586
Stock-based compensation expense and related taxes	$	95,104	$	66,772	$	202,509	$	662,309

Free Cash Flow

Free Cash Flow represents net cash provided by (used in) operating activities less purchases of property and equipment. We believe that Free Cash Flow is useful to investors as a liquidity measure because it measures our ability to generate or use cash. Once our business needs and obligations are met, cash can be used to maintain a strong balance sheet and invest in future growth. Additionally, we believe that Free Cash Flow is an important measure since we use third-party infrastructure partners to host our services and therefore we do not incur significant capital expenditures to support revenue generating activities.

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The following table presents a reconciliation of net cash provided by (used in) operating activities, the most directly comparable financial measure calculated in accordance with U.S. GAAP, to Free Cash Flow:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Reconciliation of Free Cash Flow:
Net cash provided by (used in) operating activities	$	111,331	$	28,385	$	238,909	$	60,449
Less:
Purchases of property and equipment	(505)		(1,202)		(1,484)		(4,053)
Free Cash Flow	$	110,826	$	27,183	$	237,425	$	56,396

Results of Operations

The following table summarizes our historical consolidated statements of operations data for the periods indicated:

	Three months ended June 30,								Six months ended June 30,
	2025		2024		$ Change		% Change		2025		2024		$ Change		% Change
	(unaudited)
	(in thousands, except percentages)
Revenue	$	499,627	$	281,184	$	218,443	78	%	$	891,988	$	524,147	$	367,841	70	%
Net income (loss)	89,297		(10,099)		99,396		NM		115,455		(585,165)		700,620		NM
Adjusted EBITDA(1)	166,749		39,503		127,246		NM		282,020		49,528		232,492		NM

_________________

NM - Not meaningful

(1)See “Non-GAAP Financial Measures—Adjusted EBITDA” for more information and for a reconciliation of Adjusted EBITDA to net income (loss), the most directly comparable financial measure calculated and presented in accordance with U.S. GAAP.

Components of Results of Operations

Revenue

We generate a majority of our revenue through the sale of advertising on our mobile applications and website. We recognize revenue only after transferring control of promised goods or services to customers, which occurs when a user clicks on an ad contracted on a cost per click (“CPC”) basis, views an ad contracted on a cost per thousand impressions (“CPM”) basis, views a video ad contracted on a cost per view (“CPV”) basis, or on a fixed fee basis, based upon ad delivery over the service period, which is typically less than 30 days in duration.

We also generate revenue from content licensing, Reddit Premium subscriptions, and products within our user economy. In our content licensing arrangements, we provide customers with the right to access content from our platform over the contractual period. We recognize content licensing revenue as our content partners consume and benefit from their use of the licensed content, which is generally ratably over the license period. We recognize Reddit Premium subscription revenue ratably over the subscription period, which is generally less than one year. Products within our user economy include Reddit Gold and Collectible Avatars. Revenue from Reddit Gold and Collectible Avatars was immaterial for the periods presented.

Cost of Revenue

Cost of revenue consists primarily of payments to third parties for the cost of hosting and supporting our mobile applications and website. In addition, cost of revenue includes expenses directly associated with the delivery of our advertising and other services, including advertising measurement services and credit card and other transaction processing fees. Cost of revenue also consists of employee-related costs, including salaries, benefits, and stock-based compensation.

Research and Development Expenses

Research and development expenses consist primarily of employee-related costs including salaries, benefits, and stock-based compensation for engineers and other employees engaged in the research, design, and development of new and existing products. Research and development expenses also include professional services and hosting costs associated with internal research and development activities, as well as allocated facilities and other supporting overhead costs.

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Sales and Marketing Expenses

Sales and marketing expenses consist primarily of employee-related costs including salaries, benefits, and stock-based compensation for employees engaged in sales, sales support, business and brand development, marketing, and customer service functions. Sales commissions are expensed as incurred in sales and marketing expenses as the expected period of benefit is one year or less. Sales and marketing expenses also include costs incurred for advertising, market research, branding, professional services, marketing, and promotional expenditures, as well as allocated facilities and other supporting overhead costs.

General and Administrative Expenses

General and administrative expenses consist primarily of employee-related costs including salaries, benefits, and stock-based compensation for certain executives as well as employees engaged in finance, legal, human resources, information technology, communications, and other administrative teams. General and administrative expenses also include costs incurred for professional services, as well as allocated facilities and other supporting overhead costs.

Other Income (Expense), Net

Other income (expense), net, consists primarily of interest income, interest expense, realized gains and losses on sales of marketable securities, and foreign currency transaction gains and losses.

Income Tax Expense (Benefit)

We are subject to income taxes in the United States and foreign jurisdictions. Our income tax provision represents the income tax expense or benefit associated with our operations based on the tax laws of the jurisdictions in which we operate. The foreign jurisdictions where we operate have different statutory tax rates than the United States. Additionally, certain of our foreign earnings may also be taxable in the United States. Accordingly, our effective tax rates will vary depending on the relative proportion of foreign to domestic income, use of foreign tax credits, changes in the valuation of our deferred tax assets and liabilities, and changes in tax laws.

We have a full valuation allowance against our United States deferred tax assets and will continue to maintain it until there is sufficient evidence to support the future utilization of these assets. Given our recent history of generating net income in the U.S., we believe that there is a reasonable possibility that sufficient positive evidence may become available in a future period to allow us to release a significant portion of the U.S. valuation allowance. The reversal would result in a significant income tax benefit in the period when we release it. However, the exact timing and amount of the valuation allowance release are subject to change based on our actual operating results.

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Discussion of Results of Operations

The following table sets forth our consolidated statements of operations data for the periods indicated:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(unaudited)
	(in thousands)
Consolidated Statements of Operations Data:
Revenue	$	499,627	$	281,184	$	891,988	$	524,147
Costs and expenses:
Cost of revenue	45,900		29,501		82,989		57,117
Research and development	196,610		142,777		387,881		579,807
Sales and marketing	120,619		71,458		211,304		195,553
General and administrative	68,787		68,487		138,200		311,964
Total costs and expenses	431,916		312,223		820,374		1,144,441
Income (loss) from operations	67,711		(31,039)		71,614		(620,294)
Other income (expense), net	21,147		20,724		41,681		35,278
Income (loss) before income taxes	88,858		(10,315)		113,295		(585,016)
Income tax expense (benefit)	(439)		(216)		(2,160)		149
Net income (loss)	$	89,297	$	(10,099)	$	115,455	$	(585,165)
Adjusted EBITDA(1)	$	166,749	$	39,503	$	282,020	$	49,528
Net cash provided by (used in) operating activities	$	111,331	$	28,385	$	238,909	$	60,449
Free Cash Flow(2)	$	110,826	$	27,183	$	237,425	$	56,396

_________________

(1)See “Non-GAAP Financial Measures—Adjusted EBITDA” for more information and for a reconciliation of Adjusted EBITDA to net income (loss), the most directly comparable financial measure calculated and presented in accordance with U.S. GAAP.

(2)See “Non-GAAP Financial Measures—Free Cash Flow” for more information and for a reconciliation of Free Cash Flow to net cash provided by (used in) operating activities, the most directly comparable financial measure calculated and presented in accordance with U.S. GAAP.

The following table sets forth our consolidated statements of operations data expressed as a percentage of revenue for the periods indicated:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(unaudited)
Consolidated Statements of Operations Data:
Revenue	100	%	100	%	100	%	100	%
Costs and expenses:
Cost of revenue	9		10		9		11
Research and development	39		51		43		111
Sales and marketing	24		25		24		37
General and administrative	14		24		15		60
Total costs and expenses	86		110		91		219
Income (loss) from operations	14		(10)		9		(119)
Other income (expense), net	4		7		5		7
Income (loss) before income taxes	18		(3)		14		(112)
Income tax expense (benefit)	0		0		0		0
Net income (loss)	18	%	(3)	%	14	%	(112)	%

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Three and six months ended June 30, 2025 and 2024

Revenue

	Three months ended June 30,								Six months ended June 30,
	2025		2024		$ Change		% Change		2025		2024		$ Change		% Change
	(unaudited)
	(in thousands, except percentages)
Revenue	$	499,627	$	281,184	$	218,443	78	%	$	891,988	$	524,147	$	367,841	70	%

Revenue for the three and six months ended June 30, 2025 increased by $218.4 million and $367.8 million, or 78% and 70%, respectively, compared to the prior year periods. The growth in revenue was due primarily to an increase in advertising revenue driven by an increase in impressions delivered and to a lesser extent, an increase in pricing. In addition, other revenues increased as a result of content licensing agreements executed in 2024.

Cost of Revenue

	Three months ended June 30,								Six months ended June 30,
	2025		2024		$ Change		% Change		2025		2024		$ Change		% Change
	(unaudited)
	(in thousands, except percentages)
Cost of revenue	$	45,900	$	29,501	$	16,399	56	%	$	82,989	$	57,117	$	25,872	45	%

Cost of revenue for the three and six months ended June 30, 2025 increased by $16.4 million and $25.9 million, or 56% and 45%, respectively, compared to the prior year periods. The increase in cost of revenue was primarily attributable to increased hosting usage to support user growth and product enhancements on our platform, as well as an increase in advertising measurement and other services, partially offset by lower hosting prices.

Research and Development Expenses

	Three months ended June 30,								Six months ended June 30,
	2025		2024		$ Change		% Change		2025		2024		$ Change		% Change
	(unaudited)
	(in thousands, except percentages)
Research and development	$	196,610	$	142,777	$	53,833	38	%	$	387,881	$	579,807	$	(191,926)	(33)	%

Research and development expenses for the three and six months ended June 30, 2025 increased by $53.8 million, or 38%, and decreased by $191.9 million, or 33%, compared to the prior year periods, respectively. The increase in the three months ended June 30, 2025 compared to the prior year period was driven primarily by an increase in stock-based compensation expense and an increase in other employee-related costs, driven in part by an increase in headcount. The decrease in the six months ended June 30, 2025 compared to the prior year period was driven primarily by the cumulative catch-up upon IPO of stock-based compensation expense and related taxes for RSUs with a liquidity event vesting condition recognized in the prior year period, partially offset by an increase in other employee-related costs in the current period.

Sales and Marketing Expenses

	Three months ended June 30,								Six months ended June 30,
	2025		2024		$ Change		% Change		2025		2024		$ Change		% Change
	(unaudited)
	(in thousands, except percentages)
Sales and marketing	$	120,619	$	71,458	$	49,161	69	%	$	211,304	$	195,553	$	15,751	8	%

Sales and marketing expenses for the three and six months ended June 30, 2025 increased by $49.2 million and $15.8 million, or 69% and 8%, respectively, compared to the prior year periods. The increase in the three months ended June 30, 2025 compared to the prior year period was driven primarily by an increase in employee-related costs, driven in part by an increase in headcount, and an increase in marketing expense. The increase in the six months ended June 30, 2025 compared to

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the prior year period was driven primarily by an increase in employee-related costs and an increase in marketing expense, partially offset by the cumulative catch-up upon IPO of stock-based compensation expense and related taxes for RSUs with a liquidity event vesting condition recognized in the prior year period.

General and Administrative Expenses

	Three months ended June 30,								Six months ended June 30,
	2025		2024		$ Change		% Change		2025		2024		$ Change		% Change
	(unaudited)
	(in thousands, except percentages)
General and administrative	$	68,787	$	68,487	$	300	—	%	$	138,200	$	311,964	$	(173,764)	(56)	%

General and administrative expenses decreased by $173.8 million, or 56%, for the six months ended June 30, 2025 compared to the prior year period. The decrease in the six months ended June 30, 2025 compared to the prior year period was driven primarily by the cumulative catch-up upon IPO of stock-based compensation expense and related taxes for RSUs with a liquidity event vesting condition recognized in the prior year period.

Other Income (Expense), Net

	Three months ended June 30,								Six months ended June 30,
	2025		2024		$ Change		% Change		2025		2024		$ Change		% Change
	(unaudited)
	(in thousands, except percentages)
Other income (expense), net	$	21,147	$	20,724	$	423	2	%	$	41,681	$	35,278	$	6,403	18	%

Other income (expense), net increased by $6.4 million, or 18%, for the six months ended June 30, 2025 compared to the prior year period. The increase compared to the prior year period was primarily due to higher interest earned on our cash and investments driven by a higher invested balance.

Income Tax Expense (Benefit)

	Three months ended June 30,								Six months ended June 30,
	2025		2024		$ Change		% Change		2025		2024		$ Change		% Change
	(unaudited)
	(in thousands, except percentages)
Income tax expense (benefit)	$	(439)	$	(216)	$	(223)	103	%	$	(2,160)	$	149	$	(2,309)	NM

_________________

NM - Not meaningful

Income tax expense (benefit) for the six months ended June 30, 2025 decreased by $2.3 million compared to the prior year period. The income tax benefit in the current year period was primarily attributable to an excess tax benefit from stock-based compensation in a foreign subsidiary.

Liquidity and Capital Resources

We have historically financed our operations primarily through net proceeds from the sale of convertible preferred stock and payments received from our customers. Additionally, in March 2024, we completed our IPO, which resulted in net proceeds of $600.0 million after deducting underwriting discounts and commissions of $31.6 million. We began generating net positive operating cash flows in 2024. Our primary uses of cash are employee-related costs and the cost of hosting our mobile applications and website.

As of June 30, 2025, we had $2.1 billion in cash, cash equivalents, and marketable securities. Our cash and cash equivalents consist of cash in bank accounts, money market accounts, certificates of deposit, and other highly liquid investments with original maturities of 90 days or less from the date of purchase. Marketable securities consist of U.S. government securities, investment-grade corporate and government agency securities, and commercial paper. As of June 30, 2025, approximately 2% of our cash, cash equivalents, and marketable securities was held outside of the United States.

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On October 8, 2021, we entered into a five-year, $750.0 million, revolving loan and standby letter of credit facility agreement (“Revolving Credit Facility”) of which $100.0 million can be issued as letters of credit. As of June 30, 2025, we have issued two letters of credit, one of which is denominated in a foreign currency, for an aggregate of $5.2 million, which reduced the letter of credit borrowings available under the Revolving Credit Facility to $94.8 million. The aggregate available balance under the Revolving Credit Facility was $744.8 million as of June 30, 2025.

On May 23, 2023, we amended the terms of the Revolving Credit Facility to replace LIBOR with Term SOFR as the interest rate benchmark. Under the amended terms of the Revolving Credit Facility, borrowings can be either ABR Loans, Term Benchmark Loans, or SONIA Loans. Outstanding ABR Loans bear interest at a rate equal to the greatest of (A) the Prime Rate, (B) the NYFRB Rate plus 0.5%, (C) the Adjusted Term SOFR Rate plus 1.0%, or (D) 1.0% (each as defined in the amended Revolving Credit Facility), in each case plus 0.25%. Outstanding Term Benchmark Loans bear interest at the Adjusted Term SOFR Rate, the Adjusted EURIBOR Rate, or the Adjusted AUD Rate (each as defined in the amended Revolving Credit Facility), as applicable, in each case, plus 1.25%. Outstanding SONIA Loans bear interest at a rate equal to the Adjusted Daily Simple SONIA (as such term is defined in the amended Revolving Credit Facility) plus 1.25%. We are required to pay a quarterly commitment fee that accrues at 0.15% per annum on the unused portion of the aggregate commitments under the credit facility.

The Revolving Credit Facility contains customary conditions on our borrowings, including events of default and covenants. Covenants include restrictions on our and certain of our subsidiaries’ ability to incur indebtedness, grant liens, make distributions to holders of our preferred and common stock, make investments, or engage in transactions with our affiliates, and require us to maintain a minimum liquidity. The obligations under the Revolving Credit Facility are secured by liens on substantially all of our assets, including intellectual property assets. We were in compliance with all covenants as of June 30, 2025.

On July 1, 2025, we signed a renewal of the Revolving Credit Facility, which amended and restated certain terms of the agreement. Under the amended terms of the Revolving Credit Facility (“Amended Revolving Credit Facility”), we will have access to a five-year, $500.0 million, revolving loan and standby letter of credit facility, of which $100.0 million can be issued as letters of credit and another $100.0 million of which can be borrowed in certain non-U.S. dollar currencies. The Amended Revolving Credit Facility also includes some changes to other terms, primarily relating to interest rates and covenants, from the Revolving Credit Facility.

We believe our cash flows from operations, existing cash, cash equivalents, and marketable securities, and amounts available under our Amended Revolving Credit Facility will be sufficient to meet our working capital and capital expenditure needs for at least the next 12 months and for the foreseeable future. We continuously evaluate our liquidity and capital resources, including our access to external capital, to ensure we can finance our future capital needs.

The following table summarizes our cash flows for the periods presented:

	Six months ended June 30,
	2025		2024
	(unaudited)
	(in thousands)
Net cash provided by (used in) operating activities	$	238,909	$	60,449
Net cash provided by (used in) investing activities	(29,578)		(405,533)
Net cash provided by (used in) financing activities	(37,413)		411,860
Net increase (decrease) in cash, cash equivalents, and restricted cash	$	171,918	$	66,776
Free Cash Flow(1)	$	237,425	$	56,396

_________________

(1)See “Non-GAAP Financial Measures—Free Cash Flow” for more information and for a reconciliation of Free Cash Flow to net cash provided by (used in) operating activities, the most directly comparable financial measure calculated and presented in accordance with U.S. GAAP.

Operating Activities

Net cash provided by operating activities was $238.9 million in the six months ended June 30, 2025, resulting primarily from net income of $115.5 million in the six months ended June 30, 2025, adjustments for non-cash items, primarily related to stock-based compensation expense of $174.5 million, and an increase in accounts payable and accrued expenses and other current liabilities of $41.2 million due to the timing of payments. These amounts were partially offset by an increase in accounts receivable of $57.8 million due to the timing of cash collections and an increase in prepaid expenses and other assets of

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$26.4 million. Net cash provided by operating activities was $60.4 million in the six months ended June 30, 2024, resulting primarily from adjustments for non-cash items, primarily related to stock-based compensation expense of $641.8 million, and an increase in accounts payable and accrued expenses and other current liabilities of $28.9 million due to the timing of payments. These increases were partially offset by net loss of $(585.2) million in the six months ended June 30, 2024 and an increase in prepaid expenses and other assets of $20.2 million.

Investing Activities

Net cash used in investing activities was $(29.6) million in the six months ended June 30, 2025, primarily due to additional purchases of marketable securities of $1.1 billion, partially offset by maturities and proceeds from the sale of marketable securities of $1.0 billion. Net cash used in investing activities was $(405.5) million in the six months ended June 30, 2024, primarily due to additional purchases of marketable securities of $997.5 million, partially offset by maturities of marketable securities of $596.1 million.

Financing Activities

Net cash used in financing activities was $(37.4) million in the six months ended June 30, 2025 and consisted primarily of cash payments for taxes related to net share settlement of restricted stock units of $51.9 million, partially offset by proceeds from exercises of employee stock options of $14.5 million. Net cash provided by financing activities was $411.9 million in the six months ended June 30, 2024 and consisted primarily of cash proceeds from issuance of Class A common stock in our initial public offering, net of underwriting discounts and commissions, of $600.0 million and proceeds from exercises of employee stock options of $24.9 million, partially offset by cash payments for taxes related to net share settlement of restricted stock units of $202.3 million.

Free Cash Flow

Free Cash Flow was $237.4 million for the six months ended June 30, 2025, and was composed of net cash provided by operating activities, resulting primarily from net income and adjustments for non-cash items and changes in working capital. Free Cash Flow was $56.4 million for the six months ended June 30, 2024, and was composed of net cash provided by operating activities, resulting primarily from adjustments for non-cash items and changes in working capital, partially offset by net loss. Free Cash Flow also included purchases of property and equipment of $1.5 million and $4.1 million for the six months ended June 30, 2025 and 2024, respectively. For the six months ended June 30, 2025, the increase in Free Cash Flow as compared to the prior year period was driven primarily by the increase in net income.

Off-Balance Sheet Arrangements

During the periods presented, we did not have, and we do not currently have, any off-balance sheet financing arrangements or any relationships with unconsolidated entities or financial partnerships, including entities sometimes referred to as structured finance or special purpose entities, that were established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes.

Contractual Obligations and Commitments

We have non-cancellable contractual obligations and commitments primarily related to third-party cloud infrastructure agreements under which we are granted access to certain cloud services as well as operating lease agreements. During the six months ended June 30, 2025, there were no material changes outside the normal course of business to the purchase obligations as disclosed in the audited consolidated financial statements as of and for the year ended December 31, 2024 included in the Annual Report.

Critical Accounting Policies and Estimates

We prepare our consolidated financial statements in accordance with U.S. GAAP. Preparing these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, expenses, and related disclosures. We evaluate our estimates and assumptions on an ongoing basis. Our estimates are based on historical experience and various other assumptions that we believe to be reasonable under the circumstances. Our actual results could differ significantly from these estimates. To the extent that there are differences between our estimates and actual results, our future financial statement presentation, results of operations, financial condition, and cash flows will be affected.

There have been no material changes to our critical accounting policies and estimates as described in our Annual Report.

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Recent Accounting Pronouncements

See Note 2—Basis of Presentation and Significant Accounting Policies of the notes to our consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q for any recently adopted accounting pronouncements and recently issued accounting pronouncements not yet adopted.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

We are exposed to market risks in the ordinary course of our business. These risks primarily include interest rate risk and foreign currency risk as follows:

Interest Rate Risk

We had cash and cash equivalents of $734.1 million and $562.1 million as of June 30, 2025 and December 31, 2024, respectively. We had marketable securities of $1.3 billion as of June 30, 2025 and December 31, 2024. Our cash and cash equivalents consist of cash in bank accounts, money market accounts, certificates of deposit, and other highly liquid investments with original maturities of 90 days or less from the date of purchase. Marketable securities consist of U.S. government securities, investment-grade corporate and government agency securities, and commercial paper. Our investment policy and strategy are focused on the preservation of capital and supporting our liquidity requirements. We do not enter into investments for trading or speculative purposes. Due to the relatively short-term nature of our investment portfolio, a hypothetical 100 basis point change in interest rates would not have a material effect on the fair value of our portfolio or our consolidated financial statements for the periods presented.

Foreign Currency Risk

For the three and six months ended June 30, 2025 and 2024, the majority of our revenue and operating expenses were denominated in U.S. dollars. We therefore have not had material foreign currency risk associated with sales and cost-based activities. For the three and six months ended June 30, 2025 and 2024, our operations outside of the United States were not considered material and our results of operations and cash flows were minimally subject to fluctuations from changes in foreign currency rates. We believe the exposure to foreign currency fluctuation from operating expenses is immaterial at this time as the related costs do not constitute a significant portion of our total expenses. As we grow operations, our exposure to foreign currency risk will likely become more significant. A hypothetical 10% increase or decrease in the relative value of the U.S. dollar to other currencies would not have a material effect on our consolidated financial statements for the periods presented. For the three and six months ended June 30, 2025 and 2024, we did not enter into any foreign currency exchange contracts for purposes of hedging foreign exchange rate fluctuations on our business operations, although we may elect to do so in the future.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), as of the end of the period covered by this Quarterly Report on Form 10-Q. Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that these disclosure controls and procedures were effective at a reasonable assurance level as of June 30, 2025.

Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting identified in connection with the evaluation required by Rule 13a-15(d) and 15d-15(d) of the Exchange Act during the period covered by this Quarterly Report on Form 10-Q that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Limitations on Effectiveness of Controls and Procedures

Our management, including our Chief Executive Officer and Chief Financial Officer, believes that our disclosure controls and procedures and internal control over financial reporting are designed to provide reasonable assurance of achieving their objectives and are effective at the reasonable assurance level. However, the effectiveness of any internal control over financial reporting is subject to inherent limitations, including the exercise of judgment in designing, implementing, operating, and evaluating the controls and procedures, and the inability to eliminate misconduct completely. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, have been detected. The design of any system of controls is based in part on certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all

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potential future conditions. Over time, controls may become inadequate because of changes in conditions or deterioration in the degree of compliance with policies or procedures. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

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Part II - Other Information

Item 1. Legal Proceedings

This information is set forth under Note 10—Commitments and Contingencies—Legal Matters and Indemnifications to the consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q, which is incorporated herein by reference.

Item 1A. Risk Factors

A description of the risks and uncertainties associated with our business is set forth below. You should carefully consider the risks described below as well as the other information in this Quarterly Report on Form 10-Q, including our consolidated financial statements and the notes thereto, and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” The occurrence of any of the events or developments described below could adversely affect our business, results of operations, financial condition, reputation, and prospects. In such an event, the market price of our Class A common stock could decline, and you may lose all or part of your investment.

Risk Factor Summary

Our business is subject to numerous risks and uncertainties, including those described more fully below in this Quarterly Report on Form 10-Q. The following is a summary of principal risks and uncertainties that could materially adversely affect our business, results of operations, financial condition, and prospects. This summary should be read in conjunction with the “Risk Factors” section and should not be relied upon as an exhaustive summary of the material risks and uncertainties facing our business.

•If we fail to increase or retain our user base, and in particular, our DAUq, or if user engagement declines, our business, results of operations, financial condition, and prospects will be harmed.

•If Redditors do not continue to contribute content or their contributions are not valuable or appealing to other Redditors, we may experience a decline in the number of Redditors accessing our products and services and in user engagement, which could result in the loss of advertisers and may harm our reputation, business, results of operations, financial condition, and prospects.

•Our business depends on a strong brand and reputation, and if we are unable to maintain and enhance our brand and reputation, our ability to expand our user and advertiser bases will be impaired and our business, results of operations, financial condition, and prospects could be harmed.

•Changes in internet search engine algorithms and dynamics could have a negative impact on traffic for our website and, ultimately, our business, results of operations, financial condition, and prospects.

•We have a history of net losses and we may not be able to maintain profitability in the future.

•Our results of operations may fluctuate from quarter to quarter, which makes them difficult to predict.

•We are in the early stages of monetizing our business, and there is no assurance we will be able to scale our business for future growth.

•We generate a majority of our revenue from advertising. The failure to attract new advertisers, the loss of advertisers, or the reduction of or failure by advertisers to maintain or increase their advertising budgets would adversely affect our business.

•We may not succeed in further expanding and monetizing our platform internationally and may be subject to increased international business and economic risks.

•We are exploring business opportunities in content licensing, but we are in the early stages and the market is new and evolving rapidly.

•Our business, results of operations, financial condition, and prospects may be harmed by our failure to timely and effectively scale and adapt our existing technology and infrastructure.

•We anticipate that our ongoing efforts related to data privacy, safety, security, and content review will identify instances of misuse of user data or other undesirable activity by third parties on our platform.

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•If our security measures are breached, or if our products and services are subject to attacks involving our systems or data, some of which contain personal information, or that degrade or deny the ability of users to access our products and services, our products and services may be perceived as not being secure, Redditors and advertisers may curtail or stop using our products and services, and our reputation, business, results of operations, financial condition, and prospects could be harmed.

•Redditor growth and engagement depends upon effective interoperation with operating systems, networks, devices, web browsers, online application stores, regulations, and standards that we do not control. Changes in our products or to those operating systems, networks, devices, web browsers, online application stores, regulations, or standards may harm Redditor retention, growth, and engagement, which could harm our business, results of operations, financial condition, and prospects.

•Our business is subject to increasingly complex and evolving laws, rules, regulations, industry standards, and other legal obligations regarding content, consumer protection, competition, privacy, and other matters. Failure to comply with such laws, rules, regulations, industry standards, and other legal obligations could harm our business.

•Interest in our Class A common stock from retail and other individual investors, for reasons unrelated to our underlying business or macro or industry fundamentals, could result in increased volatility in the market price of our Class A common stock.

•The multi-class structure of our common stock has the effect of concentrating voting control with those stockholders who held our capital stock prior to the listing of our Class A common stock on the NYSE, including our directors, executive officers, and 5% stockholders, and their respective affiliates. This ownership will limit or preclude your ability to influence corporate matters, including the election of directors, amendments of our organizational documents, and any major corporate transaction requiring stockholder approval, including change of control transactions.

•Our amended and restated certificate of incorporation and the governance agreement we entered into with our principal stockholder grant our principal stockholder certain rights with respect to the control and management of our business, which may prevent us from taking actions that may be beneficial to us and our other stockholders.

Risks Related to Our Business

We face intense competition, and if we fail to grow or retain our user base or maintain user engagement, our business, results of operations, financial condition, and prospects could be adversely affected.

The size of our user base and their level of engagement are critical to our success. Our financial performance has been, and will continue to be, significantly determined by our success in growing our user base so that we add Redditors, and those Redditors become more active users—more specifically, daily active uniques (“DAUq”). We define a user whom we can identify with a unique identifier who has visited a page on the Reddit website, www.reddit.com, or opened a Reddit application at least once during a 24-hour period as a DAUq. DAUq is a user metric utilized by our management team. While it may be used to gauge usage of our platform, it may not correlate to revenue. We also measure weekly active uniques (“WAUq”) to help us understand the reach of our platform. We may not be successful in our strategies to convert monthly users or WAUq into more DAUq.

The absolute number of our DAUq and our DAUq growth rate has decreased in the past and may fluctuate or decrease in one or more markets from time to time due to various factors, especially after periods of high growth, such as we have experienced. For example, although we saw increased growth in our user base during the COVID-19 pandemic, we experienced lower levels of DAUq growth and declining DAUq as the effects of the COVID-19 pandemic subsided. DAUq has also declined in the past in periods following usage peaks surrounding certain worldwide events, such as the onset of the conflict between Russia and Ukraine in the three months ended March 31, 2022, and cultural trends, including video game releases, such as Elden Ring in the three months ended March 31, 2022, and traffic related to r/ wallstreetbets in the three months ended March 31, 2021. These usage peaks are driven by external factors that are outside of our control. Accordingly, such growth may not be repeatable and we may experience declines in DAUq in the future in similar circumstances. DAUq has also been volatile during community responses to domestic and international social unrest as well as in response to actions by us. For example, we saw increased growth in our user base in the three months ended December 31, 2023, which may have been driven in part by performance improvements in our product and possibly by migration of usage from certain third-party applications in response to changes in our application program interface (“API”) terms and policies. Such growth may not be sustainable. In the three months ended June 30, 2025, logged-out DAUq comprised 55% of global DAUq. Logged-out users typically come to Reddit via search engines, spend less time on the site, and do not monetize at the same rate as logged-in users. Furthermore, we anticipate that our DAUq growth rate will slow over time as the absolute number of our DAUq increases. To the extent our DAUq growth rate slows or becomes negative, our success will increasingly depend on our ability to increase levels of

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engagement and monetization on our platform, including the level at which users visiting us from search traffic become more frequent users of our platform.

A number of factors could harm Redditor growth and engagement or impact our ability to compete effectively, including if:

•Redditors engage with other products, services, or activities as an alternative to ours;

•our competitors incorporate features into their products that are substantially similar to ours or improve upon such features when including them in their products;

•we fail to introduce new and improved products or services or we introduce new or improved products or services that negatively affect Redditor engagement;

•we are unable to convert DAUq who come to our platform through internet search engines to sign-up and log in;

•Redditors feel that their Reddit experience is diminished as a result of our decisions with respect to the frequency, prominence, and size of ads that we display, or the quality of the ads displayed;

•influential Redditors or certain demographics of Redditors conclude that an alternative product or service better meets their needs;

•we are unable to convince new Redditors of the value and usefulness of our products and services;

•technical or other problems prevent us from delivering our products or services in a rapid and reliable manner or otherwise negatively affect Redditors’ experience with our platform;

•we fail to effectively adopt new technologies, such as machine learning and artificial intelligence (“AI”), that our competitors may have more experience utilizing and leveraging in their products and services;

•Redditors have difficulty installing, updating, searching, or otherwise accessing our products and content or prefer to utilize third-party applications that have shut down or no longer integrate with our platform;

•there are disruptions to the normal operation of our communities, including as a result of actions or inactions by our volunteer moderators;

•Redditors are unable to locate content, in their local language, that is interesting, useful, relevant, reliable, high-quality, or trustworthy to them, or otherwise find content available on our platform offensive, inappropriate, hostile, or otherwise objectionable;

•there are Redditor concerns related to privacy and communication, safety, security, or other factors or changes to our platform or policies that are not well received by Redditors;

•we are unable to combat harmful or inappropriate usage of our platform;

•there are adverse changes in our products or services that are mandated by, or that we elect to make to address, legislation, regulatory authorities, or litigation, including settlements;

•we fail to keep pace with evolving online, market, and industry trends; or

•we are the subject of adverse media reports or other negative publicity.

We also compete to attract and retain Redditors’ attention on the basis of our content and Redditor experiences with our platform and face significant competition for prospective users, both domestically and internationally. We compete against many companies that provide content and communications services to online users, including Google, Meta (including Facebook, Instagram, Threads, and WhatsApp), YouTube, Wikipedia, Snap, X, Pinterest, TikTok, Roblox, Discord, and Twitch, and which offer a variety of internet- and mobile device-based products, services, and content. Many of these companies have greater financial resources and substantially larger user bases than Reddit. Furthermore, as we pursue opportunities to empower our user economy, we expect to face competition from existing online marketplaces, including Patreon, Substack, and Squarespace. As a result, our competitors may draw users towards their products or services and away from ours. This could decrease the growth or engagement of Redditors, which, in turn, would negatively affect our business. In addition, we face competition from large language models (“LLMs”), such as those built by Google, Meta, OpenAI, and Anthropic; Redditors may choose to find information using LLMs, which in some cases may have been trained using Reddit content, instead of visiting Reddit directly.

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We believe that sustained meaningful active Redditor growth is dependent on improving our products and services to demonstrate our value proposition to a larger, global audience and penetrating additional demographics, which we believe may take a considerable amount of time. If we are unable to increase our DAUq, or its growth rate, or if this metric declines, our products and services could be less attractive to potential new users, as well as to advertisers, which would harm our business, results of operations, financial condition, and prospects.

If Redditors do not continue to contribute content or their contributions are not valuable or appealing to other Redditors, we may experience a decline in the number of Redditors accessing our products and services and in user engagement, which could result in the loss of advertisers and may harm our reputation, business, results of operations, financial condition, and prospects.

Our success depends on our ability to provide users of our products and services with valuable content, which in turn depends on the content contributed by Redditors. We seek to foster a broad and engaged Redditor community. If Redditors do not continue to contribute content and otherwise engage with our platform, and we are unable to provide Redditors with valuable and timely content, our user base and their engagement may decline. A large portion of the content on our platform comes from a small number of Redditors contributing to communities (which are also known as subreddits). If prolific Redditors do not continue to contribute content and otherwise engage with our platform, or decide to leave our platform and encourage other Redditors to follow them to a new platform, our user base and their engagement may decline. Our platform may also be used by third parties to disseminate abusive or other harmful content in violation of our terms and applicable law. We may not proactively discover or quickly respond to such content once alerted to it due to our scale and the limitations of existing technology and operational infrastructure. If we are unable to successfully prevent or detect and timely address abusive or other harmful behavior on our platform, our user base and their engagement may decline. Additionally, in keeping with our mission to empower communities and make their knowledge accessible to everyone, our site-wide content policy is designed to be protective, but not intrusive. If Redditors perceive the content available on Reddit to be offensive, inappropriate, hostile, or otherwise objectionable, we may experience a decline in user activity generally, or among certain demographics. We generate a majority of our revenue from the sale of advertising services. If we experience a decline in the number of Redditors, or a decrease in Redditor growth rate or engagement, including as a result of a lack of valuable or appealing content, or the loss of influential Redditors or subreddits, advertisers may not view our products and services as attractive for their marketing expenditures, and may reduce their spending with us, which would harm our reputation, business, results of operations, financial condition, and prospects.

Our business depends on a strong brand and reputation, and if we are unable to maintain and enhance our brand and reputation, our ability to expand our user and advertiser bases will be impaired and our business, results of operations, financial condition, and prospects could be harmed.

We believe that our brand identity and reputation, including that our service is an empowering environment, has significantly contributed to the success of our business. We also believe that maintaining and enhancing the “Reddit” brand and reputation is critical to retaining and growing our user and advertiser bases. We anticipate that maintaining and enhancing our brand and reputation will depend largely on our continued ability to provide high-quality, relevant, reliable, trustworthy, and innovative products, which may require substantial investment and may not be successful. We may need to introduce new products or updates to existing products that require Redditors to agree to new terms of service that Redditors do not like, which may negatively affect our brand and reputation. Additionally, advertisements or actions of our advertisers may affect our brand and reputation if Redditors do not think the advertisements help them accomplish their objectives, view the advertisements as intrusive, annoying, or misleading, or have poor experiences with our advertisers.

Our brand and reputation may also be negatively affected by the content or actions of Redditors that are deemed to be offensive, inappropriate, hostile, or otherwise objectionable to other Redditors, by the actions of Redditors acting under false or inauthentic pretenses, by the use of our products or services to disseminate information that is deemed to be misleading, or by the use of our service for illicit, illegal, or objectionable ends. We also may fail to respond expeditiously or at all to the sharing of illegal, illicit, offensive, inappropriate, hostile, or otherwise objectionable content on our platform or to objectionable practices by advertisers, or to otherwise address Redditors’ concerns, which could erode confidence in our brand and damage our reputation. We expect that our ability to identify and respond to such content in a timely manner may decrease as the number of Redditors grows, as the amount of content on our platform increases, or as we expand our product and service offerings, such as an increase in video content. Any governmental or regulatory inquiry, investigation, or action, including based on the appearance of illegal, illicit, or objectionable content on our platform or the failure to comply with applicable laws, rules, and regulations, could damage our brand and reputation, regardless of the outcome.

We receive a high degree of media coverage globally. We have experienced, and expect to continue to experience, media, legislative, governmental, and regulatory scrutiny of our decisions. Unfavorable publicity and scrutiny involving us, including regarding our data privacy, intellectual property, content, or other practices, product changes, product quality, pricing increases,

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litigation, or regulatory action, or regarding the actions of our employees, Redditors, moderators, or advertisers, or other issues, may significantly harm our brand and reputation, and could adversely affect the size, demographics, engagement, and loyalty of our user base. For instance, in May and June 2023, we experienced negative publicity as a result of our API policy changes. In addition, unfavorable publicity and scrutiny of other companies in our industry, including controversies surrounding their product design choices, content-related decisions, or their data privacy practices, could also have a negative impact on our brand and reputation. These concerns, whether actual or unfounded, may also deter Redditors or advertisers from using our service.

In addition, we may fail to adequately address the needs of Redditors or our advertisers, which could erode confidence in our brand and damage our reputation. If we fail to promote and maintain the “Reddit” brand or preserve our reputation, or if we incur excessive expenses in this effort, our business, results of operations, financial condition, and prospects could be harmed.

Changes in internet search engine algorithms and dynamics could have a negative impact on traffic for our website and, ultimately, our business, results of operations, financial condition, and prospects.

Our success depends partly on our ability to attract online visitors to our website. We rely, in part, on internet search engines, such as Google, to generate traffic to our website, primarily through free or organic searches. Search engines frequently update and change the logic that determines the placement and display of the results of a user’s search, such that the purchased or algorithmic placement of links to our websites may be ranked lower in the search results or otherwise less visible in a user’s search. In addition, a search engine could, for competitive or other purposes, alter its search algorithms, results or user experience, causing our website to place lower in organic search query results. If a major search engine changes its algorithms in a manner that negatively affects the search engine ranking of our website or those of our partners, our business, results of operations, financial condition, and prospects could be adversely affected.

We may not sustain our growth rate, and our results of operations may fluctuate from quarter to quarter, which makes them difficult to predict.

Although we had net income for the three months ended September 30, 2024 and every quarter since, we have previously incurred net losses since our inception, and we may incur net losses again in the future. We incurred net loss of $(484.3) million for the year ended December 31, 2024. As of June 30, 2025, we had an accumulated deficit of $(1.1) billion. We also expect our costs and expenses to increase in future periods, and if our revenue growth does not increase to more than offset these anticipated increases in our costs and expenses, our business, results of operations, financial condition, and prospects will be harmed, and we may not be able to maintain profitability. We expect our costs and expenses to increase in future periods as we intend to continue to make significant investments to broaden our user base, develop and implement new products, market new and existing products and promote our brand, expand our technical infrastructure, and hire additional employees (with a related expected increase in payroll and stock-based compensation expense). Some of these investments may generate only limited revenue and reduce our operating margin. If our investments are not successful, our ability to increase revenue may be adversely affected.

In addition, our quarterly results of operations have fluctuated in the past and will fluctuate in the future, based on the seasonality of our business as well as external factors impacting the global economy. For example, we have historically seen seasonality in our business and financial results, with an increase in overall advertiser spending in the fourth quarter, due in large part to end-of-year advertiser spending, typically followed by a weaker first quarter. Our results of operations and financial condition in any given quarter can be influenced by numerous factors, many of which we are unable to predict or are outside of our control, including:

•our ability to maintain and grow our DAUq, as well as users’ activity on Reddit;

•the level of demand for our products and services;

•the development and introduction or termination of new products, features, or services by us or our competitors;

•seasonal or other fluctuations in spending by our advertisers or in Redditor usage or engagement on our platform, including, but not limited to, around significant planned events such as the Super Bowl and unplanned ones like natural disasters;

•our ability to attract and retain advertisers;

•our pricing models and our ability to maintain or improve revenue and operating margins;

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•increases in marketing, sales, and other operating expenses that we may incur to grow and expand our operations and to remain competitive;

•our ability to successfully expand internationally and penetrate key demographics, including our international focus markets;

•fluctuations in currency exchange rates and changes in the proportion of our revenue and expenses denominated in foreign currencies;

•fluctuations in the market values of our portfolio investments and interest rates or impairments of any assets on our consolidated balance sheet;

•changes in our effective tax rate;

•changes in accounting standards or the application of existing or future accounting standards;

•system failures or actual or perceived data breaches or other security or privacy-related incidents, and the costs associated with such failures, breaches, and remediations;

•changes in governmental or other regulations affecting our business or adverse litigation judgments and related compliance costs, fines, or litigation- and dispute-related costs; and

•other risks described in this Quarterly Report on Form 10-Q.

As a result, our past quarterly results of operations are not necessarily indicative of future performance.

We are in the early stages of monetizing our business and expanding our platform internationally, and there is no assurance that we will be able to scale our business for future growth.

We are in the early stages of our monetization efforts, and as such, we are still scaling our advertising revenue model. Our growth strategy depends on, among other things, attracting more advertisers, scaling our business with existing advertisers, and expanding our advertising services, as well as successfully identifying and capturing non-advertising sources of revenue. There is no assurance that this revenue model will be successful or that we will generate increased revenue.

To sustain or increase our advertising revenue, we must attract new advertisers, encourage existing advertisers to maintain or increase their advertising spend on our platform, expand the number of markets where we offer advertising, and increase the breadth and functionality of our advertising services, including new advertising formats and measurement tools. In order to obtain new advertisers and further our relationship with current advertisers, we must increase the amount of monetizable content on our platform, including by increasing the absolute number of DAUq who post and consume content, and our monetization model depends on this engagement. Not all DAUq monetize in the same manner or rate, so we also measure the average revenue per unique (“ARPU”) to help us understand the extent to which we are monetizing DAUq. Much of our DAUq growth to date has come from certain users, such as logged-out users or users located outside the United States, who may represent lower monetization opportunities. There is no assurance that our user growth or engagement strategy will continue to be successful or that we will increase the number of DAUq, ARPU, or the amount of monetizable content on our platform. Without such growth, we could see our supply of monetizable inventory stay constant or decrease, which may limit or hinder our ability to increase revenue.

As we continue to grow our advertiser base, our revenue depends on our ability to effectively serve enough advertisements that meet the objectives of our advertisers while maintaining a high-quality, relevant, reliable, trustworthy, and innovative user experience. If we are unable to do this on our platform due to either a decline in DAUq, or changes in our products or services or Redditor behavior that reduce our ability to display as many advertisements as our advertisers may request, our business, results of operations, financial condition, and prospects would be adversely affected. Our advertising business can be inventory constrained at times, and the attendant impact on the supply and pricing of our advertising inventory could affect the financial performance of our business. We could find ourselves unable to match customer advertising specifications with available inventory, leaving us unable to deliver the advertising inventory requested and receiving less revenue than otherwise expected. This also could put upward pressure on advertising prices and potentially impact the return advertisers get on their spend, which in turn could affect future advertiser spending. To scale the growth of our advertising services, we will have to successfully develop and target ad products tailored to the interests of our advertising customers and our user base, which may require additional user data. If we are unable to do this with the data, technology, and resources available to us, we may need to rely more heavily on alternative revenue sources to grow our business.

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We will continue to identify and develop potential new revenue streams. We have explored and continue to explore different ways for Redditors to make money on Reddit, including Reddit’s earnings programs for contributors, developers, and creators, while also providing a source of revenue for Reddit as well. We also continue to explore reasonable content licensing opportunities as another possible source of revenue where those opportunities do not conflict with our values and the rights of our Redditors and have only recently generated revenue from this opportunity. There are many aspects of these possible revenue sources which are novel and untested, which makes it challenging to evaluate the viability of any future revenue opportunities or to identify the risks and challenges we may encounter in seeking to execute on our strategies. There can be no assurance that we will be successful in generating meaningful revenue from any of these non-advertising sources. If we are unable to succeed in these monetization efforts or identify new revenue opportunities, our business, results of operations, financial condition, and prospects could be harmed.

In addition, we plan to continue expanding our business operations outside the United States and offering content and advertising to Redditors and advertisers in other languages and countries. We plan to continue to enter new international markets where we have limited or no experience in deploying our services or selling advertisements. In order to expand successfully, we need to offer content and products that are tailored to the interests of local Redditors and the needs of local advertisers, each of which requires significant investment of time and resources. As we expand into new international markets, we may not yet understand the full scope of prospective users’ interests, demographics, and culture, or advertiser expectations, target audiences, and return on advertising spend, in those markets. This may cause us to expand into markets before we are able to offer a service and advertising platform that has been sufficiently localized for those markets or where those markets lack the necessary demand and infrastructure for long-term adoption of our services. If we are unsuccessful in deploying, scaling, or managing our operations in international markets, our business, results of operations, financial condition, and prospects could be adversely affected.

We generate a majority of our revenue from advertising. We face intense competition for advertising spend both inside and outside the United States, and we are subject to a rapidly evolving technology landscape. If we fail to attract or retain advertisers, or advertisers do not maintain or increase their advertising budgets, our business, results of operations, financial condition, and prospects could be adversely affected.

A majority of our revenue is generated from third parties advertising on our platform. For the years ended December 31, 2024 and 2023, approximately 91% and 98% of our revenue was generated from third parties advertising on our platform, respectively. In addition, a substantial portion of our revenue is derived from a small number of advertisers, with our top ten largest customers accounting for approximately 25% and 26% of our revenue for the years ended December 31, 2024 and 2023, respectively. As is common in our industry, our advertisers do not have long-term advertising commitments with us, and we are at risk if we lose any major advertisers or experience a deterioration in our relationships with them or their agencies. Our advertising revenue could be adversely affected by a number of factors, including:

•our advertisers’ inability to optimize their campaigns or measure the results of their campaigns;

•our inability to increase ARPU or otherwise monetize DAUq at the same or higher rate as DAUq growth, including if that growth occurs in markets that do not generate as much revenue as the United States;

•restrictions placed on, or the relevance of, ads outside of the United States, such as China, where Reddit is not directly accessible;

•product or service changes we may make that change the size, frequency, or relative prominence of ads displayed on our platform or otherwise impact Redditor engagement with ads;

•our inability to effectively monetize our international user base or our logged-out audience;

•the impact of new technologies or access to Reddit content through third-party applications that block or obscure the display of our ads;

•timing and resources required to attract advertisers;

•adverse legal developments relating to advertising, like advertising technologies or advertising effectiveness measurement tools, including legislative and regulatory developments, and developments in litigation; and

•other risks described in this Quarterly Report on Form 10-Q.

We also face intense competition from a wide range of platforms and traditional media, and ongoing advancements in ad-blocking technology may undermine the effectiveness of our advertising, further challenging our ability to maintain and grow

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revenue. The volatility of advertiser spending, particularly in response to economic uncertainty, could exacerbate these risks, making it difficult for us to predict future performance or ensure consistent growth. The occurrence of any of these or other factors could result in a reduction in demand for our ads, which may reduce the prices we receive for our ads, either of which would negatively affect our business, results of operations, financial condition, and prospects. Additionally, our international expansion introduces additional risks, such as operational challenges and regulatory compliance, which could further harm our revenue growth and results of operations.

If we do not develop successful new products and services or improve existing products and services, our business will suffer.

Our ability to retain, increase, and engage Redditors and increase our revenue depends heavily on our ability to continue to evolve our existing products and services and to create successful new products and services. We have invested, and expect to continue to invest, in improvements to our platform, significant changes to our existing products and services, new and unproven products and services, including machine learning and AI, and other initiatives to generate revenue and increase our user base and user engagement. For example, with Reddit’s Contributor Program, we allow users to earn money from their Reddit contributions to the platform and other Redditors.

Improvements to our platform, new products and services, and other initiatives may be costly, difficult to operate, and could divert management’s attention, and there is no guarantee that they will be positively received by Redditors or provide positive returns on our investment. For example, ad formats, such as video ads, may be more engaging, and Redditors may consequently spend less time browsing or searching on our platform, which could adversely affect our revenue. Further, new products or services that we develop may, in certain cases, require regulatory approval prior to launch, result in increased litigation, or subject us to new or enhanced governmental or regulatory requirements or scrutiny. There is no guarantee that we will be able to obtain any required regulatory approval, and our efforts to comply with these laws and regulations could be costly and divert management’s time and effort and may still not guarantee compliance. These new products and updates may also fail to increase the engagement of Redditors and our advertisers or partners, and may even result in short- or long-term decreases in such engagement by disrupting existing Redditor, advertiser, or partner behavior or by introducing performance and quality issues. In addition, in some cases, we may have little or no prior experience related to developing the technologies underlying the new products and services. If our new or enhanced products or services fail to engage, or meet the expectations of, Redditors or our advertisers or developers, or if our business plans or new approaches to monetization are unsuccessful, we may fail to attract new users, retain existing Redditors, or generate sufficient revenue, operating margin, or other value to justify our investments, and our business, results of operations, financial condition, and prospects could be harmed.

Our business relies on an approach to content moderation that, while empowering community-led authenticity, can also result in content on the platform that can be unrelatable, offensive, and that may pose inherent risks.

Our business relies on a layered approach to content moderation. While our communities self-organize and set out rules that are tailored to the unique circumstances of their communities, we provide a set of overarching rules and policies that are intended to be protective, not intrusive. Our site-wide rules prohibit behavior such as harassment, bullying, and violence, including hate based on identity or vulnerability, but are not intended to be exhaustive of every potential situation that every community could encounter. Instead, we rely on our communities to self-organize and supplement our site-wide rules by devising their own rules that are tailored to the unique circumstances of their particular community. Between our rules and the rules devised by our communities, we may not be able to adequately anticipate and cover every situation where offensive, inappropriate, hostile, or otherwise objectionable content may arise.

There can also be significant good faith differences in opinion as to whether particular content violates our site-wide rules or the rules of a specific community. We and our moderators may inconsistently apply the rules, or make decisions regarding content with which other Redditors disagree. From time to time, we and the moderators may need to make difficult moderation decisions that are highly publicized or controversial, including those that result in the departure or disengagement of large numbers of Redditors.

Our approach to content moderation inherently subjects us to numerous risks, including that we may:

•fail to respond in a timely manner, or at all, to the sharing of illegal, illicit, abusive, harmful, or objectionable content on our platform;

•have difficulty identifying offensive, inappropriate, hostile, or otherwise objectionable content, and separating such content from that which is otherwise permissible on our platform (for example, where the content is mistagged or misreported or where there are defects in our automated systems);

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•be more likely to be subject to claims relating to information or content that is published or made available on our platform, including enforcement actions with respect to such information or content;

•have an increased risk of reputational harm in the event that content or actions of some Redditors are deemed to be hostile or inappropriate, even if that content is permitted under our policies;

•be unable to retain a sufficient number of volunteer moderators, or ensure that our moderators will fairly and consistently enforce our rules, either of which could significantly degrade the community experience for other Redditors;

•have an increased risk of negative publicity based on our decisions, or the decisions of our moderators, with respect to permitted or prohibited content; and

•be unable to monetize a significant portion of the content available through our platform and the DAUq accessing such content, if we or our advertising partners deem it unsuitable.

Even where we or the moderators enforce our rules against an individual or group of individuals whom we have identified as violating our rules, we cannot ensure that such individuals do not continue to disrupt our platform. Banned individuals can attempt to evade enforcement by creating a new account. Banned communities may try to reestablish under a different subreddit name. Bad actors may try to repost removed content. While we continue to work on improving our detection capabilities regarding these types of enforcement evasion, we may be unable to prevent such individuals or communities from further disrupting our platform and producing content that violates our rules.

If users or potential users perceive the content available on Reddit to be offensive, inappropriate, hostile, or otherwise objectionable, or if they perceive such content to be representative of our community experience, our reputation would be harmed and we may experience a decline in user growth, retention, and engagement. In addition, some people may perceive our layered approach to content moderation to mean that Reddit condones offensive, inappropriate, hostile, or otherwise objectionable content that is not removed from our platform. Growth in these perceptions could harm our reputation or impair our ability to maintain good relationships with our advertisers or attract new advertisers, which may seriously harm our business. We face significant competition for advertising spend, and if advertising partners perceive our platform to be associated with content deemed to be offensive, inappropriate, hostile, or otherwise objectionable or problematic, our business, results of operations, financial condition, and prospects could be adversely affected.

We rely on an approach to content moderation that depends on Redditors who volunteer to be moderators of their communities. If we fail to retain a sufficient number of moderators who are willing to work in good faith within our policies or if we fail to properly manage our relationship with moderators, or if a sizable number of moderators choose to take actions that disrupt our services, our business, results of operations, financial condition, and prospects could be adversely affected.

Redditors who volunteer to be moderators of Reddit communities are an important part of our business’s ecosystem. Each community relies on one or more moderators who not only review content but also define and enforce community rules. Our business relies on moderators to engage in good faith and to manage their subreddits in a manner that meets the needs of the subreddit’s members. Our approach to content moderation depends on the activities of the moderators to protect the experiences of the members of their communities. Our approach requires that moderators be sufficiently active in their moderation activities, depending on the size and scale of their communities. For the larger communities, the need for moderators can be significant, requiring ever-increasing numbers of moderators willing to volunteer their time to effectively scale with the size of the community. In addition, the enforcement demands placed on moderators can increase dramatically on short notice if traffic to a particular subreddit increases due to current events or trends, for example, r/ wallstreetbets, or if a community is subject to coordinated spam or abuse campaigns, despite the availability of tools and the efforts of our employees who oversee and enforce site-wide rules. As communities grow, it can become more and more challenging for communities to find qualified people willing to act as moderators.

Moreover, moderators within a community may disagree on the vision for, or direction of, the community, or may simply decide not to work together, resulting in a degraded community experience and subreddit disruption, instability, stagnation, or even dissolution. Moderators, even when acting in good faith, may have different values or viewpoints than what others view as socially acceptable or, worse, may be bad actors against whom we need to enforce our rules.

While we provide tools to our communities to manage their subreddits, our moderators also rely on their own and third-party tools. Any disruption to, or lack of availability of, these third-party tools could harm our moderators’ ability to review content and enforce community rules. Further, if we are unable to provide effective support for third-party moderation tools, develop our own such tools, or otherwise change what tools are available to moderators, our moderators could decide to leave

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our platform and may encourage their communities to follow them to a new platform, which would adversely affect our business, results of operations, financial condition, and prospects.

Because moderators are volunteers, any moderator can decide to stop acting as a moderator and participate only as a community member, or to leave our platform entirely. Certain moderators, especially those who moderate large communities or a large number of communities, may be able to leverage their influence within those communities to change the dynamics of the discourse within the communities or to disrupt the normal operation of their communities or other communities on our platform. Moderators can also band together and, for various reasons, including changes to Reddit’s product or policies, decide to shut down the normal operation of their communities in a manner that degrades the experiences of all Redditors in the affected communities and that can negatively impact Redditors who continue to use our service and reduce the amount of monetizable content generated by Redditors. For example, in response to certain changes to our API policies in June 2023, moderators of certain communities inhibited normal operations of the communities they operate, in many cases in violation of our site-wide rules. While these activities have not historically had a material impact on our business or results of operations, similar actions by moderators and/or their communities in the future could adversely affect our business, results of operations, financial condition, and prospects.

Our ability to generate revenue depends on the development and availability of tools to accurately measure the effectiveness of advertisements on our platform.

Most advertisers rely on tools that measure the effectiveness of their ad campaigns or that verify viewability of their ads on our platform in order to allocate their advertising spend among various formats and platforms. If we are unable to measure the effectiveness of advertising on our platform or we are unable to convince advertisers that our platform should be part of a larger advertising budget, our ability to increase the demand and pricing of our advertising products and maintain or scale our advertising revenue will be limited. Our tools may be less developed than those of other platforms with which we compete for advertising spend, in particular relative to those platforms that collect more personal information than we do. Therefore, our ability to develop and offer tools that accurately measure the effectiveness of a campaign or verify ad viewability on our platform will be critical to our ability to attract new advertisers and retain, and increase spend from, our existing advertisers.

Developing and improving these tools may require significant time and resources and additional investment, and in some cases we rely on third parties to provide data and technology needed to provide certain measurements or other functions to our advertisers. If we cannot continue to develop and improve our advertising tools in a timely fashion, those tools are not reliable, difficult to use, or otherwise unsatisfactory to our advertisers, or the results are inconsistent with advertiser goals, our advertising revenue could be adversely affected.

In addition, web and mobile browser developers, such as Apple, Microsoft, and Google, have implemented, and may continue to implement, changes in their browser or device operating systems that impair our ability to measure traffic in general and, in particular, the effectiveness of advertising on our platform. Such changes include limiting the use of first-party and third-party cookies, such as Apple’s launch of its Intelligent Tracking Prevention (“ITP”) feature in its Safari browser. They also include Apple’s App Tracking Transparency framework which imposes additional user permissions for certain types of user tracking. Even in situations where we do not engage in the type of user tracking that is the target of such changes, these restrictions and evolving privacy regulations requiring us or our advertisers to obtain user consent prior to the use of cookies or other tracking technologies, nevertheless may make it more difficult for us to measure our traffic in general, and, in particular, impair or limit our advertising attribution and conversion capabilities. Such restrictions, in combination with evolving legal and regulatory requirements, may impede our ability to attract and retain advertisers who rely on access to such data.

We rely heavily on our ability to collect and share data and metrics to help new and existing advertisers understand the performance of advertising campaigns. If advertisers do not perceive our metrics to be accurate representations of our user base and user engagement, or if we discover inaccuracies in our metrics, they may be less willing to allocate their budgets or resources to our platform, which could harm our business, results of operations, financial condition, and prospects. See “—We rely on internal company data, assumptions, and estimates to calculate certain of our key metrics, and real or perceived inaccuracies in such current or historical metrics may harm our reputation and negatively affect our business.”

Reddit growth and engagement depends upon effective interoperation with external ecosystems, like operating systems, application stores, networks, devices, web browsers, regulations, and standards that we do not control. If we are unable to adapt to product and policy changes in such ecosystems, or if we do not effectively operate with or receive favorable placements within such ecosystems, our usage could decline and our business, results of operations, financial condition, and prospects could be adversely affected.

Because we make our products and services available across a variety of operating systems, networks, and websites, we are dependent on the interoperability of our products and services with popular devices, desktop and mobile operating systems, and

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web browsers that we do not control, such as Mac OS, Windows, Android, iOS, Chrome, Safari, and Firefox. Any changes to these operating systems, devices, web browsers, or online stores distributing our apps that impact the accessibility, speed, or functionality of our products and services or give preferential treatment to competitive products could harm usage of our products and services. Further, if such operating systems or application stores limit the availability of our apps, make changes that degrade the functionality of our apps, increase the cost of using our apps, impose terms of use unsatisfactory to us, limit our ability to target or measure the effectiveness of ads, or modify their search or ratings algorithms in ways that are detrimental to us, or if our competitors’ placement in such mobile operating systems’ application store is more prominent than the placement of our apps, our user growth could be adversely affected. Any changes in such operating systems and application stores that degrade the functionality of our apps or give preferential treatment to our competitors’ apps could also adversely affect our platform’s usage across devices. For example, some operating systems have implemented or explored changes to the underlying application architecture, such as Apple’s App Tracking Transparency, or specialized infrastructure for advertisement-driven app installations, such as SKAdNetwork, which reduce our ability to target and measure advertising and, in turn, may negatively impact the size of the budgets that advertisers are willing to commit to us. Some marketplaces have explored changing their policies regarding what content is acceptable within an application. If we are unable to adapt to such changes, this could adversely affect our platform’s access to and usage within those ecosystems. Moreover, if the number of platforms for which we develop our products expands, it will result in an increase in our operating expenses.

As new mobile devices and mobile platforms are released, there is no guarantee that certain mobile devices will continue to support our platform or effectively roll out updates to our apps. Additionally, in order to deliver high-quality apps, we need to ensure that our products and services are designed to work effectively with a range of mobile technologies, systems, networks, and standards. We may not be successful in developing or maintaining relationships with key participants in the mobile industry that enhance Redditors’ experience. If Redditors encounter any difficulty accessing or using our apps on their mobile devices or if we are unable to adapt to changes in popular mobile operating systems, our business, results of operations, financial condition, and prospects could be adversely affected.

Additionally, we are subject to the standard policies and terms of service of these operating systems, as well as policies and terms of service of the various application stores that make our apps and experiences available to our developers, creators, and users. These policies and terms of service govern the availability, promotion, distribution, content, and operation generally of applications and experiences on such operating systems and stores. Each provider of these operating systems and stores has broad discretion to change and interpret its terms of service and policies with respect to our platform and those changes may be unfavorable to us and our developers’, creators’, and users’ use of our platform. If we were to violate, or an operating system provider or application store believes that we have violated, its terms of service or policies, that operating system provider or application store could limit or discontinue our access to its operating system or store. In some cases these requirements may not be clear or our interpretation of the requirements may not align with the interpretation of the operating system provider or application store, which could lead to inconsistent enforcement of these terms of service or policies against us, and could also result in the operating system provider or application store limiting or discontinuing access to its operating system or store. Any limitation on or discontinuation of our access to any third-party platform or application store could adversely affect our business, results of operations, financial condition, and prospects.

We rely on internal company data, assumptions, and estimates to calculate certain of our key metrics, and real or perceived inaccuracies in such current or historical metrics may harm our reputation and negatively affect our business.

We regularly review metrics, including our DAUq metric, to evaluate growth trends, measure our performance, and make strategic decisions. We calculate our DAUq using internal company data. While this number is based on what we believe to be reasonable calculations for the applicable period of measurement, there are inherent challenges in measuring DAUq. DAUq is intended to capture traffic where a Reddit page has been viewed or the Reddit app opened at least once and, notably, include both traffic from those who have logged in to a registered account as well as from those who have not logged in to—or do not have—a registered account. In general, it is more challenging to accurately count logged-out traffic, since counting accuracy is dependent on deduplicating traffic where we do not have a registered user identifier. While we use various techniques to detect whether the same user has performed multiple views, including cookies and traffic analysis, these techniques are not guaranteed to accurately deduplicate the traffic, especially for logged-out traffic. In addition, some visitors browse Reddit using an “incognito” or “private browsing” mode. Given the privacy protections surrounding such traffic, we often do not have adequate information to accurately deduplicate such traffic.

Our DAUq metrics may also be impacted by our efforts to reduce the number of false, spam, and bot accounts in existence on our platform. We regularly deactivate false, spam, and bot accounts that violate our terms or policies, and exclude these users from the calculation of our DAUq metric; however, we will not succeed in identifying and removing all false, spam, and bot accounts, which means that our DAUq count could be overstated. We are continually seeking to improve our ability to estimate the total number of false, spam, and bot accounts and eliminate them from the calculation of our DAUq, although our

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quarterly average DAUq metric may continue to reflect such accounts if, in our view, the impact of their inclusion has an immaterial impact on our average DAUq for the given quarter. Moreover, a single person or organization may hold multiple accounts and may use more than one account to perform multiple views within a relevant period. We lack adequate information to effectively deduplicate such traffic from different registered accounts that may come from the same person or organization. As such, the calculation of our DAUq may not accurately reflect the actual number of people or organizations using our platform.

A portion of our historical DAUq metric counts views of pages that were hosted using Google’s Accelerated Mobile Page (“AMP”) framework. The accuracy of counting the DAUq attributable to this AMP traffic relies on the accuracy and completeness of information received from Google used to compute the DAUq metric. Unfortunately, the information provided by Google historically was not complete and consistent. To the extent that our historical metric includes views of pages hosted on third-party infrastructure, like Google’s deprecated AMP framework, the accuracy of our metrics will depend on the accuracy and consistency of the information received from any such third party. As a result of these and any future changes, our DAUq metric is not directly comparable quarter over quarter or year over year, and may not be comparable period over period in the future.

The risks and challenges relating to our DAUq metric are also applicable to our WAUq metric, and while we may consider and possibly disclose other metrics in the future, such as a count of monthly visitors, there may be additional challenges with accurately counting such metrics. For example, deduplicating screenviews across an entire week, such as with our WAUq metric, or across an entire month exacerbates the deduplication challenges described above. In certain cases, we may need to rely on estimation techniques to improve the accuracy of such metrics. The accuracy of these techniques will depend on the methodologies chosen, resulting in a metric that may not accurately reflect the monthly traffic to our platform.

We regularly review and continually seek to improve the accuracy of and our ability to track such data, but given the complexity of the systems involved and the rapidly changing nature of mobile devices and systems, we expect to continue to encounter challenges, particularly if we continue to expand in parts of the world where mobile data systems and connections are less stable. In addition, we may improve or change our methodologies for tracking these metrics over time, which could result in unexpected changes to our metrics, including the metrics we publicly disclose. As a result, while any future periods may benefit from such improvement or change, prior periods may not be as accurate or comparable, or we may need to adjust such prior periods. The methodologies used to measure these metrics require significant judgment and are also susceptible to algorithmic or other technical errors. In addition, our methodologies for tracking these metrics may change over time, which could result in unexpected changes to our metrics, including the metrics we publicly disclose. If the internal systems and tools we use to track these metrics undercount or overcount performance or contain algorithmic or other technical errors, the data we report may not be accurate. Further, as our business develops, we may revise or cease reporting metrics if we determine that such metrics are no longer accurate or appropriate measures of our performance.

Errors or inaccuracies in our metrics or data could also result in incorrect business decisions and inefficiencies. For instance, if a significant understatement or overstatement of active users were to occur, we may expend resources to implement unnecessary business measures or fail to take required actions to attract a sufficient number of users to satisfy our growth strategies. In addition, our advertising partners rely on our metrics to inform ad spend. Inaccuracies or perceived inaccuracies in our metrics, may result in advertisers spending less with us, which could negatively affect our revenue. We continually seek to address technical issues in our ability to record such data and improve our accuracy, but given the complexity of the systems involved and the rapidly changing nature of mobile devices and systems, we expect these issues to continue, particularly if we continue to expand in parts of the world where mobile data systems and connections are less stable. If our operational metrics are not accurate representations of our business, or if investors do not perceive these metrics to be accurate, or if we discover material inaccuracies with respect to these figures, our reputation may be significantly harmed, the market price of our Class A common stock could decline, we may be subject to stockholder litigation, and our business, results of operations, financial condition, and prospects could be adversely affected.

Disruptions or other business interruptions that affect the availability of our platform could adversely impact our operations and overall business.

Currently, our cloud service infrastructure is run on our cloud services providers (“CSPs”), which are currently Amazon Web Services and Google Cloud Platform. We have experienced, and expect in the future that we may experience from time to time, interruptions, delays, or outages in service availability due to a variety of factors, including outages at our CSPs. Capacity constraints could arise from a number of causes such as technical failures, natural disasters, fraud, or data breaches or other security incidents or attacks. Our platform’s continuing and uninterrupted performance is critical to our success, and any disruption of, or interference with, our use of CSPs could impair our ability to deliver our solutions to our users, resulting in legal liability, user dissatisfaction, damage to our reputation, loss of users, and harm to our business. The level of service provided by our CSPs, or regular or prolonged interruptions in that service, could also impact the use of, and Redditors’

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satisfaction with, our platform and could harm our business and reputation. Since our platform’s continuing and uninterrupted performance is important to our success, sustained or repeated system failures would reduce the attractiveness of our platform. In addition, hosting costs may increase as our user base grows, which could adversely affect our business, results of operations, financial condition, and prospects.

Furthermore, our CSPs have discretion to change and interpret their terms of service and other policies with respect to us, including on contract renewal, and those actions may be unfavorable to our business operations. Our CSPs may also take actions beyond our control that could seriously harm our business, including discontinuing or limiting our access to one or more cloud services, increasing pricing terms, terminating or seeking to terminate our contractual relationship altogether (which they may be able to do for their convenience), or altering how we are able to process data in a way that is unfavorable or costly to us. If our arrangements with either of our CSPs were terminated, we could experience interruptions on our platform and in our ability to make our content available to users, as well as delays and additional expenses in arranging for alternative cloud infrastructure services. Such a transition may require technical changes to our platform, including, but not limited to, our cloud service infrastructure which was designed to run on our CSPs. Making such changes could be costly in terms of time and financial resources and could adversely affect our business, results of operations, financial condition, and prospects.

Further, a significant natural disaster or other catastrophic event, such as an earthquake, fire, flood, power outage, telecommunications failure, cyberattack, war, terrorist attack, sabotage, other intentional acts of vandalism or misconduct, geopolitical event, pandemic or other public health crisis, such as the COVID-19 pandemic, or other catastrophic occurrence could adversely affect our business, results of operations, financial condition, and prospects. We have offices and a significant number of employees in the San Francisco Bay Area, a region known for seismic activity. Furthermore, escalation of geopolitical tensions, including as a result of escalations in the ongoing conflict between Russia and Ukraine, the escalation of conflict in the Middle East, or tariffs or other trade restrictions by the United States and other countries, could have a broader impact that expands into other markets where we do business, which could adversely affect our business, vendors, partners, Redditors, or the economy as a whole. Despite any precautions we may take, the occurrence of a natural disaster or other unanticipated problems could result in lengthy interruptions in our services or disruptions in our activities or the activities of our vendors, partners, Redditors, or the economy as a whole. All of the aforementioned risks may be further increased if our disaster recovery plans prove to be inadequate. We do not carry business interruption insurance sufficient to compensate us for the potentially significant losses, including the potential harm to our business that may result from interruptions in our ability to provide our products and services. Any such natural disaster or man-made problem could adversely impact our business, results of operations, financial condition, and prospects.

If we fail to detect attempts to manipulate our platform, including fraudulent activity within our advertising systems, Redditors and our advertisers could lose confidence in us, thereby damaging our reputation and deterring usage of our products and services.

We are exposed to a variety of forms of problematic activity across our platform, including sophisticated attempts by bad actors to manipulate our systems to generate traffic that may not represent genuine Redditor interest or intent. For example, an attacker may attempt to automate the activities of an account or multiple accounts using a “bot” so as to mimic authentic user activity, such as posting, commenting, voting, or clicking and engaging with advertisements. This sort of manipulation can result in the promotion of inauthentic, low-quality content that is false, misleading, illegal, or undesirable. Such manipulation can also be more difficult to detect due to the use of emerging technologies, including AI and LLM models, by bad actors. It can also degrade the quality of our services and can also undermine the operation of our monetization systems, including our advertising systems, resulting in incorrect counting and charging of advertising partners.

While we invest in efforts to detect and prevent inauthentic content or invalid traffic, including investments in proprietary technologies to detect and address content and vote manipulation, we may be unable to adequately detect and prevent such abuses. If we fail to detect and prevent such abuse, it could hurt our reputation for authentic engagement and reduce use of our platform, harming our business, results of operations, financial condition, and prospects. Advertisers may seek refunds or credit for activity that they deem inauthentic. Even where we are able to detect fraudulent activity, this may result in a need to provide retroactive refunds or credits for historical inauthentic activity, further harming our business, results of operations, financial condition, and prospects.

We have explored, and will continue to explore, business opportunities in content licensing for purposes including machine learning, business analysis, display, and training generative AI models. We are in the early stages of our content licensing efforts, and the market for content is new and evolving rapidly. There is no assurance that we will be able to sustain revenues from these efforts.

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We have explored, and will continue to explore, business opportunities in licensing Reddit content for purposes that do not conflict with our values and the rights of Redditors. We are only in the early stages of these content licensing efforts and we may not be able to grow these efforts into a sustainable business.

The licensing of content for machine learning and AI training purposes is a novel business model without an established track record, which makes it difficult to evaluate our future prospects and the risks and challenges we may encounter in seeking to execute on this opportunity. Although we have negotiated content licensing agreements with a number of partners that are medium-term in length, to date, substantially all of the contract value associated with our licensing revenue is derived from two of our partners, and these arrangements may not be renewed, or they may be renewed based on less favorable terms, such as using fewer services at lower pricing. Our content licensing agreements are subject to terms and conditions, including API performance requirements, that we may be unable to meet. In addition, our existing content licensing agreements may be terminated, not renewed, or renewed on less favorable terms. The commercial market for LLMs may not develop or may be limited by regulation or other factors, and accordingly, the value of content for AI training purposes may be reduced over time, and we may also not be able to secure arrangements on similar terms, or at all, with any other licensees. While our content licensing arrangements include protections against abuse and misuse of Reddit content, we may be unable to adequately control the misbehavior of partners or adequately protect our reputation externally and with respect to our communities.

Moreover, some companies have and may continue to decline to license Reddit content and use such content without license given its open nature, even if in violation of the legal terms governing our services. For example, some companies have constructed very large commercial language models using Reddit content without entering into a license agreement with us. While we have commenced litigation and will continue to vigorously enforce against such entities, such enforcement activities could take years to resolve, result in substantial expense and divert management’s attention and other resources, and we may not ultimately be successful.

We are subject to certain risks as a mission-based company.

Our mission—empower communities and make their knowledge accessible to everyone—and company values are a significant part of our business strategy and who we are as a company. We believe that Redditors value our commitment to our mission of open discourse. However, because we hold ourselves to such high standards, and because we believe Redditors and our moderators have high expectations of us, we may be more severely affected by negative reports or publicity if we fail, or are perceived to have failed, to live up to our mission. As a result, our brand and reputation may be negatively affected by actions we take that are viewed as contrary to that mission. In addition, adhering to our mission may negatively affect our reputation. For example, we remain under continued public scrutiny with regard to the moderation of content related to global elections, as we experienced during the 2024 U.S. presidential election. In these or other circumstances, the damage to our reputation may be greater than to other companies that do not share similar values with us, and it may take us longer to recover from such an incident and gain back the trust of Redditors.

We may make decisions regarding our business and products in accordance with our mission and values that may reduce our short- or medium-term results of operations if we believe those decisions are consistent with our mission and will improve the aggregate Redditor experience. Although we expect that our commitment to our mission will, accordingly, improve our financial performance over the long term, these decisions may not be consistent with the expectations of investors and any longer-term benefits may not materialize within the time frame we expect or at all, which could harm our business, results of operations, financial condition, and prospects.

Risks Related to Human Capital and Culture

We cannot assure you that we will effectively manage our growth.

Our employee headcount and the scope and complexity of our business have increased significantly, with the number of full-time employees increasing to 2,233 as of December 31, 2024 from 2,013 as of December 31, 2023. The growth and expansion of our business and products create significant challenges for our management, including managing multiple relationships with Redditors, advertisers, partners, and other third parties, and constraining operational and financial resources. If our operations or the number of third-party relationships continue to grow, our information-technology systems and our internal controls and procedures may not adequately support our operations. In addition, some members of our management do not have significant experience managing large global business operations, so our management may not be able to manage such growth effectively. To effectively manage our growth, we must continue to improve our operational, financial, and management processes and systems and effectively expand, train, and manage our employee base.

Further, although we expect to continue to grow our headcount in future periods, we have in the past, and may in the future, implement organizational changes to pursue greater efficiency and realign our business and strategic priorities. We may

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not experience the anticipated benefits, in whole or in part, of such strategic reprioritizations, and the related organizational changes, including reductions in our workforce, could result in unintended consequences, such as decreased morale among remaining employees and reputational damage, which could make it more difficult for us to retain existing employees or hire new employees in the future, greater than anticipated costs, the loss of institutional knowledge and expertise, and increased difficulty managing the scale and complexity of our business. If we do not effectively redistribute the duties and obligations of departed employees among our remaining employees, or if employees who were not affected by the reduction in our workforce seek alternative employment, we could incur unplanned additional expenses to ensure adequate resourcing and our productivity and business could be harmed.

Our business depends on attracting and retaining high-quality personnel in sales, services, engineering, marketing, finance, and support functions.

Our success depends in large part on our ability to attract and retain high-quality personnel representing diverse backgrounds, experiences, and skill sets in sales, services, engineering, marketing, finance, and support functions. Maintaining our brand and reputation, as well as a diverse and inclusive work environment that enables all our employees to thrive, is important to our ability to recruit and retain employees. Changes to U.S. immigration policies that restrain the flow of technical and professional talent may inhibit our ability to adequately staff our research and development efforts. Competition for qualified employees is intense in our industry, and the loss of even a few qualified employees, or an inability to attract, retain, and motivate additional highly skilled employees required for the planned expansion of our business could harm our results of operations and impair our ability to grow. To attract and retain key personnel, we use various measures, including an equity incentive program. These measures may not be enough to attract and retain the personnel we require to operate our business effectively. In addition, we have a number of current employees who hold equity in our company or whose equity awards became substantially vested upon the completion of our initial public offering. As a result, it may be difficult for us to continue to retain and motivate these employees, and the value of their holdings could affect their decisions about whether they continue to work for us. Our ability to attract, retain, and motivate employees may be adversely affected by declines in the market price of our Class A common stock. If we issue significant equity to attract new employees or to retain our existing employees, we would incur substantial additional stock-based compensation expense and the ownership of our existing stockholders would be further diluted.

As our company grows and evolves, we may need to implement more complex organizational management structures, adapt our corporate culture and work environments, streamline our organization, or adjust the size and structure of our workforce to scale for the future and execute our long-term growth plan. These changes could have an adverse impact on our corporate culture and employee morale, which could, in turn, adversely affect our reputation as an employer and harm our ability to attract and retain high-quality personnel. If we fail to attract new personnel, or to retain and motivate our current personnel, our business, results of operations, financial condition, and prospects could be adversely affected.

We depend on our senior management team and other key employees, and the loss of one or more of these employees could adversely affect our business.

Our ability to efficiently execute our business strategy is dependent upon the continued service and performance of our senior management team and other key employees, particularly Steven Huffman, our co-founder, Chief Executive Officer, and President. Mr. Huffman is an at-will employee, which means that he could resign or could be terminated for any reason at any time. Mr. Huffman is critical to the management of our company and instrumental in the development of our technology and our strategic direction, and should he stop working for us for any reason, it is unlikely that we would be able to immediately find a suitable replacement.

The loss of key employees, including members of our senior management team, could disrupt our operations, adversely impact employee retention and morale, and seriously harm our business. Further, if our senior management team and other key employees fail to work together effectively and to execute our plans and strategies on a timely basis, our business could be harmed. We also do not currently maintain any key-person life insurance policies. Even if we were to obtain such policies, the loss of Mr. Huffman or other key employees, including members of our senior management team, could adversely affect our business, results of operations, financial condition, and prospects.

We believe that our corporate culture has contributed to our success, and if we cannot maintain this culture as we grow, we could lose the innovation, creativity, and teamwork fostered by our culture, and our business may be harmed.

We believe that our corporate culture has been a key contributor to our success. If we do not continue to develop our corporate culture as we grow and evolve, it could negatively impact our ability to foster the innovation, creativity, and teamwork that we believe is important to support our growth. As our organization grows and we are required to implement

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more complex organizational structures, we may find it increasingly difficult to maintain the beneficial aspects of our corporate culture, which could negatively impact our future success and harm our business.

Risks Related to Cybersecurity, Information Systems, and Intellectual Property

Our business, results of operations, financial condition, and prospects may be harmed by our failure to timely and effectively scale and adapt our existing technology and infrastructure.

As Redditors generate more content, we may be required to expand and adapt our technology and infrastructure to continue to reliably store, serve, and analyze this content. It may become increasingly difficult to maintain and improve the performance of our products and services, especially during peak usage times, as our products and services become more complex and our traffic increases. In addition, because our cloud service infrastructure is run on CSPs, we cannot guarantee that we will be able to expand our infrastructure to meet demand in a timely manner, or on favorable economic terms. This is particularly challenging with regard to increasing international traffic demands. If Redditors are not able to access our platform or we are not able to make content available rapidly on our platform, Redditors may seek other channels to obtain the content, and may not return to Reddit or use Reddit as often in the future, or at all. This would negatively impact our ability to attract new users to Reddit and advertisers and the frequency with which people return to Reddit. We expect to continue to make investments to maintain and improve the capacity, capability, and reliability of our infrastructure. To the extent that we do not effectively address capacity constraints, upgrade our systems as needed, and continually develop our technology and infrastructure to accommodate actual and anticipated changes in technology, our business, results of operations, financial condition, and prospects may be harmed.

We continue to scale the capacity of, and enhance the capability and reliability of, our infrastructure to support DAUq growth and increased activity on our platform. We expect that investments and expenses associated with our infrastructure will continue to grow, including operating costs, the cost to acquire additional servers and networking equipment to increase the capacity of our infrastructure, increased utilization of third-party cloud computing and associated costs thereof, and increased bandwidth costs. The improvement of our infrastructure requires a significant investment of our management’s time and our financial resources. If we fail to efficiently scale and manage our infrastructure, our business, results of operations, financial condition, and prospects would be adversely impacted.

If our security measures are breached, or if our products and services are subject to attacks involving our systems or data, some of which contain personal information, or that degrade or deny the ability of users to access our products and services, our products and services may be perceived as not being secure, Redditors and advertisers may curtail or stop using our products and services, and our reputation, business, results of operations, financial condition, and prospects could be harmed.

We receive, collect, store, maintain, transfer, submit, and otherwise process personal user, employee, advertiser, and other personal, confidential, or sensitive information, and data breaches and other data security incidents expose us to a risk of loss of, or unauthorized access to, this personal information, litigation, and potential liability. As such, we are an attractive target for data security attacks by third parties. Any actual or perceived failure to prevent or mitigate data security incidents or improper access to, or use, acquisition, disclosure, alteration, or destruction of, any such data could result in significant liability and a material loss of revenue resulting from the adverse impact on our reputation and brand, a diminished ability to retain existing, or attract new customers, and disruption to our business. We rely on third-party service providers to host or otherwise process some of our data and that of our customers, and any failure by such third party, or any other entity in our collective supply chain, to prevent or mitigate data security breaches or improper access to, or use, acquisition, disclosure, alteration, or destruction of, such information could have similar adverse consequences for us.

We have experienced in the past, and may in the future experience, cybersecurity attacks (including denial of service, phishing, social engineering, ransomware, malware, and integrity attacks), computer viruses, software bugs, internet interruptions, disruptions, or losses, spam or other attacks, breach by intentional or negligent conduct, theft or fraud on the part of employees or other third parties, including state-sponsored organizations with significant financial and technological resources, terrorism, improper operation, data loss, coding or configuration errors, credential stuffing, human error, natural disasters, and other security breaches, and as a result, unauthorized parties may impede or deny access to our platform or otherwise obtain access to our data or Redditors’ or advertisers’ data, including personal information. For example, in February 2023, we experienced a data security incident in which an attacker was able to obtain an employee’s login credentials to gain access to certain contact information, internal documents, source code, and other internal business information. We also regularly encounter attempts to create false or undesirable user accounts, purchase ads, or take other actions on our platform for purposes such as spamming, engaging in coordinated information manipulation, or other objectionable ends. Our efforts to address undesirable activity on our platform also increase the risk of retaliatory attack. While we take efforts to protect our systems and data, including taking steps to protect the integrity of our APIs, there can be no assurance that our safety and

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security measures (and those of our third-party providers) will prevent damage to, or interruption or breach of, our information systems, data, and operations. Our technology may fail to adequately secure the personal information and other data we maintain, and we cannot entirely eliminate the risk of improper or unauthorized access to, or disclosure of, personal information and other data, other data security events that impact the integrity or availability of personal information or our systems and operations, or the related costs we may incur to mitigate and remediate the consequences from such events. We may also assume liabilities for breaches experienced by the companies we acquire. Additionally, we cannot guarantee that our cybersecurity insurance coverage would be sufficient to cover all applicable losses. Any systems failure or compromise of our security that results in the unauthorized access to, or release of, Redditors’ or advertisers’ data or disruption of access to our platform could significantly limit the adoption of our products and services, as well as harm our reputation and brand and, therefore, our business.

In addition, our products operate in conjunction with, and we are dependent upon, third-party products and components across a broad ecosystem. There have been in the past, and may in the future be, significant attacks on certain of our third-party providers, such as the LastPass cybersecurity incidents in 2022. We cannot guarantee that our or our third-party providers’ systems and networks have not been breached or that they do not contain exploitable defects or bugs that could result in a breach of, or disruption to, our systems and networks or the systems and networks of third parties that support us and our services. If there is a security vulnerability, error, or other bug in one of these third-party products or components and if there is a security exploit targeting them, we could face increased costs, liability claims, reduced revenue, or harm to our reputation or competitive position. The natural sunsetting of third-party products and operating systems that we use requires that our infrastructure teams reallocate time and attention to migrations and updates, during which period potential security vulnerabilities could be exploited. Third-party risks may also include insufficient security measures, data location uncertainty, and the possibility of data storage in inappropriate jurisdictions where laws or security measures may be inadequate, and our ability to monitor our third-party service providers’ data security practices are limited. Although we generally have agreements relating to cybersecurity and data privacy in place with our third-party providers, they are limited in nature and we cannot guarantee that such agreements will prevent the accidental or unauthorized access to, or disclosure, loss, destruction, disablement, or encryption of, use or misuse of, or modification of, data (including personal information), or enable us to obtain adequate or any reimbursement from our third-party providers in the event we should suffer any such data security-related incidents. Due to applicable laws, rules, and regulations, or contractual obligations, we may be held responsible for any information security failure or cybersecurity attack attributed to our vendors as they relate to the information we share with them. A vulnerability in a third-party service provider’s software or systems, a failure of our third-party service providers’ safeguards, policies, or procedures, or a breach of any third-party service provider’s software or systems could result in the compromise of the confidentiality, integrity, or availability of our systems or the data housed in our third-party solutions.

Our information technology systems and data have been, and may in the future be, subject to increased risks as many of our employees continue to work remotely and utilize network connections, computers, and devices outside our premises or network, including working at home, while in transit, and in public locations. For example, technologies in our employees’ and service providers’ homes may not be as robust as in our offices and could cause the networks, information systems, applications, and other tools available to employees and service providers to be more limited or less reliable than in our offices. Further, the security systems in place at our employees’ and service providers’ homes, or other remote work locations, may be less secure than those used in our offices, and while we have implemented technical and administrative safeguards to help protect our systems as our employees and service providers work remotely, we may be subject to increased cybersecurity risk, which could expose us to risks of data or financial loss, and could disrupt our business operations. There is no guarantee that the privacy, data security, and data protection safeguards we have put in place will be completely effective or that we will not encounter risks associated with employees and service providers accessing company data and systems remotely.

Moreover, according to U.S. government sources and others, the conflict involving Russia and Ukraine has resulted in a heightened risk of cyberattacks against companies like ours that have operations, vendors, and/or supply chain providers located in or around the region of conflict or that are otherwise related to the conflict.

Our data security measures may also be breached due to employee error, malfeasance, theft, fraud, misconduct, or otherwise, or third parties may attempt to fraudulently induce employees, Redditors, or our advertisers to disclose sensitive or personal information in order to gain access to our data or Redditors’ or advertisers’ data or accounts. Since people on Reddit and our advertisers may use Reddit to establish and maintain online identities, unauthorized communications from Reddit accounts that have been compromised may damage their personal security, reputations, and brands as well as our reputation and brand. Because the techniques used to obtain unauthorized access, disable or degrade service, or sabotage or breach systems continue to evolve in sophistication and volume and often are not recognized until launched against a target, we may be unable to anticipate these techniques, timely detect and appropriately remediate and respond, defend against such attacks, or implement adequate preventative measures. Moreover, the increasing sophistication and resources of cyber criminals and other non-state threat actors and increased actions by nation-state actors make keeping up with new threats difficult, as the techniques used to

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obtain unauthorized access to, or to sabotage, systems or networks are constantly evolving and generally are not recognized until launched against a target. Additionally, attackers have used machine learning and AI to launch more automated, targeted, and coordinated attacks against targets. Consequently, we are not always able to, and may in the future be unable to, anticipate these techniques, detect or react in a timely manner, or implement preventative measures, which could result in delays in our detection or remediation of, or other response to, data security breaches and other data security-related incidents. If an actual or perceived breach of our or our third-party providers’ data security occurs, Redditors and our advertisers may be harmed, lose trust and confidence in us, decrease the use of our products and services, or stop using our products and services entirely. In the event of a data security breach, we may also incur significant legal and financial exposure, including as a result of litigation and other claims, regulatory investigations and inquiries, fines and penalties for non-compliance with applicable data privacy-related laws, rules, or regulations, remediation costs, or indemnification requests. Any of these actions could have an adverse effect on our business, results of operations, financial condition, and prospects.

We anticipate that our ongoing efforts related to data privacy, safety, security, and content review will identify instances of misuse of user data or other undesirable activity by third parties on and off our platform.

In addition to our efforts to mitigate cybersecurity risks, we are making investments in privacy, safety, security, and content review efforts to combat misuse of our services and user data by third parties. As a result of these efforts, we may discover incidents of misuse of, or unauthorized access to, user data or other undesirable activity by third parties. We have taken steps to protect the integrity of our APIs, but despite these efforts, our security measures or those of our third-party providers or licensees could be insufficient or breached as a result of third-party action, malfeasance, employee errors, service provider errors, technological limitations, defects or vulnerabilities in our platform or any third-party platform, or otherwise. We may not discover all such incidents or activity, whether as a result of our data or technical limitations, including our lack of visibility over our encrypted services, the scale of activity on our platform, challenges related to our personnel working remotely, the allocation of resources to other projects, or other factors, and the media, or other third parties. Such incidents and activities may include the use of user data or our systems in a manner inconsistent with our terms, contracts, or policies, the existence of false or undesirable user accounts, election interference, improper advertising practices, activities that threaten people’s safety online or offline, or instances of spamming, scraping, data harvesting, unsecured datasets, or spreading misinformation. For example, third parties often attempt to access and collect Reddit site data through “scraping” and other unauthorized mechanisms for unauthorized purposes, such as distributing such data to other parties for commercial purposes or training AI models for commercial purposes. We may also be unsuccessful in our efforts to enforce our policies or otherwise remediate any such incidents. Any of the foregoing developments may negatively affect Redditor trust and engagement, harm our reputation and brand, make it more difficult for us to monetize our APIs, require us to change our business practices in a manner adverse to our business, and negatively affect our business, results of operations, financial condition, and prospects. Any such developments may also subject us to additional litigation and regulatory inquiries, which could subject us to monetary penalties and damages, divert management’s time and attention, and lead to enhanced regulatory oversight.

Our business depends on continued and unimpeded access to our products and services on the internet by Redditors and our advertisers. If we or Redditors experience disruptions in internet service or if internet service providers are able to block, degrade, or charge for access to our products and services, we could incur additional expenses and the loss of users and advertisers, which could undermine our operations.

We depend on the ability of Redditors and our advertisers to access the internet. Currently, this access is provided by companies that have significant market power in the broadband and internet access marketplace, including incumbent telephone companies, cable companies, mobile communications companies, government-owned service providers, device manufacturers, and operating system providers, any of whom could take actions that degrade, disrupt, or increase the cost of user access to our products or services, which would, in turn, negatively impact our business. The adoption of any laws, rules, or regulations that adversely affect the growth, popularity, or use of the internet, including laws, rules, regulations, or practices limiting internet neutrality, could decrease the demand for, or the usage of, our products and services, increase our cost of doing business, and adversely affect our results of operations. We also rely on other companies to maintain reliable network systems that provide adequate speed, data capacity, and security to us and our users. As the internet continues to experience growth in the number of users, frequency of use, and amount of data transmitted, the internet infrastructure on which we and our users rely may be unable to support the demands placed upon it. Frequent or persistent interruptions in our products and services could cause users to believe that our products and services are unreliable, leading them to switch to our competitors or to otherwise avoid our products and services. The failure of the internet infrastructure on which we or our users rely, even for a short period of time, could undermine our operations. To the extent that we do not effectively address capacity constraints, upgrade our systems as needed, or continually develop our technology and network architecture to accommodate actual and anticipated changes in technology, our business, results of operations, financial condition, and prospects could be harmed.

Our products and services may contain undetected software errors, bugs, or other vulnerabilities, which could harm our business, results of operations, financial condition, and prospects.

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Our products and services incorporate complex software, and we encourage employees to quickly develop and help us launch new and innovative features. Our software, including any open source software that is incorporated into our code, may now or in the future contain errors, bugs, or other vulnerabilities. Some errors, bugs, or vulnerabilities in our software code inherently may be difficult to detect and may only be discovered after the product or service has been released for external or internal use. Such errors, bugs, vulnerabilities, or defects could also be exploited by malicious actors and result in exposure of our users’ or advertisers’ data, or otherwise result in a security breach or other security incident. We may need to expend significant financial and development resources to analyze, correct, eliminate, or work around errors or defects or to address and eliminate vulnerabilities. In addition, our products and services are increasingly reliant on machine learning systems and AI, which are complex, subject to increasing litigation and regulatory scrutiny, and may have errors or inadequacies that are not easily detectable. The effectiveness of such AI systems and technologies could be impaired by incomplete, biased, or inadequate inputs or training data, which could lead us to make determinations or recommendations in our products or services that have an adverse effect on our business and financial results. Moreover, these systems may inadvertently reduce our efficiency, or may cause unintentional or unexpected outputs that are incorrect, do not match our business goals, do not comply with our policies or applicable legal requirements, or otherwise are inconsistent with our brand, guiding principles, and mission. Any errors, bugs, or vulnerabilities discovered in our code after release could result in negative user experiences, damage to our reputation, compromised ability of our products and services to perform in a manner consistent with Redditor expectations, delayed product introductions, compromised ability to protect the data of our users or advertisers or an inability to provide some or all of our services, loss of Redditors, loss of advertisers or advertising revenue, or liability for damages, any of which could adversely affect our business, results of operations, financial condition, and prospects.

Many of our products and services contain third-party open source software components, and failure to comply with the terms of the underlying open source software licenses could adversely affect our business, results of operations, financial condition, and prospects.

We use open source software in our products and services and may continue to use open source software in the future. Some open source licenses contain requirements that we make available source code for modifications or derivative works we create based upon the type of open source software. If we combine our proprietary software with open source software in a certain manner, we could, under certain open source licenses, be required to release the source code of our proprietary software to the public on unfavorable terms or at no cost. Any actual or claimed requirement to disclose our proprietary source code or pay damages for breach of contract may allow our competitors to create similar products with lower development effort and time and, ultimately, could result in a loss of sales for us. Some open source software may include generative AI software or other software that incorporates or relies on generative AI. The use of such software may expose us to risks as the intellectual property ownership, license rights, and other legal rights, including copyright, of generative AI software and tools have not been fully interpreted by U.S. or foreign courts or been fully addressed by legislation. It may be challenging to ascertain whether the authors of the original software had sufficient rights to support our usage of the software and data and models underlying the software. Authors of open source software we use may update the terms of open source licenses governing such software to commercial license terms that may require us to pay fees in order to continue using such software. In addition to intellectual property risks, the use of this software may exacerbate other risks, including cybersecurity and privacy risks and other rights issues. This could adversely affect our reputation and expose us to legal liability as well as contractual or regulatory risk.

We regularly contribute software source code to open source projects under open source licenses or release internal software projects under open source licenses, and may continue doing so in the future. Our ability to protect our intellectual property rights with respect to source code which we have made publicly available may be limited. The terms of many open source licenses have not been interpreted by U.S. or foreign courts, and there is a risk that these licenses could be construed in ways that could impose unanticipated conditions or restrictions on our ability to commercialize products or services incorporating such software. Moreover, we cannot assure you that our processes for controlling our use of open source software in our products will be effective. While we monitor our use of open source software and try to ensure that none is used in a manner that would require us to disclose our proprietary source code or that would otherwise breach the terms of an open source license, such use could inadvertently occur, or could be claimed to have occurred, in part because open source license terms are often ambiguous. From time to time, we may face claims from third parties asserting ownership of, or demanding release of, the open source software or derivative works that we develop using such software (which could include our proprietary source code), or otherwise seeking to enforce the terms of the applicable open source license. These claims could result in litigation. If we are held to have breached the terms of an open source software license, we could be required to seek licenses from third parties to continue offering our products or services on terms that are not economically feasible, to re-engineer our products or services, to discontinue the sale of our products or services if re-engineering could not be accomplished on a timely or cost-effective basis, or to make generally available, in source code form, our proprietary code, any of which could adversely affect our business, results of operations, financial condition, and prospects.

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Further, the use and distribution of open source software may entail greater risks than the use of third-party commercial software, as open source licensors generally do not provide warranties or controls on the origin of software. There is typically no support available for open source software, and we cannot ensure that the authors of such open source software will implement or push updates to address security risks or will not abandon further development and maintenance. Many of the risks associated with the use of open source software, such as the lack of warranties or assurances of title or performance, cannot be eliminated, and could, if not properly addressed, negatively affect our business. Any of these risks could be difficult to eliminate or manage and, if not addressed, could have an adverse effect on our business, results of operations, financial condition, and prospects.

We may be unable to obtain, maintain, protect, defend, or enforce our intellectual property adequately, which could harm our business, results of operations, financial condition, and prospects.

We believe that intellectual property is an important part of our industry and business. We rely primarily on a combination of copyright, trademark, patent, and trade secret laws, as well as internal security controls, confidentiality procedures, invention assignment and license agreements, and contractual provisions, to establish and protect our intellectual property rights in the United States and abroad. Various factors outside our control pose a threat to our intellectual property rights, as well as to our products, services, and technologies. For example, the efforts we have taken to protect our intellectual property may not be sufficient or effective, and our copyrights, trademarks, and other intellectual property or proprietary rights may be challenged, contested, narrowed in scope, or held invalid or unenforceable. Further, in light of our reliance on a significant amount of open source materials, we may not have the ability to protect certain of our information and technology. The steps we take to protect our intellectual property rights may not be sufficient to effectively prevent third parties from infringing, misappropriating, or otherwise violating our intellectual property rights or to prevent unauthorized disclosure or unauthorized use of our trade secrets or other confidential information. We may not be effective in policing unauthorized use of our intellectual property or in appropriately managing our open source catalog. Any enforcement efforts we undertake, including litigation, could be time-consuming and expensive, could divert management’s attention and may result in a court determining that our intellectual property rights are unenforceable. If we are not successful in protecting our intellectual property rights in a cost-effective manner, our business, results of operations, financial condition, and prospects could be harmed.

Further, we have filed trademark and patent applications to protect certain of our technology and intellectual property. There can be no assurance that each of our applications will result in the issuance of a registered trademark or a registered patent or that each resulting registration will be maintained. Even if issued, there can be no assurance that our intellectual property rights will be sufficient to protect against others offering products or services that are substantially similar to ours and compete with our business or that unauthorized parties may attempt to copy aspects of our technology and use information that we consider proprietary. For example, it is possible that third parties, including our competitors, may obtain patents relating to technologies that overlap or compete with our technology. If third parties obtain patent protection with respect to such technologies, they may assert that our technology infringes their patents and seek a licensing fee from us or otherwise exclude us from using our technology. We have acquired, and may in the future acquire, additional patents or patent portfolios, license patents from third parties, or agree to license the use of our patents to third parties, which could require significant cash expenditures. Any additional investment in protecting our intellectual property through additional copyright, trademark, patent, or other intellectual property filings could be expensive or time-consuming. We may not be able to obtain protection for our technology and, even if we are successful in obtaining effective copyright, trademark, and patent protection, it is expensive to maintain these rights, both in terms of application and maintenance costs, and the time and cost required to defend our rights could be substantial.

In addition to registered intellectual property rights, we rely on unregistered intellectual property rights, such as trade secrets, confidential information, know-how, and technical information. We seek to protect our intellectual property, technology, and confidential information by requiring our employees, contractors, consultants, and other third parties who develop intellectual property on our behalf to enter into invention assignment agreements, and third parties we share information with to enter into nondisclosure and confidentiality agreements. We cannot guarantee that we have entered into such agreements with each party who has developed intellectual property on our behalf and each party that has or may have had access to our confidential information, know-how, trade secrets, and technical information. These agreements may be insufficient or breached, or may not effectively prevent unauthorized access to or unauthorized use, disclosure, misappropriation, or reverse engineering of, our confidential information, intellectual property, or technology. Moreover, these agreements may not provide an adequate remedy for breaches or unauthorized use or disclosure of our confidential information or technology, or infringement of our intellectual property. Enforcing a claim that a party illegally disclosed or misappropriated a trade secret or know-how is difficult, expensive, and time-consuming, and the outcome is unpredictable. In addition, trade secrets and know-how can be difficult to protect and some courts inside and outside of the United States are less willing or unwilling to protect trade secrets and know-how. If any of our trade secrets were to be lawfully obtained or independently developed by a competitor or other third party, we would have no right to prevent them from using that technology or

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information to compete with us, and our competitive position could be materially and adversely harmed. The loss of trade secret protection could make it easier for third parties to compete with our products and services by copying the functionality of our products and services. Additionally, individuals not subject to invention assignment agreements may make adverse ownership claims to our current and future intellectual property, and, to the extent that our employees, contractors, consultants, or other third parties with whom we do business use intellectual property owned by others in their work for us, disputes may arise as to the rights in related or resulting know-how and inventions.

Effective intellectual property protection may not be available in every country in which we operate or intend to operate our business or offer our products and services, and our intellectual property rights may not receive the same degree of protection in foreign countries as they would in the United States because of the differences in foreign patent, trademark, copyright, and other laws concerning intellectual property and proprietary rights.

Third parties may knowingly or unknowingly infringe, misappropriate, or otherwise violate our intellectual property or other proprietary rights, and particularly as we expand the scope of our business and the countries in which we operate, we may not be able to prevent third parties from infringing, misappropriating, or otherwise violating or challenging our use of, our intellectual property or proprietary rights, including those used to build and distinguish the “Reddit” brand. If the protection of our intellectual property and proprietary rights is inadequate to prevent unauthorized use or appropriation by third parties, the value of our brand and other intangible assets may be diminished and competitors may be able to more effectively mimic our technologies, products, services, features, or methods of operations. We also may be required to spend significant resources to monitor and protect our intellectual property rights. Litigation brought to protect and enforce our intellectual property rights could be costly, time-consuming, and distracting to management and could result in the impairment or loss of portions of our intellectual property. Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential information could be compromised by disclosure during this type of litigation. Our efforts to enforce our intellectual property rights may be met with defenses, counterclaims, and countersuits attacking the validity and enforceability of our intellectual property rights. An adverse outcome in such litigation or proceeding may expose us to a loss of our competitive position, expose us to significant liabilities, or require us to seek licenses that may not be available on commercially acceptable terms, or at all. Any of these events could harm our business, results of operations, financial condition, and prospects.

We have and may in the future, be subject to claims that we violated certain third-party intellectual property rights, which, even where meritless, can be costly to defend and could adversely affect our business, results of operations, financial condition, and prospects.

Our success depends, in part, on our ability to develop and commercialize our products and services without infringing, misappropriating, or otherwise violating the intellectual property rights of third parties. However, we have been and may in the future be, involved in lawsuits and other disputes alleging that we have infringed, misappropriated, or otherwise violated the intellectual property rights of third parties. We may not be aware that our products or services are infringing, misappropriating, or otherwise violating third-party intellectual property rights and such third parties may bring claims alleging such infringement, misappropriation, or violation. For example, the continued use of any AI technologies in our products and services may give rise to risks related to intellectual property infringement. Additionally, companies in the technology industry own large numbers of patents, copyrights, trademarks, and trade secrets and frequently enter into litigation based on allegations of infringement or other violations of intellectual property rights. As we face increasing competition and become increasingly high profile, we have received, and may in the future receive, more intellectual property claims against us. In addition, various “non-practicing entities,” and other intellectual property rights holders have asserted and may attempt to assert in the future, intellectual property claims against us and have sought, and may attempt to seek in the future, to monetize the intellectual property rights they own to extract value through licensing arrangements or other settlements or litigation.

We cannot predict the outcome of lawsuits and cannot ensure that the results of any such actions will not adversely affect our business, results of operations, financial condition, or prospects. We have incurred and may in the future incur, expenses associated with litigation and settlement costs arising out of allegations that we have infringed, misappropriated, or otherwise violated the intellectual property rights of third parties. Any such claims or litigation, even those without merit and regardless of the outcome, could cause us to incur significant expenses, and, if successfully asserted against us, could require that we pay substantial costs or damages, pay significant ongoing royalty payments, pay settlement or licensing fees, prevent us from offering our products or services or using certain technologies, force us to implement expensive work-arounds or re-designs, impose other unfavorable terms, distract management from our business, or satisfy indemnification obligations.

If any of our technologies, products, or services are found to infringe, misappropriate, or otherwise violate a third party’s intellectual property rights, we could be required to obtain a license from such third party to continue commercializing or using such technologies, products, or services. However, we may not be able to obtain any required license on commercially reasonable terms, or at all. Even if we were able to obtain a license, it could be non-exclusive, thereby giving our competitors

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and other third parties access to the same technologies licensed to us, and it could require us to make substantial licensing and royalty payments. We also could be required, including by court order, to cease the commercialization or use of the violating technology, products, or services. Accordingly, we may need to design around such violated intellectual property, which may be expensive, time-consuming, or infeasible. In addition, we could be found liable for significant monetary damages, including treble damages and attorneys’ fees, if we are found to have willfully infringed a patent or other intellectual property right. Claims that we have misappropriated the confidential information or trade secrets of third parties could similarly harm our business. If we are required to make substantial payments or undertake any of the other actions noted above as a result of any intellectual property infringement, misappropriation, or violation claims against us, such payments, costs, or actions could adversely affect our competitive position, business, results of operations, financial condition, and prospects. Even if intellectual property claims do not result in litigation or are resolved in our favor, these claims, and the time and resources necessary to resolve them, could divert the resources of our management and require significant expenditures. Any of the foregoing could prevent us from competing effectively and could have an adverse effect on our business, results of operations, financial condition, and prospects.

Risks Related to Governmental Regulation and Litigation

Our business is subject to increasingly complex and evolving laws, rules, regulations, industry standards, and other legal obligations regarding content, consumer protection, competition, privacy, and other matters. Our existing and future products and services may subject us to additional regulatory requirements that could be costly and difficult to comply with or may subject us to other risks that could result in additional liability, reputational harm, or other consequences that could adversely affect our business, results of operations, financial condition, and prospects.

We are subject to a variety of laws, rules, regulations, industry standards, and other legal obligations in the United States and abroad that involve matters central to our business, including content, intellectual property, rights of publicity and privacy, advertising, machine learning and AI, marketing, distribution, competition, consumer protection, protection of minors, telecommunications, product liability, taxation, economic or other trade prohibitions or sanctions, blockchain, and securities laws. The laws, rules, and regulations applicable to our business are stringent, evolving, and involve matters central to our business, and may be interpreted, applied, created, or amended in a manner that could harm our current or future business and operations.

We expect increasing legal complexity and uncertainty regarding the use and regulation of content made available on platforms such as ours. We have faced, currently face, and will continue to face claims relating to information or content that is published or made available on our platform. In particular, the nature of our business exposes us to claims related to defamation, dissemination of misinformation or news hoaxes, discrimination, harassment, intellectual property rights, rights of publicity and privacy, personal injury torts, laws regulating hate speech or other types of content, online safety, sex trafficking, consumer protection, and breach of contract, among others. In the United States, there have been and will continue to be various U.S. Executive Branch, Congressional, and state-level efforts to regulate the content made available on platforms such as ours, and to restrict the scope of the protections available to online platforms under Section 230 of the Communications Decency Act. Our current protections from liability for content moderation decisions and third-party content posted on our platform in the United States could decrease or change, potentially resulting in increased liability for content moderation decisions and third-party content posted on our platform and higher litigation costs.

We could also face fines, orders restricting or blocking our services in particular geographies, or other government-imposed remedies as a result of content hosted on our services. This risk is enhanced in certain jurisdictions outside of the United States where our protection from liability for third-party actions may be unclear or where we may be less protected under local laws than we are in the United States. Numerous countries in Europe, the Middle East, Asia-Pacific, and Latin America are considering or have implemented legislation and regulations imposing potentially significant penalties, including fines, service throttling, access bans, or advertising bans, for failure to remove certain types of content or follow certain processes. For example, legislation in Germany and India has resulted and may result in the future, in the imposition of fines or other penalties for failure to comply with certain content removal, law enforcement cooperation, and disclosure obligations. Moreover, a recent ruling by Brazil’s Supreme Federal Court regarding the responsibility of online platforms for user-generated content introduces similar legal and compliance risks. Content-related legislation and regulations also have required us and may require us in the future, to change our products or business practices, increase our costs, or otherwise impact our operations or our ability to provide services in certain geographies. For example, the EU Directive on Copyright in the Digital Single Market expands online platform liability for copyright infringement and regulates certain uses of news content online. In addition, the European Union (the “EU”) revised the European Audiovisual Media Service Directive to apply to online video-sharing platforms, which member states were required to implement into national law by December 2020. An Irish regulator has previously designated Reddit as a video-sharing platform service under Ireland’s Online Safety and Media Regulation Act (the “Media Regulation Act”), implementing their version of the directive; while this designation has been rescinded on

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jurisdictional grounds, other EU regulators may designate us as a video-sharing platform service under similar directives in the future. The expansion and complexity of laws and regulations like the Online Safety Acts in the United Kingdom (the “UK”) and Australia, the EU ePrivacy Directive, the EU Digital Services Act, and others across the globe may increase our compliance costs and require changes to our processes and operations. Further, there are regulations aimed at limiting minors’ access to online content, including adult content, or otherwise governing their treatment by online platforms, such as the Online Safety Acts in the UK and Australia. These regulations have and could continue to prevent us from making our services available to certain users in certain jurisdictions, increase our costs of operations, and introduce technological challenges (such as requiring development and implementation of age collection and age or identity verification systems and parental controls), all of which could adversely affect our business, results of operations, financial condition, and prospects.

In addition, the existing and any future regulation of adult content could prevent us from making some of our content available in various states or jurisdictions or otherwise adversely affect our business, results of operations, financial condition, and prospects. For example, the governments of some countries, such as India and Pakistan, have passed laws and regulations restricting the distribution of content and products deemed to represent foreign or “immoral” influences. U.S. government officials could amend or construe and seek to enforce more broadly or aggressively the adult content recordkeeping and labeling requirements set forth in 18 U.S.C. Section 2257 and its implementing regulations in a manner that is unfavorable to our business.

There have been, and will continue to be, legislative and regulatory developments related to imposing new obligations on online platforms with respect to commerce listings, user content, counterfeit goods, and copyright-infringing material. For example, we are exploring different ways for Redditors to purchase and gift virtual goods and receive rewards for contributions to our platform, including through Reddit’s earnings programs for contributors, developers, and creators. These programs may be subject to a variety of laws and regulations in the United States, Europe, and elsewhere, including laws governing money laundering and terrorist financing, money transmission, prepaid access and stored value, electronic funds transfer, marketing of in-app purchases, virtual currency, consumer protection, taxation, unclaimed property, securities, banking and lending, trade sanctions, and import and export restrictions. In some jurisdictions, the application or interpretation of these laws and regulations is not, and in the future may not be, clear. For example, in some situations, the SEC has found the sale of certain virtual goods and non-fungible and fungible tokens to have been securities offerings and has fined issuers and taken other related actions to prohibit the sale and trading of such items. Moreover, to the extent our virtual goods and rewards products are deemed securities, our activities relating to these products could cause us to be required to register as a broker-dealer or exchange.

We also continue to pursue new business initiatives to empower communities through new technologies, including machine learning and AI, blockchain technology, and non-fungible token (“NFT”) standards. These initiatives and technologies are subject to complex and rapidly evolving laws and regulations, and governments and regulatory authorities may disagree with our risk-based judgments about how these laws and regulations apply to our business initiatives, or may enact, interpret, or apply laws and regulations that are inconsistent across jurisdictions. In addition, future legal and regulatory developments related to machine learning and AI, blockchain technology, and NFT standards may negatively impact demand for, and our ability to offer, products and services related to these new technologies. They may also increase our compliance and litigation costs, cause us to change our business practices, and harm our business, results of operations, financial condition, and prospects. To support our business initiatives relying on blockchain technology and NFT standards, including Reddit Collectible Avatars, we have acquired and used, and may continue to acquire and use, certain cryptocurrencies, including Ether and Matic. Collectible Avatars rely on blockchain technology, NFT standards, and cryptocurrencies for their creation, existence, and transactional validation on the blockchain, which exposes them to risks related to cybersecurity, malicious attack, and technological obsolescence. While we believe we have taken reasonable measures to secure our use of blockchain technology and cryptocurrencies, these risks, in addition to human errors and computer malfunctions, may harm or result in the loss of Collectible Avatars, blockchain technology, and cryptocurrencies we control. While we believe blockchain technology has significant potential, long-term adoption is uncertain. New legislation and regulations, law enforcement and regulatory interventions, and judicial decisions may adversely affect blockchain technology and cryptocurrencies, and future adoption of both by consumers and businesses. Developments of this nature may also adversely affect the value of blockchain technology we control, and our ability to buy, sell, accept, and use cryptocurrencies and blockchain technology in the future.

While we have been expanding the use of machine learning across the platform, we have also been exploring the use of generative AI within our platform, as well as the use and licensing of Reddit content for generative AI purposes. For example, we are experimenting with using generative AI to scale our content translation efforts as we grow our presence in international markets, to assist Redditors to find more relevant content and to create post and comment suggestions that abide by community rules. We are also experimenting with using generative AI to assist advertisers to create ads, improve the placement of advertisements on our platform, and strengthen the offerings and functionality of our advertising tools. If we do not have sufficient rights to use the data on which our systems rely, we may incur liability through the violation of such laws, third-party

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privacy or other rights, or contracts to which we are a party. If our use of generative AI results in summaries or translations of content that are inaccurate, dangerous, or otherwise problematic, we may face direct liability for claims such as defamation related to such content without the ability to avail ourselves of intermediary protections. We may not be able to anticipate how to respond to these rapidly evolving frameworks, and we may need to expend resources to adjust our offerings in certain jurisdictions if the legal frameworks are inconsistent across jurisdictions. For example, the EU AI Act came into effect in August 2024 and applies to companies that develop, use, and/or provide AI in the EU and includes requirements around transparency, conformity assessments and monitoring, risk assessments, human oversight, security, and accuracy, and includes substantial penalties for non-compliance. This regulatory framework is expected to have a material impact on the way AI is regulated in the EU, and together with developing guidance and decisions in this area, may affect our use of AI and our ability to provide and to improve our services, require additional compliance measures and changes to our operations and processes, result in increased compliance costs and potential increases in civil claims against us, and could adversely affect our business, results of operations, financial condition, and prospects.

In addition, we are in the early stages of our content licensing efforts and are exploring content licensing opportunities where we believe the opportunity does not conflict with our values and the rights of Redditors. These programs may subject us to evolving approaches to the regulation of this data and implicate complex and developing data privacy and data protection, misappropriation, and intellectual property laws, rules, and regulations. Given the novel nature of these technologies and commercial arrangements, we have received and expect to continue to receive inquiries regarding our content licensing efforts from regulators. For example, in March 2024, we received a letter from the FTC advising us that the FTC’s staff is conducting a non-public inquiry focused on our sale, licensing, or sharing of user-generated content with third parties to train AI models. Given the novel nature of these technologies and commercial arrangements, we are not surprised that the FTC has expressed interest in this area. We do not believe that we have engaged in any unfair or deceptive trade practice, we expect to receive continued regulatory interest in our plans, and any regulatory engagement can be lengthy, unpredictable and may cause us to incur substantial costs. It is possible for any regulatory engagement to result in reputational harm or fines, cause us to discontinue or modify our products, services, features, or functionalities, require us to change our policies or practices, divert management and other resources from our business, or otherwise adversely impact our business, results of operations, financial condition, and prospects.

Our efforts to comply with these laws and regulations could be costly and may still not guarantee compliance. We may also be subject to selective or inconsistent government regulatory action or enforcement or be the subject of claims in private litigation or other actions. In the event that we are found to be in violation of any such legal or regulatory requirements, we may be subject to monetary fines or other penalties or additional regulation and oversight, all of which could significantly increase our operating costs. If any of these risks occurs, our business, results of operations, financial condition, and prospects could be adversely affected.

Although we value privacy at Reddit, we face increasing scrutiny and regulatory complexity with regard to data privacy and data protection. If we fail, or are perceived as failing, to protect the data privacy of those who use or work at Reddit, our business and reputation will suffer and our business, results of operations, financial condition, and prospects could be adversely affected.

We receive, store, handle, transmit, use, and otherwise process personal and business information and other data from and about actual and prospective customers, as well as our employees, Redditors, and service providers. As a result, we and our handling of data are subject to complex and evolving laws, rules, regulations, contractual obligations, and industry standards relating to privacy and data security. In some cases, these laws, rules, and regulations by various federal, state, and foreign governmental authorities and agencies impose obligations directly on us as both a data controller and a data processor (or the equivalents thereof). These laws, rules, and regulations are constantly evolving and may be interpreted, applied, created, or amended in a manner that could harm our current or future business and operations.

In the United States, laws, rules, and regulations governing data privacy and security include those enacted on a federal level, such as the Federal Trade Commission Act, and those enacted by certain states, such as the California Consumer Privacy Act of 2018, as amended by the California Privacy Rights Act (the “CCPA”), and California Age-Appropriate Design Code. Additionally, laws in all 50 U.S. states require businesses to provide notice under certain circumstances to governmental authorities and affected individuals in connection with personal data breaches. Non-compliance with these laws could result in regulatory action, including injunctions and statutory civil penalties, and a private right of action.

Certain state laws may be more stringent or broader in scope, or offer greater individual rights, with respect to sensitive and personal information than federal, international, or other state laws, and such laws may differ from each other, which may complicate compliance efforts. This may result in further legal uncertainty, require us to incur substantial additional costs and expenses in an effort to comply, and potentially require us to modify our data practices and policies.

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The trend towards more stringent privacy legislation creates the potential for a patchwork of overlapping but different laws, which could increase our potential liability and adversely affect our business, results of operations, and financial condition. Such laws and regulations could also restrict our customers’ ability to run their businesses, which may, in turn, impact our business and operations. These laws, rules, and regulations may also impact our ability to expand advertising on our platform internationally, as they may impede our ability to deliver targeted advertising and accurately measure our ad performance.

We are also subject to complex and evolving privacy laws in the EU and the UK, such as the European Union General Data Protection Regulation (the “EU GDPR”) and the United Kingdom General Data Protection Regulation (the “UK GDPR”). The enactment of the EU GDPR and the UK GDPR also introduced numerous privacy-related changes for companies operating in the EU and the UK, including greater control for data subjects (including, for example, the “right to be forgotten”), increased data portability for EU and UK consumers, data breach notification requirements, and increased fines. In particular, fines for certain breaches are significant, up to the greater of 4% of total global annual turnover or €20 million in the EU (£17.5 million under the UK GDPR). Since we are subject to the supervision of the relevant data protection authorities under both the EU GDPR and the UK GDPR, we could be fined under each of these regimes independently in respect of the same breach. In addition to fines, a breach of the relevant regimes could result in litigation, regulatory investigations or inquiries, reputational damage, orders to cease or change our data processing activities, enforcement notices, or assessment notices (for a compulsory audit).

We also expect increasing legal complexity and uncertainty regarding how and under what circumstances we can transfer, process, or receive certain data that is critical to our operations, including data shared between countries or regions in which we operate and data shared among our products and services. These various developments in relation to international personal data transfers require us to implement new or revised documentation and processes, within the relevant time frames, and are subject to ongoing scrutiny and potential future challenge, leading to additional costs and increasing our overall risk exposure. For example, for data transfers to the United States, the European Commission has adopted an adequacy decision for entities self-certified under the new EU-U.S. Data Privacy Framework (“DPF”). The DPF does not apply to the UK, and in October 2023, a UK-U.S. Data Bridge came into force to facilitate transfers of personal data from the UK to the United States. In addition, the other bases upon which we rely to transfer such data, such as Standard Contractual Clauses (“SCCs”), have been subjected to regulatory and judicial scrutiny. The Court of Justice of the EU ruled in July 2020 that reliance on the SCCs alone may not necessarily be sufficient in all circumstances and transfers must be assessed on a case-by-case basis. In June 2021, the European Commission published revised SCCs for data transfers from the EU, but there is some uncertainty around whether the revised SCCs can be relied on for data transfers to non-EU entities subject to the GDPR. The European Commission has stated an intention to publish a new set of SCCs applicable to such transfers to non-EU entities subject to the GDPR. The UK ICO has published its own International Data Transfer Agreement and the International Data Transfer Addendum to the SCCs (the “IDTA”), which came into force in March 2022. If the DPF is invalidated in the future and we are unable to continue to rely on SCCs and the IDTA or validly rely upon other alternative means of data transfers from the EU and the UK to the United States, we may suffer additional costs, complaints or regulatory investigations, inquiries, or fines, and we may be unable to operate material portions of our business in the EU or the UK, and/or stop using certain tools and vendors and make other operational changes, which would harm our business, results of operations, financial condition, and prospects.

There are a number of legislative proposals or recently enacted or evolving laws in the United States, at both the federal and state level, and in the EU and the UK that could impose new obligations or limitations in areas affecting our business. In the EU and the UK, regulators are increasingly focusing on compliance with requirements directed towards the protection of children’s data online. For example, the UK ICO is conducting an investigation regarding Reddit’s use of age assurance measures and compliance with the UK GDPR. Further, EU national laws that implement the ePrivacy Directive (Directive 2002/58/EC concerning the processing of personal data and the protection of privacy in the electronic communications sector) may be replaced by separate, more targeted regulations, which may alter rules on tracking technologies, impose burdensome requirements surrounding obtaining consent and significantly increase fines for non-compliance. If regulators start to enforce an increasingly strict approach, this could lead to substantial costs, require significant systems changes, limit the effectiveness of our marketing activities, divert the attention of our technology personnel, adversely affect our margins, increase costs, and subject us to additional liabilities.

From time to time, governments, regulators, and other third parties have and may in the future, reach out to ask questions or express concerns about whether our products, services, or practices compromise the privacy or data protection rights of Redditors and others. While we strive to comply with applicable laws, rules, and regulations relating to privacy, data protection, and data security, our privacy policies, and other obligations we may have with respect to privacy, data protection, and data security, the failure or perceived failure to comply with such obligations may result in investigations, inquiries, and other proceedings or actions against us by governments, regulators, or other third parties. Additionally, we are currently and may in the future become, involved in data privacy-related litigation or other disputes. A number of proposals have recently been

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adopted or are currently pending before federal, state, and foreign legislative and regulatory bodies that could significantly affect our business and operations.

We make public statements about our use, collection, disclosure, and other processing of personal information through our privacy policies, information provided on our websites, marketing materials and public statements, and in the event that a court or regulator finds these statements to be deceptive, unfair, inaccurate, inadequate, or misrepresentative of our actual practices, we could also be exposed to legal or regulatory liability. Any such proceedings or violations could force us to spend money in defense or settlement, result in the imposition of monetary liability or demanding injunctive relief, divert management’s time and attention, increase our costs of doing business, and adversely affect our reputation. Furthermore, the uncertain and shifting regulatory environment and trust climate may cause concerns regarding privacy and data protection and may cause our customers to resist providing the data necessary to allow them to use our services effectively. In addition, although we endeavor to comply with our public statements and policies, we could at times fail to do so or be perceived to have failed to do so. Even the perception that the privacy of personal information is not satisfactorily protected or does not meet regulatory requirements could negatively impact our business and operations.

We cannot assure you that any third-party providers with access to personal information and other sensitive or confidential information in relation to which we are responsible will not breach contractual obligations imposed by us, or that they will not experience data security breaches or attempts thereof, which could have a corresponding effect on our business, including putting us in breach of our obligations under various data privacy and data protection laws, rules, and regulations, which could in turn adversely affect our business, results of operations, and financial condition. If our customers or third-party providers violate applicable laws, regulations, rules, or standards, or our policies or other privacy or security-related obligations, such violations may also put the information of our customers, third-party providers, or employees at risk. We cannot assure you that our contractual measures and our own privacy and data protection-related safeguards will protect us from the risks associated with the third-party processing, storage, and transmission of such information.

Any failure or perceived failure by us or our third-party providers to comply with our privacy policies, data privacy-related obligations to Redditors or other third parties, or our data privacy-related legal obligations, or any compromise of security that results in the unauthorized release or transfer of personal information or other user data, or other failure or noncompliance by us with applicable laws, rules, regulations, industry standards, or other legal obligations or requirements relating to data privacy and our processing of personal information could subject us to investigations, litigation, sanctions, enforcement actions, disgorgement of profits, substantial fines, damages, reputational harm, a significant diversion of management’s attention and resources, civil and criminal penalties, injunctions, or other collateral consequences, any of which could adversely affect our business, results of operations, financial condition, and prospects.

Pending and future litigation could lead us to incur significant costs and adversely affect our business, results of operations, financial condition, and prospects.

We are, and may become in the future, party to various lawsuits and claims arising in the normal course of business, which may include putative class action suits or other lawsuits or claims relating to privacy and other regulatory matters, user consent, intellectual property and/or open source software, customer matters, our marketing and sales practices, content on our site, contracts, employment matters, or other aspects of our business. For a description of such material litigation, see Note 10—Commitments and Contingencies—Legal Matters and Indemnifications to the consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q. Such lawsuits have in the past and may in the future result in us incurring significant expenses in settlement and litigation costs. Any negative outcome from any such lawsuits or claims could result in payments of substantial monetary damages or fines, or undesirable changes to our products or business practices and, accordingly, our business, results of operations, financial condition, or prospects could be adversely affected. There can be no assurances that a favorable final outcome will be obtained in all our cases, and any lawsuit, even defending unmerited claims, is costly and can impose a significant burden on management and employees. Any litigation to which we are a party may result in an onerous or unfavorable judgment that may not be reversed upon appeal, or in payments of substantial monetary damages or fines, or we may decide to settle lawsuits on similarly unfavorable terms, which could adversely affect our business, results of operations, financial condition, and prospects.

We are subject to governmental export controls and economic sanctions laws that could impair our ability to compete in global markets or subject us to liability if we are not in full compliance with applicable laws.

Our platform is subject to governmental, including U.S. and EU, export control laws and regulations, and as a U.S. company, we are covered by the U.S. sanctions laws and regulations. U.S. export control and economic sanctions laws and regulations prohibit the provision of certain products and services to U.S. embargoed or sanctioned countries, governments, and persons, and complying with export control and sanctions regulations may be time-consuming and may result in the loss of sales opportunities. While we take precautions to prevent our platform from being exported in violation of these laws or

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engaging in any other activities that are subject to these regulations, from time to time, we may fail to fully comply with these laws and regulations. We believe our provision of such services is either in compliance with generally available exemptions from sanctions laws or otherwise in compliance with applicable law, and we have implemented certain control mechanisms designed to prevent unauthorized dealings with U.S. embargoed or sanctioned countries, such as preventing such users from paying for or receiving premium content or features. If such users circumvent these precautions or we are otherwise found to have failed to comply with U.S. export laws, U.S. economic sanctions, and other countries’ import and export laws, we could be subject to substantial civil and criminal penalties, including fines for the company, incarceration for responsible employees and managers, and the possible loss of export or import privileges, and we may incur reputational harm.

Risks Related to Financial and Accounting Matters

Changes in tax laws or tax rulings could adversely affect our effective tax rates, results of operations, and financial condition.

The tax regimes we are subject to or operate under are unsettled and may be subject to significant change. This challenge will continue to increase as we expand our operations globally. Changes in tax laws, issuance of new tax rulings, or changes in interpretations of existing laws could cause us to be subject to additional income-based taxes and non-income-based taxes, including payroll, sales, use, value-added, digital, net worth, property, and goods and services taxes, which in turn could adversely affect our results of operations and financial condition. In particular, the U.S. government may enact significant changes to the taxation of business entities including, among others, an increase in the corporate income tax rate, the imposition of minimum taxes or surtaxes on certain types of income, significant changes to the taxation of income derived from international operations, and an addition of further limitations on the deductibility of business interest. For example, on August 16, 2022, the Inflation Reduction Act (the “IRA”) was signed into law in the United States. Among other changes, the IRA introduced a corporate minimum tax on certain corporations with average annual adjusted financial statement income over a three-tax-year period in excess of $1 billion and an excise tax on certain stock repurchases by certain covered corporations for taxable years beginning after December 31, 2022.

In addition, many countries in the EU, as well as a number of other countries and organizations, have recently proposed or recommended changes to existing tax laws or have enacted new laws that could impact our tax obligations. In particular, over the past several years, the Organisation for Economic Co-operation and Development (“OECD”) has been working on a base erosion and profit shifting (“BEPS”) project. As part of the OECD’s BEPS project, over 140 member jurisdictions of the OECD Inclusive Framework have joined the Two-Pillar Solution to Address the Tax Challenges of the Digitalisation of the Economy, which includes a reallocation of taxing rights among jurisdictions and a global minimum tax rate of 15%. The Council of the European Union has approved its directive to implement rules regarding such a 15% global minimum tax rate, and other jurisdictions have already enacted taxes that target technology companies. We are unable to predict what changes to the tax laws of the United States and other jurisdictions may be proposed or enacted in the future or what effect such changes would have on our business. Any of these or similar developments or changes to tax laws or rulings could adversely affect our effective tax rate and our results of operations and financial condition.

We may have exposure to greater than anticipated tax liabilities.

The tax laws applicable to our business, including the laws of the United States and other jurisdictions, are subject to interpretation and certain jurisdictions are aggressively interpreting their laws in new ways in an effort to raise additional tax revenue. We are subject to taxation in several non-U.S. jurisdictions with increasingly complex tax laws, the application of which can be uncertain. The number of jurisdictions where we are subject to tax will increase as we expand our global operations. The amount of taxes paid in these jurisdictions could substantially change as a result of changes in the applicable tax principles, including increased tax rates, new tax laws, or revised interpretations of existing tax laws and precedent, which could have an adverse impact on our liquidity and results of operations. The relevant taxing authorities in a jurisdiction may disagree with our determinations regarding the income and expense attributable to that jurisdiction. If such a disagreement were to occur, and our position was not sustained, we could be required to pay additional taxes, interest, and penalties, which could result in one-time or ongoing tax charges, higher effective tax rates, reduced cash flows, and lower overall profitability of our business.

Our existing corporate structure has been implemented in a manner that we believe is in compliance with current prevailing tax laws, and our transfer pricing policies account for the functions, risks, and assets of the various entities involved in our intercompany transactions. The taxing authorities for the jurisdictions in which we operate may, however, challenge our methodologies for valuing intercompany arrangements, which could impact our worldwide effective tax rate and adversely affect our financial condition and results of operations. Moreover, changes to our corporate structure, including increased headcount and expanded functions outside of the United States, could impact our worldwide effective tax rate and adversely affect our financial condition and results of operations. Significant judgment is required in evaluating our tax positions and our

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worldwide provisions for taxes. During the ordinary course of business, there are many activities and transactions for which the ultimate tax determination is uncertain. The relevant taxing authorities may disagree with our determinations as to the income and expenses attributable to specific jurisdictions. If such a disagreement were to occur, and our position were not sustained, we could be required to pay additional taxes, interest, and penalties, which could result in one-time tax charges, higher effective tax rates, reduced cash flows, and lower overall profitability of our business, with some changes possibly affecting our tax obligations in future or past years.

Our ability to use net operating loss carryforwards and other tax attributes may be limited due to certain provisions of the Internal Revenue Code or state tax law.

We have incurred substantial losses during our history. Under the Tax Cuts and Jobs Act, federal net operating loss carryforwards (“NOLs”) we generated in tax years through December 31, 2017, may be carried forward for 20 years and may fully offset taxable income in the year utilized, and federal NOLs we generated in tax years beginning after December 31, 2017, may be carried forward indefinitely but may only be used to offset 80% of our taxable income annually.

As of December 31, 2024, we had U.S. federal NOL carryforwards of approximately $590.4 million and state NOL carryforwards of approximately $399.9 million available to offset future taxable income. Our state NOL carryforwards will begin to expire in 2025 if not utilized. Our federal NOL carryforwards can be carried forward indefinitely, with utilization limited to 80% of our taxable income. Realization of these NOL carryforwards depends on future taxable income, and there is a risk that our existing carryforwards could expire unused and be unavailable to offset future taxable income, which could adversely affect our results of operations.

Under Sections 382 and 383 of the Internal Revenue Code, if a corporation undergoes an “ownership change,” the corporation’s ability to use its pre-change federal NOLs and other tax attributes (such as tax credits) to offset its post-change income and taxes may be limited. In general, an “ownership change” occurs if there is a greater than 50 percentage point change (by value) in a corporation’s equity ownership by certain stockholders over a rolling three-year period. We may have experienced ownership changes in the past and may experience ownership changes in the future as a result of subsequent shifts in our stock ownership (some of which shifts are outside our control). As a result, our ability to use our pre-change federal NOLs and other tax attributes to offset future taxable income and taxes could be subject to limitations. Similar provisions of state tax law may also apply. For these reasons, we may be unable to use a material portion of our NOLs and other tax attributes, which could adversely affect our business, results of operations, financial condition, and prospects.

If we fail to maintain an effective system of disclosure controls and internal control over financial reporting, our ability to produce timely and accurate financial statements or comply with applicable regulations could be impaired.

As a public reporting company, we are subject to the rules and regulations established by the Securities and Exchange Commission (the "SEC"), the Sarbanes-Oxley Act, and the listing rules of the New York Stock Exchange (“NYSE”). These rules and regulations require, among other things, that we establish and periodically evaluate procedures with respect to our internal control over financial reporting. Reporting obligations as a public company place a considerable strain on our financial and management systems, processes, and controls, as well as on our personnel, including senior management. In addition, as a public company, we will be required, pursuant to Section 404 of the Sarbanes-Oxley Act (“Section 404”), to furnish a report by management on, among other things, the effectiveness of our internal control over financial reporting commencing with our annual report on Form 10-K for the fiscal year ending December 31, 2025. This assessment will need to include disclosure of any material weaknesses in our internal control over financial reporting identified by our management. We have commenced the costly and challenging process of compiling the system and processing documentation necessary to perform the evaluation needed to comply with Section 404, but we may not be able to complete our evaluation, testing, and any required remediation in a timely fashion once initiated. In addition, our independent registered public accounting firm will be required to provide an attestation report on the effectiveness of our internal control over financial reporting. We anticipate that we will continue investing significant resources to enhance and maintain our financial and managerial controls, reporting systems, and procedures.

Our current controls and any new controls that we develop may become inadequate because of changes in conditions in our business. During the evaluation and testing process of our internal controls, if we identify one or more material weaknesses in our internal control over financial reporting, we will be unable to certify that our internal control over financial reporting is effective. If our management is unable to certify the effectiveness of our internal controls, our independent registered public accounting firm is unable to express an unqualified opinion on the effectiveness of our internal control over financial reporting, we identify or fail to remediate material weaknesses in our internal controls, or we do not effectively or accurately report our financial performance to the appropriate regulators on a timely basis, we could be subject to regulatory scrutiny and a loss of investor confidence, which could adversely affect our business, results of operations, financial condition, and prospects, and could cause the market price of our Class A common stock to decline.

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Our revolving credit facility contains restrictive and financial covenants that may limit our operational flexibility. If we fail to meet our obligations under the credit facility, our operations may be interrupted and our business, results of operations, financial condition, and prospects could be adversely affected.

In October 2021, we entered into a five-year, $750.0 million revolving credit facility by and among us and certain lenders to fund working capital and general corporate purpose expenditures, which was further amended in May 2023. In July 2025, we renewed and amended this revolving credit facility for $500.0 million accessible through July 1, 2030 (the “Amended Revolving Credit Facility”). The Amended Revolving Credit Facility contains customary conditions to borrowing, events of default, and covenants. Covenants include restrictions on our and certain of our subsidiaries’ ability to incur indebtedness, grant liens, make distributions to holders of our capital stock or the capital stock of our subsidiaries, make investments, or engage in transactions with our affiliates, and require us to adhere to a maximum leverage ratio. The obligations under the Amended Revolving Credit Facility are secured by liens on substantially all of our assets, including intellectual property assets.

Various risks, uncertainties, and events beyond our control could affect our ability to comply with these covenants. Failure to comply with any of the covenants could result in a default under the Amended Revolving Credit Facility. Such a default could permit lenders to accelerate the maturity of outstanding amounts under our Amended Revolving Credit Facility, if any, which in turn could result in material adverse consequences that negatively impact our business, the market price for our Class A common stock, and our ability to obtain other financing in the future. In addition, our Amended Revolving Credit Facility’s covenants, consent requirements, and other provisions may limit our flexibility to pursue or fund strategic initiatives or acquisitions that might be in the long-term interests of us and stockholders.

We might require additional capital to support business growth, and this capital might not be available on terms favorable to us, or at all.

We intend to continue to make investments to support our business growth and may require additional funds to respond to business challenges and opportunities, including the need to develop new products or services, enhance our existing products or services, enhance our operating infrastructure, expand internationally, and acquire complementary businesses and technologies. In order to achieve these objectives, we may make future commitments of capital resources. Accordingly, we may need to engage in equity or debt financings to secure additional funds. If we raise additional funds through further issuances of equity or convertible debt securities, our existing stockholders could suffer significant dilution, and any new equity securities we issue could have rights, preferences, and privileges superior to those of holders of our common stock. In addition, the incurrence of indebtedness would increase our fixed obligations, and include covenants or other restrictions that would impede our ability to manage our operations. Further, if additional financing is needed, we may not be able to obtain additional financing on terms favorable to us, or at all. Our inability to obtain adequate financing or financing on terms satisfactory to us, when we require it, could significantly limit our ability to continue supporting our business growth and responding to business challenges and opportunities.

Future acquisitions and investments could disrupt our business and harm our business, results of operations, financial condition, and prospects.

As part of our business strategy, we have made and intend to make acquisitions to expand our products and services, and grow our business in response to changing technologies, Redditor and advertiser demands, and competitive pressures.

Our previous and future acquisitions may not achieve our goals, and we may not realize benefits from acquisitions we make in the future. Any acquisitions, including the integration process, will require significant time and resources, and we may not be able to manage the process successfully. If we fail to successfully integrate acquisitions, or the personnel or technologies associated with those acquisitions, our business, results of operations, financial condition, and prospects could be harmed. Our acquisition strategy may change over time and future acquisitions we complete could be viewed negatively by users, advertisers, investors, or other parties with whom we do business. We may not successfully evaluate or utilize the acquired technology and accurately forecast the financial impact of an acquisition, including accounting charges. We may also incur unanticipated liabilities that we assume as a result of acquiring companies. Future acquisitions could also result in dilutive issuances of our equity securities, the incurrence of debt, contingent liabilities, amortization expenses, incremental operating expenses, or the impairment of goodwill, any of which could harm our business, results of operations, financial condition, and prospects.

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Risks Related to Ownership of Our Class A Common Stock

The market price of our Class A common stock may be volatile, regardless of our underlying business, our results of operations, macroeconomic conditions, or industry fundamentals, and we may not be able to meet investor or analyst expectations.

The market price of our Class A common stock may fluctuate or decline significantly in response to numerous factors, many of which are beyond our control, including:

•actual or anticipated fluctuations in Redditor growth, retention, and engagement, revenue, or other results of operations;

•variations between our actual results of operations and the expectations of securities analysts, investors, and the financial community;

•changes in accounting standards or the application of existing or future accounting standards;

•whether we provide financial guidance or projections;

•any forward-looking financial or operating information we may provide to the public or securities analysts, any changes in this information, or our failure to meet expectations based on this information;

•actions of securities analysts who initiate or maintain coverage of us, changes in financial estimates by any securities analysts who follow our company, or our failure to meet these estimates or the expectations of investors;

•any significant changes in our management or board of directors;

•investors’ or analysts’ views of our stock structure and the voting agreements entered into with certain of our stockholders;

•additional shares of our Class A common stock being sold into the market by us or our existing stockholders, or the anticipation of such sales, including the sale of shares to satisfy RSU-related tax obligations or if existing stockholders sell shares into the market;

•announcements by us or our competitors of significant products or features, technical innovations, acquisitions, strategic partnerships, joint ventures, or capital commitments;

•announcements by us or estimates by third parties of actual or anticipated changes in the size of our DAUq or related level of engagement;

•changes in operating performance and stock market valuations of technology companies in our industry, including our competitors;

•rumors and market speculation involving us or other companies in our industry;

•price and volume fluctuations in the overall stock market, including as a result of trends in the economy as a whole;

•litigation threatened or filed against us, companies in our industry or both, or investigations by regulators into our operations or those of our competitors;

•developments in new legislation and pending lawsuits or regulatory actions, including interim or final rulings by judicial or regulatory bodies; and

•other events or factors, including those resulting from political instability, regional conflicts around the world, war or incidents of terrorism, or responses to these events.

In addition, the stock market in general, and the market for technology companies in particular, has experienced significant price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of those companies. Moreover, in the past, following periods of volatility in the overall market and the market prices of a particular company’s securities, securities class action litigation has often been instituted against that company. We are currently subject to stockholder litigation, as described in Note 10—Commitments and Contingencies—Legal Matters and Indemnifications to the consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q, and may be subject to additional

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such cases in the future. Securities litigation against us could result in substantial costs and divert our management’s attention and resources from our business.

Interest in our Class A common stock from retail and other individual investors, for reasons unrelated to our underlying business or macroeconomic or industry fundamentals, could result in increased volatility in the market price of our Class A common stock. For example, in 2021 and in June 2024, the market prices and trading volumes of certain securities, such as GameStop Corp., AMC Entertainment Holdings, Inc., and other “meme” stocks, experienced extreme volatility. The rapid and substantial increases or decreases in the market prices of “meme” stocks may be unrelated to the respective issuer’s operating performance or macroeconomic or industry fundamentals, and the substantial increases may be significantly inconsistent with the risks and uncertainties that the issuer faces. This volatility has been attributed, in part, to strong and atypical retail investor interest, including as may be expressed on financial trading and other social media sites and online forums such as r/ wallstreetbets, one of our subreddits. Given the broad awareness and brand recognition of Reddit, including as a result of the popularity of r/ wallstreetbets among retail investors, and the direct access by retail investors to broadly available trading platforms, the market price and trading volume of our Class A common stock could experience extreme volatility for reasons unrelated to our underlying business or macroeconomic or industry fundamentals, which could cause you to lose all or part of your investment.

The multi-class structure of our common stock has the effect of concentrating voting control with those stockholders who held our capital stock prior to the listing of our Class A common stock on the NYSE. This ownership will limit or preclude your ability to influence corporate matters, including the election of directors, amendments of our organizational documents, and any major corporate transaction requiring stockholder approval, including change of control transactions.

Our Class B common stock has ten votes per share, our Class A common stock has one vote per share, and our Class C common stock has no votes per share. Because of the ten-to-one voting ratio between our Class B and Class A common stock, the holders of our Class B common stock collectively continue to control a significant percentage of the combined voting power of our common stock and therefore are able to control all matters submitted to our stockholders for approval until a substantial number of such outstanding shares of Class B common stock have converted into shares of our Class A common stock. Furthermore, in connection with our initial public offering, Steven Huffman, our Chief Executive Officer and President and a member of our board of directors, entered into a voting agreement with each of (i) Advance Magazine Publishers Inc. ("Advance") and (ii) Tencent Cloud Europe B.V. and Jojoba Investment Limited that provides, among other things, that Mr. Huffman is entitled to vote all of the securities beneficially owned by such stockholders and certain of their affiliates, in Mr. Huffman’s sole discretion, on all matters submitted to a vote of our stockholders, subject to certain exceptions. We estimate as of June 30, 2025, pursuant to such voting agreements, Mr. Huffman was entitled to vote shares representing approximately 74% of the voting power of our outstanding Class A and Class B common stock. As a result, we are eligible to be a “controlled company” under the rules of NYSE, which exempts companies from certain corporate governance rules relating to the independence of the board of directors and its committees. Although we are eligible to use these exemptions, we do not currently expect to avail ourselves of any of these exemptions. However, if we were to use some or all of these exemptions in the future, investors may not have the same protections afforded to stockholders of companies that are subject to all of the corporate governance requirements of NYSE and our “controlled company” status could make our Class A common stock less attractive to some investors or otherwise adversely affect its trading price. In addition, pursuant to the terms of the voting agreement with Advance, Mr. Huffman is also entitled to vote all of the securities beneficially owned by Advance in favor of directors designated by Advance and director candidates nominated or identified by Mr. Huffman.

This concentrated control will limit or preclude your ability to influence corporate matters for the foreseeable future, including the election of directors, amendments of our organizational documents, and any merger, consolidation, sale of all or substantially all of our assets, or other major corporate transaction requiring stockholder approval. In addition, this may prevent or discourage unsolicited acquisition proposals or offers for our capital stock that you may feel are in your best interests as one of our stockholders.

Future transfers by holders of our Class B common stock will generally result in those shares converting to Class A common stock, subject to limited exceptions, as set forth in our amended and restated certificate of incorporation, including transfers to family members, certain trusts for estate planning purposes, entities under common control with or controlled by such holder of our Class B common stock, and, with respect to Advance, any Advance Entity (as such term is defined in our amended and restated certificate of incorporation). The conversion of Class B common stock to Class A common stock will have the effect, over time, of increasing the relative voting power of those holders of our Class B common stock who retain their shares. In addition, the conversion of Class B common stock to Class A common stock would dilute holders of Class A common stock, in terms of voting power within the Class A common stock. Any future issuances of common stock would also be dilutive to holders of Class A common stock. For example, because our Class C common stock carries no voting rights (except as otherwise required by law), if we issue Class C common stock in the future, the holders of Class B common stock

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may be able to hold significant voting control over most matters submitted to a vote of our stockholders for a longer period of time than would be the case if we issued Class A common stock rather than Class C common stock in such transactions. In addition, subject to the approval rights granted to Advance pursuant to our amended and restated certificate of incorporation, following the date on which no shares of our Class B common stock remain outstanding, upon the date and time or occurrence of an event specified by the vote of holders of a majority of the then-outstanding shares of our Class A common stock, each share of Class C common stock shall automatically convert into one share of our Class A common stock.

Certain stock index providers have excluded companies with multiple classes of shares of common stock from being added to certain stock indices. Accordingly, the multi-class structure of our common stock would make us ineligible for inclusion in indices with such restrictions and, as a result, mutual funds, exchange-traded funds, and other investment vehicles that attempt to passively track those indices may not invest in our Class A common stock.

In addition, several stockholder advisory firms and large institutional investors have been critical of the use of multi-class structures. Such stockholder advisory firms may publish negative commentary about our corporate governance practices or our capital structure, which may dissuade large institutional investors from purchasing shares of our Class A common stock. These actions could make our Class A common stock less attractive to other investors and may result in a less active trading market for our Class A common stock.

Our amended and restated certificate of incorporation and the governance agreement that we entered into with our principal stockholder grant our principal stockholder certain rights with respect to the control and management of our business, which may prevent us from taking actions that may be beneficial to us and our other stockholders.

In connection with our initial public offering, we entered into a governance agreement with Advance, our principal stockholder, and Mr. Huffman, our Chief Executive Officer and President and a member of our board of directors (the “Governance Agreement”). Pursuant to our amended and restated certificate of incorporation and the Governance Agreement, Advance has the right to designate two directors and one nonvoting board observer, and any increase in the size of our board of directors that would cause our board of directors to consist of more than ten members is subject to Advance’s prior written approval. Subject to certain limitations set forth in our amended and restated certificate of incorporation, we also require Advance’s prior written approval or consent to, among other things:

•establish any new class of securities or issue securities which, in the aggregate, represent more than 10% of the voting power of the securities beneficially owned by Advance and certain of its affiliates as of the completion of our initial public offering;

•amend our amended and restated certificate of incorporation or amended and restated bylaws, if such amendment would adversely affect Advance’s rights thereunder;

•effect or consummate a change of control transaction or any other merger, consolidation, business combination, sale, or acquisition that changes the rights or preferences of our security holders;

•effect the liquidation, dissolution, or winding up of our business operations;

•terminate, reduce, or enlarge the responsibilities of, or elect, appoint, or remove, our Chief Executive Officer; or

•submit to our stockholders any proposal to effect the conversion of all then-outstanding shares of our Class C common stock into an equivalent number of fully paid and non-assessable shares of Class A common stock, as set forth in our amended and restated certificate of incorporation or otherwise.

The Governance Agreement will terminate upon the first to occur of (i) such date that Advance and certain of its affiliates cease to, in the aggregate, beneficially own at least 5% of the aggregate of the then-outstanding shares of our Class A and Class B common stock, (ii) the date when (x) Advance and certain of its affiliates cease to, in the aggregate, beneficially own at least 50% of the number of outstanding securities held by Advance as of the completion of our initial public offering and (y) the then-outstanding shares of Class B common stock, in the aggregate, represent less than 7.5% of the aggregate of the then-outstanding shares of our Class A and Class B common stock, or (iii) the date that either we or Advance experience a change of control. Following the termination of the Governance Agreement, the approval, control, and board and committee designation rights granted to Advance pursuant to our amended and restated certificate of incorporation will no longer be exercisable.

Accordingly, for so long as the Governance Agreement remains effective in accordance with its terms, Advance will have significant influence with respect to our management, business plans, and policies. In particular, Advance may be able to cause or prevent a change in the composition of our board of directors, the appointment, the scope of duties of, or termination of our Chief Executive Officer, or a change of control of our company. Additionally, the consent of Advance and Mr. Huffman, for so

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long as he remains Chief Executive Officer, will be required to elect the chairperson of our board of directors. These restrictions could deprive you of an opportunity to receive a premium for your shares of Class A common stock as part of a sale of our company and ultimately might affect the market price of our Class A common stock.

Future sales and issuances of our Class A common stock or rights to purchase our Class A common stock, including pursuant to our equity incentive plans, or other equity securities or securities convertible into our Class A common stock, could result in additional dilution of the percentage ownership of our stockholders and could cause the market price of our Class A common stock to decline.

Sales or issuances of a substantial number of shares of our Class A common stock, other series of common stock, convertible securities, or other equity securities in the public market, or the perception that these sales or issuances might occur in large quantities, could cause the market price of our Class A common stock to decline, could dilute investors, and could impair our ability to raise capital through the sale of additional equity securities. As of June 30, 2025, we had 131,962,529 shares of Class A common stock outstanding, 55,112,126 shares of Class B common stock outstanding, no shares of Class C common stock outstanding, and no shares of preferred stock outstanding.

Certain stockholders owning shares of our common stock are entitled, under our amended and restated investors’ rights agreement, to certain rights with respect to the registration of their Class A common stock, including shares of Class A common stock issuable upon conversion of shares of Class B common stock under the Securities Act of 1933 as amended, (the “Securities Act”). Any registration statement we file to register additional shares, whether as a result of registration rights or otherwise, could cause the market price of our Class A common stock to decline or be volatile.

Further, as of June 30, 2025, we had 11,865,483 options outstanding that, if fully exercised, would result in the issuance of 10,136,166 shares of Class A common stock and 1,729,317 shares of Class B common stock, as well as 7,092,011 shares of Class A common stock and 523,340 shares of Class B common stock issuable upon vesting of outstanding RSUs and PRSUs, which have been registered on Form S-8 under the Securities Act. These shares can be freely sold in the public market upon issuance, subject to applicable vesting requirements, compliance by affiliates with Rule 144, and other restrictions provided under the terms of the applicable plan and/or the award agreements entered into with participants. In addition, we have filed and may in the future file registration statements covering shares of our common stock issued pursuant to our equity incentive plans permitting the resale of such shares by non-affiliates in the public market without restriction under the Securities Act and the sale by affiliates in the public market subject to compliance with the resale provisions of Rule 144.

Sales, short sales, or hedging transactions involving our equity securities, whether or not we believe them to be prohibited, could adversely affect the price of our Class A common stock. These sales also could cause the market price of our Class A common stock to fall and make it more difficult for you to sell shares of our Class A common stock.

If industry or financial analysts do not publish research or reports about our business, or if they issue inaccurate or unfavorable research regarding our Class A common stock, the trading volume and market price of our Class A common stock could decline.

The trading market for our Class A common stock is influenced by research and reports that industry or financial analysts publish about us or our business. If one or more of these analysts ceases coverage of our company or fails to publish reports on us regularly, we could lose visibility in the financial markets, which in turn could cause the market price or trading volume of our Class A common stock to decline. Moreover, if our financial results fail to meet, or exceed, our announced guidance or the expectations of analysts or public investors, one or more of the analysts who cover our company may publish unfavorable research about us, and the market price of our Class A common stock could decline.

We do not intend to pay dividends in the foreseeable future. As a result, your ability to achieve a return on your investment will depend on appreciation in the market price of our Class A common stock.

We have never declared or paid any cash dividends on shares of our capital stock and we do not anticipate paying any dividends in the foreseeable future. Any determination to pay dividends in the future will be at the discretion of our board of directors. Additionally, our ability to pay dividends is limited by restrictions on our ability to pay dividends or make distributions under the terms of our Amended Revolving Credit Facility. Accordingly, investors must for the foreseeable future rely on sales of their Class A common stock after price appreciation, which may never occur, as the only way to realize any future gains on their investments.

Anti-takeover provisions contained in our amended and restated certificate of incorporation and amended and restated bylaws, as well as provisions of Delaware law, could impair a takeover attempt.

69

Our amended and restated certificate of incorporation and amended and restated bylaws contain, and the General Corporation Law of the State of Delaware (the “Delaware General Corporation Law”) contains, provisions which could have the effect of rendering more difficult, delaying, or preventing an acquisition deemed undesirable by our board of directors. These provisions provide for the following:

•a multi-class structure which provides our holders of Class B common stock with the ability to significantly influence the outcome of matters requiring stockholder approval, even if they own significantly less than a majority of the shares of our outstanding Class A, Class B, and Class C common stock;

•no cumulative voting in the election of directors, which limits the ability of minority stockholders to elect director candidates;

•the exclusive right of our board of directors to establish the size of the board of directors and to appoint a director to fill a vacancy, however occurring, including by expanding the board of directors, subject to the rights granted to Advance pursuant to our amended and restated certificate of incorporation;

•the ability of our board of directors to authorize the issuance of shares of preferred stock and to determine the price and other terms of those shares, including voting or other rights or preferences, without stockholder approval, subject to the rights granted to Advance pursuant to our amended and restated certificate of incorporation, which could be used to significantly dilute the ownership of a hostile acquiror;

•the ability of our board of directors to alter our amended and restated bylaws without obtaining stockholder approval, subject to the rights granted to Advance pursuant to our amended and restated certificate of incorporation;

•a majority or class voting requirement to amend certain provisions in our amended and restated certificate of incorporation and a supermajority or class voting requirement to amend our amended and restated bylaws;

•the requirement that a special meeting of stockholders may be called only by the chairperson of our board of directors (if any), our Chief Executive Officer, our board of directors pursuant to a resolution adopted by a majority of our board of directors, or, if at such time the holders of shares of our Class B common stock beneficially own, in the aggregate, at least 30% of the voting power of all of the then-outstanding shares of our capital stock, our Secretary, following his or her receipt of one or more written demands to call a special meeting from stockholders of record as of the applicable record date who hold, in the aggregate, at least 30% of the voting power of all of the then-outstanding shares of our capital stock;

•at any time when the holders of our Class B common stock hold less than 30% of the voting power of all of the then-outstanding shares of our capital stock, the requirement that any action to be taken by our stockholders be effected at a duly called annual or special meeting and not by written consent;

•advance notice procedures that stockholders must comply with in order to nominate candidates to our board of directors or to propose matters to be acted upon at a stockholders’ meeting, which may discourage or deter a potential acquiror from conducting a solicitation of proxies to elect the acquiror’s own slate of directors or otherwise attempting to obtain control of us; and

•the limitation of liability of, and provision of indemnification to, our directors and officers.

These provisions, alone or together, could delay or prevent hostile takeovers and changes in control or changes in our management.

In addition, we have opted out of Section 203 of the Delaware General Corporation Law, but our amended and restated certificate of incorporation provides that the restrictions contained in Section 203 will apply to us immediately following the time at which all of the following conditions exist (if ever): (i) Section 203 by its terms would, but for the provisions of our amended and restated certificate of incorporation, apply to us; (ii) Advance and its affiliates and associates beneficially own less than 15% of the voting power of the then-outstanding shares of our common stock, and (iii) the Governance Agreement has terminated in accordance with its terms. Moreover, our amended and restated certificate of incorporation provides that, unless and until these conditions all exist, we will be governed by provisions substantially similar to Section 203. These provisions and Section 203 each prevent some stockholders holding more than 15% of our outstanding common stock from engaging in certain business combinations with us without the approval of the holders of substantially all of our outstanding common stock; provided, however, that unless and until we are governed by Section 203, Advance and its affiliates and associates will not be prohibited from engaging in such business combinations with us.

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Any provision of our amended and restated certificate of incorporation, amended and restated bylaws, or the Delaware General Corporation Law that has the effect of delaying or deterring a change in control could limit the opportunity for our stockholders to receive a premium for their shares of our common stock, and could also affect the price that some investors are willing to pay for our common stock.

Claims for indemnification by our directors and officers may reduce our available funds to satisfy successful third-party claims against us and may reduce the amount of money available to us.

Our amended and restated certificate of incorporation and amended and restated bylaws provide that we will indemnify our directors and officers, in each case to the fullest extent permitted by the Delaware General Corporation Law.

In addition, as permitted by Section 145 of the Delaware General Corporation Law, our amended and restated bylaws and our indemnification agreements that we have entered or intend to enter into with our directors and officers, provide that:

•we will indemnify our directors and officers to the fullest extent permitted by the Delaware General Corporation Law. The Delaware General Corporation Law provides that a corporation may indemnify such person if such person acted in good faith and in a manner such person reasonably believed to be in or not opposed to the best interests of the registrant and, with respect to any criminal proceeding, had no reasonable cause to believe such person’s conduct was unlawful;

•we may, in our discretion, indemnify employees and agents in those circumstances where indemnification is permitted by applicable law;

•we are required to advance expenses, as incurred, to our directors and officers in connection with defending a proceeding, except that such directors or officers will undertake to repay such advances if it is ultimately determined that such person is not entitled to indemnification;

•the rights conferred in our amended and restated bylaws are not exclusive, and we are authorized to enter into indemnification agreements with our directors, officers, employees, and agents and to obtain insurance to indemnify such persons; and

•we may not retroactively amend our amended and restated bylaw provisions to reduce our indemnification obligations to directors, officers, employees, and agents.

While we have obtained directors’ and officers’ liability insurance policies, such insurance policies may not be available to us in the future at a reasonable rate, may not cover all potential claims for indemnification, and may not be adequate to indemnify us for all liability that may be imposed. Additionally, given the significant increase in the costs of directors’ and officers’ insurance policies recently, we may subsequently decide to select lower overall policy limits or forgo insurance altogether that we would otherwise rely upon to cover applicable defense costs, settlements and damages awards.

Our amended and restated certificate of incorporation and amended and restated bylaws provide for an exclusive forum in the Court of Chancery of the State of Delaware for certain disputes between us and our stockholders, and that the federal district courts of the United States is the exclusive forum for the resolution of any complaint asserting a cause of action under the Securities Act.

Our amended and restated certificate of incorporation and amended and restated bylaws provide, that: (i) unless we consent in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware (or, if such court does not have subject matter jurisdiction thereof, the federal district court of the State of Delaware) is, to the fullest extent permitted by law, the sole and exclusive forum for: (A) any derivative action or proceeding brought on our behalf, (B) any action asserting a claim for, or based on, a breach of a fiduciary duty owed by any of our current or former directors, officers, other employees, agents, or stockholders to us or our stockholders including, without limitation, a claim alleging the aiding and abetting of such a breach of fiduciary duty, (C) any action asserting a claim against us or any of our current or former directors, officers, employees, agents, or stockholders arising pursuant to any provision of the Delaware General Corporation Law, our certificate of incorporation or bylaws, our amended and restated certificate of incorporation or amended and restated bylaws, or as to which the Delaware General Corporation Law confers jurisdiction on the Court of Chancery of the State of Delaware, or (D) any action asserting a claim related to or involving us that is governed by the internal affairs doctrine; (ii) unless we consent in writing to the selection of an alternative forum, the federal district courts of the United States is, to the fullest extent permitted by law, the sole and exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act, and the rules and regulations promulgated thereunder, although there is uncertainty as to whether a court would enforce this provision; (iii) any person or entity purchasing or otherwise acquiring or holding any interest in shares of our capital stock will be deemed to have notice of and consented to these provisions; and (iv) failure to enforce the foregoing provisions would cause us irreparable harm, and we will be entitled to equitable relief, including injunctive relief and specific performance, to

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enforce the foregoing provisions. Nothing in our amended and restated certificate of incorporation or amended and restated bylaws precludes stockholders that assert claims solely under the Exchange Act, from bringing such claims in federal court to the extent that the Exchange Act confers exclusive federal jurisdiction over such claims, subject to applicable law.

The choice of forum provisions may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or any of our current or former directors, officers, other employees, agents, or stockholders, which may discourage such claims against us or any of our current or former directors, officers, other employees, agents, or stockholders and result in increased costs for investors to bring such a claim. We believe these provisions may benefit us by providing increased consistency in the application of the Delaware General Corporation Law and federal securities laws by chancellors and judges, as applicable, particularly experienced in resolving corporate disputes, efficient administration of cases on a more expedited schedule relative to other forums, and protection against the burdens of multi-forum litigation. If a court were to find the choice of forum provision contained in our amended and restated certificate of incorporation or our amended and restated bylaws to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could adversely affect our business, results of operations, financial condition, and prospects.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

(a)

None.

(b)

Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

(c)

Rule 10b5-1 Trading Plans

During the three months ended June 30, 2025, the directors or “officers” (as defined in Rule 16a-1(f) under the Exchange Act) listed below adopted, modified, or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K:

On May 9, 2025, our Chief Technology Officer, Christopher Slowe, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) for the sale of up to 350,000 shares of our Class A common stock. The trading plan will terminate at the earlier of the execution of all trading orders pursuant to the plan or August 20, 2026.

On May 16, 2025, our Chief Operating Officer, Jennifer Wong, individually and through a trust for which she is a trustee, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) for the sale of up to 714,656 shares of our Class A common stock. The actual number of shares subject to the Rule 10b5-1 trading arrangement is expected to be different due to our withholding of certain shares to satisfy tax withholding obligations in connection with the vesting of restricted stock units. The trading plan will terminate at the earlier of the execution of all trading orders pursuant to the plan or August 19, 2026.

On May 19, 2025, our Chief Executive Officer and Director, Steven Huffman, through a trust for which he is a trustee, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) for the sale of up to 450,000 shares of our Class A common stock. The trading plan will terminate at the earlier of the execution of all trading orders pursuant to the plan or August 31, 2026. As of June 30, 2025, the shares subject to Mr. Huffman’s trading plan represent 4.44% of his outstanding common stock and equity awards.

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On June 3, 2025, our Chief Financial Officer, Andrew Vollero, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) for the sale of up to 30,000 shares of our Class A common stock. The trading plan will terminate at the earlier of the execution of all trading orders pursuant to the plan or November 14, 2025.

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Item 6. Exhibits

Exhibit Number	Exhibit Description	Incorporated by Reference			Filed Herewith
		Form	Filing Date	Number
3.1	Amended and Restated Certificate of Incorporation	8-K	3/25/2024	3.1
3.2	Amended and Restated Bylaws	8-K	3/25/2024	3.2
4.1	Reference is made to Exhibits 3.1 and 3.2
4.2	Form of Class A Common Stock Certificate	S-1/A	3/11/2024	4.2
4.3	Form of Class B Common Stock Certificate	S-8	3/21/2024	4.6
4.4	Amended and Restated Investors’ Rights Agreement, dated September 1, 2021, by and among the Registrant and the investors listed therein	S-1	2/22/2024	10.1
31.1	Certification of Principal Executive Officer Pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002				X
31.2	Certification of Principal Financial Officer Pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002				X
32.1	Certifications of Principal Executive Officer and Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002				X
101.INS	Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because XBRL tags are embedded within the Inline XBRL document				X
101.SCH	Inline XBRL Taxonomy Extension Schema Document				X
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document				X
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document				X
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document				X
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document				X
104.0	Cover Page Interactive Data File (embedded within the Inline XBRL document)				X

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	REDDIT, INC.
Dated: July 31, 2025	By:	/s/ Andrew Vollero
	Name:	Andrew Vollero
	Title:	Chief Financial Officer (Principal Financial Officer)

75

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO

RULES 13a-14(a) AND 15d-14(a) UNDER

THE SECURITIES EXCHANGE ACT OF 1934, AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven Huffman, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Reddit, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)[Reserved];

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: July 31, 2025

/s/ Steven Huffman

Steven Huffman

Chief Executive Officer

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO

RULES 13a-14(a) AND 15d-14(a) UNDER

THE SECURITIES EXCHANGE ACT OF 1934, AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Andrew Vollero, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Reddit, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)[Reserved];

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: July 31, 2025

/s/ Andrew Vollero

Andrew Vollero

Chief Financial Officer

(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Reddit, Inc. (the “Company”) on Form 10-Q for the period ended June 30, 2025 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned hereby certifies, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, as amended, that:

1.The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 as amended; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: July 31, 2025

/s/ Steven Huffman

Steven Huffman

Chief Executive Officer

(Principal Executive Officer)

Date: July 31, 2025

/s/ Andrew Vollero

Andrew Vollero

Chief Financial Officer

(Principal Financial Officer)

XML

Cover - shares	6 Months Ended
	Jun. 30, 2025	Jul. 30, 2025
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2025
Document Transition Report	false
Entity File Number	001-41983
Entity Registrant Name	Reddit, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-2546501
Entity Address, Address Line One	303 2nd Street
Entity Address, Address Line Two	South Tower
Entity Address, Address Line Three	5th Floor
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94107
City Area Code	415
Local Phone Number	494-8016
Title of 12(b) Security	Class A common stock, par value $0.0001 per share
Trading Symbol	RDDT
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
CIK	0001713445
Amendment Flag	false
Class A common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		134,585,853
Class B common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		52,570,328
Class C common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 734,060	$ 562,092
Marketable securities	1,325,881	1,278,717
Accounts receivable, net	407,228	349,534
Prepaid expenses and other current assets	62,761	33,058
Total current assets	2,529,930	2,223,401
Property and equipment, net	11,394	12,652
Operating lease right-of-use assets, net	22,118	23,249
Intangible assets, net	20,469	25,424
Goodwill	42,174	42,174
Other noncurrent assets	6,117	9,695
Total assets	2,632,202	2,336,595
Current liabilities:
Accounts payable	63,942	45,423
Operating lease liabilities	6,572	6,137
Accrued expenses and other current liabilities	140,317	124,464
Total current liabilities	210,831	176,024
Operating lease liabilities, noncurrent	18,611	20,565
Other noncurrent liabilities	15,780	9,257
Total liabilities	245,222	205,846
Commitments and contingencies (Note 10)
Stockholders’ equity (deficit):
Preferred stock, par value $0.0001 per share; 100,000,000 shares authorized as of June 30, 2025 and December 31, 2024; no shares issued and outstanding as of June 30, 2025 and December 31, 2024	0	0
Additional paid-in capital	3,468,618	3,331,546
Accumulated other comprehensive income (loss)	3,727	24
Accumulated deficit	(1,085,383)	(1,200,838)
Total stockholders’ equity (deficit)	2,386,980	2,130,749
Total liabilities and stockholders’ equity (deficit)	2,632,202	2,336,595
Class A common stock
Stockholders’ equity (deficit):
Common stock, value	13	12
Class B common stock
Stockholders’ equity (deficit):
Common stock, value	5	5
Class C common stock
Stockholders’ equity (deficit):
Common stock, value	$ 0	$ 0

XML

Consolidated Balance Sheets (Parentheticals) - $ / shares	Jun. 30, 2025	Dec. 31, 2024
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Class A common stock
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares issued (in shares)	131,962,529	125,001,880
Common stock, shares outstanding (in shares)	131,962,529	125,001,880
Class B common stock
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	140,000,000	140,000,000
Common stock, shares issued (in shares)	55,112,126	55,314,099
Common stock, shares outstanding (in shares)	55,112,126	55,314,099
Class C common stock
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	0	0
Common stock, shares outstanding (in shares)	0	0

XML

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Revenue	$ 499,627	$ 281,184	$ 891,988	$ 524,147
Costs and expenses:
Cost of revenue	45,900	29,501	82,989	57,117
Research and development	196,610	142,777	387,881	579,807
Sales and marketing	120,619	71,458	211,304	195,553
General and administrative	68,787	68,487	138,200	311,964
Total costs and expenses	431,916	312,223	820,374	1,144,441
Income (loss) from operations	67,711	(31,039)	71,614	(620,294)
Other income (expense), net	21,147	20,724	41,681	35,278
Income (loss) before income taxes	88,858	(10,315)	113,295	(585,016)
Income tax expense (benefit)	(439)	(216)	(2,160)	149
Net income (loss)	$ 89,297	$ (10,099)	$ 115,455	$ (585,165)
Net income (loss) per share attributable to Class A and Class B common stock (Note 4)
Basic (in dollars per share)	$ 0.48	$ (0.06)	$ 0.63	$ (4.99)
Diluted (in dollars per share)	$ 0.45	$ (0.06)	$ 0.58	$ (4.99)
Weighted-average shares of Class A and Class B common stock used to compute net income (loss) per share attributable to common stockholders
Basic (in shares)	185,437,777	164,382,736	183,730,992	117,311,614
Diluted (in shares)	199,522,433	164,382,736	200,681,458	117,311,614

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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 89,297	$ (10,099)	$ 115,455	$ (585,165)
Other comprehensive income (loss), net of tax:
Change in unrealized gains (losses) on marketable securities	(158)	(528)	185	(1,800)
Change in foreign currency translation adjustment	2,571	(4)	3,518	(18)
Net comprehensive income (loss)	$ 91,710	$ (10,631)	$ 119,158	$ (586,983)

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Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Conversion Of Redeemable Convertible Preferred Stock To Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Conversion Of Redeemable Convertible Preferred Stock To Common Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Class A	Class A Common Stock	Class A Common Stock Conversion Of Class B Common Stock To Class A Common Stock	Class A Common Stock Conversion Of Redeemable Convertible Preferred Stock To Common Stock	Class B	Class B Conversion Of Class B Common Stock To Class A Common Stock	Class B Common Stock	Class B Common Stock Conversion Of Class B Common Stock To Class A Common Stock	Class B Common Stock Conversion Of Redeemable Convertible Preferred Stock To Common Stock
Beginning balance (in shares) at Dec. 31, 2023	73,021,449
Beginning balance at Dec. 31, 2023	$ 1,853,492
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering (in shares)	(73,021,449)
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering	$ (1,853,492)
Ending balance (in shares) at Jun. 30, 2024	0
Ending balance at Jun. 30, 2024	$ 0
Beginning balance (in shares) at Dec. 31, 2023								7,099,700					53,904,204
Beginning balance at Dec. 31, 2023	(412,922)		$ 302,820		$ 814	$ (716,562)		$ 0					$ 6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options, net (in shares)								3,394,138					813,648
Issuance of common stock upon exercise of stock options, net	24,932		24,932
Issuance of common stock upon settlement of restricted stock units, net (in shares)								8,162,928					661,497
Issuance of common stock upon settlement of restricted stock units, net	(202,852)		(202,853)					$ 1
Conversion of stock (in shares)									20,142,152	5,104,017				(20,142,152)	67,917,432
Conversion of stock		$ 1,853,494		$ 1,853,486					$ 2	$ 1		$ 0		$ (2)	$ 7
Issuance of common stock in connection with initial public offering, net of underwriting discounts and commissions and other offering costs (in shares)								18,576,527
Issuance of common stock in connection with initial public offering, net of underwriting discounts and commissions and other offering costs	576,268		576,266					$ 2
Stock-based compensation expense	641,774		641,774
Vesting of early exercised stock options	124		124
Net income (loss)	(585,165)					(585,165)
Change in other comprehensive income (loss)	(1,818)				(1,818)
Ending balance (in shares) at Jun. 30, 2024								62,479,462					103,154,629
Ending balance at Jun. 30, 2024	$ 1,893,835		3,196,549		(1,004)	(1,301,727)		$ 6					$ 11
Ending balance (in shares) at Jun. 30, 2024	0
Ending balance at Jun. 30, 2024	$ 0
Beginning balance (in shares) at Mar. 31, 2024								44,286,735					119,059,756
Beginning balance at Mar. 31, 2024	1,838,300		3,130,384		(472)	(1,291,628)		$ 4					$ 12
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options, net (in shares)								252,962					7,700
Issuance of common stock upon exercise of stock options, net	1,843		1,843
Issuance of common stock upon settlement of restricted stock units, net (in shares)								1,989,556					37,382
Conversion of stock (in shares)									15,950,209					(15,950,209)
Conversion of stock		$ 2		$ 1					$ 2			0		$ (2)	$ 1
Stock-based compensation expense	64,266		64,266
Vesting of early exercised stock options	55		55
Net income (loss)	(10,099)					(10,099)
Change in other comprehensive income (loss)	(532)				(532)
Ending balance (in shares) at Jun. 30, 2024								62,479,462					103,154,629
Ending balance at Jun. 30, 2024	$ 1,893,835		3,196,549		(1,004)	(1,301,727)		$ 6					$ 11
Beginning balance (in shares) at Dec. 31, 2024	0
Beginning balance at Dec. 31, 2024	$ 0
Ending balance (in shares) at Jun. 30, 2025	0
Ending balance at Jun. 30, 2025	$ 0
Beginning balance (in shares) at Dec. 31, 2024							125,001,880	125,001,880			55,314,099		55,314,099
Beginning balance at Dec. 31, 2024	$ 2,130,749		3,331,546		24	(1,200,838)		$ 12					$ 5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options, net (in shares)	2,819,924							1,363,474					1,456,450
Issuance of common stock upon exercise of stock options, net	$ 14,487		14,487
Issuance of common stock upon settlement of restricted stock units, net (in shares)								3,904,250					34,502
Issuance of common stock upon settlement of restricted stock units, net	(51,898)		(51,899)					$ 1
Conversion of stock (in shares)									1,692,925					(1,692,925)
Conversion of stock									$ 0			$ 0		$ 0
Stock-based compensation expense	174,484		174,484
Net income (loss)	115,455					115,455
Change in other comprehensive income (loss)	3,703				3,703
Ending balance (in shares) at Jun. 30, 2025							131,962,529	131,962,529			55,112,126		55,112,126
Ending balance at Jun. 30, 2025	$ 2,386,980		3,468,618		3,727	(1,085,383)		$ 13					$ 5
Ending balance (in shares) at Jun. 30, 2025	0
Ending balance at Jun. 30, 2025	$ 0
Beginning balance (in shares) at Mar. 31, 2025								129,145,465					55,121,821
Beginning balance at Mar. 31, 2025	2,217,121		3,390,469		1,314	(1,174,680)		$ 13					$ 5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options, net (in shares)								358,393					629,769
Issuance of common stock upon exercise of stock options, net	4,303		4,303
Issuance of common stock upon settlement of restricted stock units, net (in shares)								1,801,956					17,251
Issuance of common stock upon settlement of restricted stock units, net	(15,224)		(15,224)					$ 0
Conversion of stock (in shares)									656,715					(656,715)
Stock-based compensation expense	89,070		89,070
Net income (loss)	89,297					89,297
Change in other comprehensive income (loss)	2,413				2,413
Ending balance (in shares) at Jun. 30, 2025							131,962,529	131,962,529			55,112,126		55,112,126
Ending balance at Jun. 30, 2025	$ 2,386,980		$ 3,468,618		$ 3,727	$ (1,085,383)		$ 13					$ 5

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities
Net income (loss)	$ 89,297	$ (10,099)	$ 115,455	$ (585,165)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,934	3,770	7,897	7,513
Non-cash operating lease cost	1,514	1,335	2,982	2,588
Amortization of premium (accretion of discount) on marketable securities, net	(6,691)	(11,362)	(15,575)	(19,491)
Stock-based compensation expense	89,070	64,266	174,484	641,774
Other adjustments	97	141	(41)	626
Changes in operating assets and liabilities:
Accounts receivable	(81,116)	(24,793)	(57,757)	5,194
Prepaid expenses and other assets	(9,352)	(6,270)	(26,358)	(20,182)
Operating lease right-of-use assets and liabilities	(1,589)	(780)	(3,369)	(1,310)
Accounts payable	19,991	18,220	18,945	16,042
Accrued expenses and other liabilities	6,176	(6,043)	22,246	12,860
Net cash provided by (used in) operating activities	111,331	28,385	238,909	60,449
Cash flows from investing activities
Purchases of property and equipment	(505)	(1,202)	(1,484)	(4,053)
Purchases of marketable securities	(556,457)	(861,827)	(1,061,303)	(997,512)
Maturities of marketable securities	552,532	343,404	1,017,594	596,059
Proceeds from sale of marketable securities	0	0	12,372	0
Other investing activities	2,354	(12)	3,243	(27)
Net cash provided by (used in) investing activities	(2,076)	(519,637)	(29,578)	(405,533)
Cash flows from financing activities
Proceeds from issuance of Class A common stock in initial public offering, net of underwriting discounts and commissions	0	0	0	600,022
Proceeds from exercise of employee stock options	4,303	1,843	14,487	24,932
Taxes paid related to net share settlement of restricted stock units	(15,225)	(7,569)	(51,900)	(202,306)
Payments of initial public offering costs	0	(3,585)	0	(6,338)
Other financing activities	0	0	0	(4,450)
Net cash provided by (used in) financing activities	(10,922)	(9,311)	(37,413)	411,860
Net increase (decrease) in cash, cash equivalents, and restricted cash	98,333	(500,563)	171,918	66,776
Cash, cash equivalents, and restricted cash at the beginning of the period	635,727	968,565	562,142	401,226
Cash, cash equivalents, and restricted cash at the end of the period	734,060	468,002	734,060	468,002
Cash and cash equivalents	734,060	467,952	734,060	467,952
Restricted cash	0	50	0	50
Total cash, cash equivalents, and restricted cash	734,060	468,002	734,060	468,002
Supplemental disclosure of noncash financing and investing activities
Conversion of convertible preferred stock to common stock upon initial public offering	0	0	0	1,853,492
Reclassification of deferred offering costs to additional paid-in capital upon initial public offering	$ 0	$ 0	$ 0	$ 23,754

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Description of Business

6 Months Ended

Jun. 30, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business

1. Description of Business

Description of Business

Reddit, Inc. (“Reddit,” “we,” “our,” or “us”) was incorporated in the state of Delaware. Our mission is to empower communities and make their knowledge accessible to everyone. We built Reddit with the belief that communities unlock the power of human creativity and create a sense of belonging and empowerment for their members. We believe the world needs community more than ever, and that this represents our greatest opportunity to further enrich the lives of everyone in the world. We are headquartered in San Francisco, California, and have several offices around the world.

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Basis of Presentation and Significant Accounting Policies

6 Months Ended

Jun. 30, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation and Significant Accounting Policies

2. Basis of Presentation and Significant Accounting Policies

Basis of Presentation of Unaudited Interim Financial Information

Our consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) regarding interim financial information. Our consolidated financial statements include the accounts of Reddit, Inc. and our wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Certain information and disclosures normally included in the annual consolidated financial statements prepared in accordance with U.S. GAAP have been omitted. Accordingly, the unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2024, as filed with the SEC on February 13, 2025 (our “Annual Report”). The unaudited interim consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and reflect, in our opinion, all the adjustments of a normal, recurring nature that are necessary for the fair statement of our financial position, results of operations, and cash flows for the interim periods, but are not necessarily indicative of the results expected for the full year or any other period.

Other than as described below, there have been no changes to our significant accounting policies described in the “Notes to the Consolidated Financial Statements” included in our audited consolidated financial statements and related notes as of and for the year ended December 31, 2024 included in our Annual Report that have had a material impact on our consolidated financial statements and accompanying notes.

Use of Estimates

The preparation of the unaudited consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements and accompanying notes. Management’s estimates are based on historical information available as of the date of the consolidated financial statements and various other assumptions that we believe are reasonable under the circumstances. Actual results could differ materially from those estimates.

Significant estimates relate primarily to determining the fair value of stock-based awards, the fair value of assets and liabilities assumed in business combinations, and the incremental borrowing rate used to determine operating lease right-of-use assets and lease liabilities. On an ongoing basis, management evaluates our estimates compared to historical experience and trends, which form the basis for making judgments about the carrying value of assets and liabilities.

Functional Currency

Generally, the U.S. dollar is the functional currency for our subsidiaries, and therefore, foreign currency denominated monetary assets and liabilities are remeasured into U.S. dollars at exchange rates at the balance sheet date and foreign currency denominated non-monetary assets and liabilities are remeasured into U.S. dollars at historical exchange rates. Gains or losses from foreign currency remeasurement and settlements are included in other income (expense), net in the consolidated statements of operations. For those foreign subsidiaries where the local currency is the functional currency, we translate the financial statements to U.S. dollars at exchange rates at the balance sheet date for assets and liabilities and at monthly average exchange rates for revenues and expenses. Translation gains and losses are recorded in accumulated other comprehensive income (loss) as a component of stockholders’ equity (deficit). Net foreign exchange gains and losses were not material for the three and six months ended June 30, 2025 and 2024.

Concentration of Credit Risk

Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash and cash equivalents, restricted cash, marketable securities, and accounts receivable. We maintain cash and cash equivalents with several financial institutions. We believe that the financial institutions that hold our cash and cash equivalents are financially sound and, accordingly, minimal credit risks exist with respect to these balances. We maintain investments in U.S. and non-U.S. government securities, investment-grade corporate and government agency securities, certificates of deposit, commercial paper, and money market accounts that carry high credit ratings and accordingly, minimal credit risk exists with respect to these balances.

Recently Adopted Accounting Pronouncements

In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which requires an entity to disclose specific categories in the effective tax rate reconciliation as well as provide additional information for reconciling items that meet a quantitative threshold. This standard also requires certain disaggregated disclosures related to income from continuing operations, income tax expense, and income taxes paid. We adopted this standard effective January 1, 2025. Adoption of this standard will result in additional disclosures in our annual consolidated financial statements, but did not impact these unaudited interim consolidated financial statements.

Accounting Pronouncements Not Yet Adopted

In November 2024, the FASB issued ASU No. 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires an entity to disclose disaggregated information about certain income statement expense line items. The standard is effective for us beginning January 1, 2027, with early adoption permitted. We are currently evaluating the impact the adoption will have on our disclosures.

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Revenue

6 Months Ended

Jun. 30, 2025

Revenue from Contract with Customer [Abstract]

Revenue

3. Revenue

The following table represents our revenue disaggregated by source:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Advertising revenue	$	464,785	$	253,125	$	823,415	$	475,807
Other revenue	34,842		28,059		68,573		48,340
Total revenue	$	499,627	$	281,184	$	891,988	$	524,147

The following table represents our revenue disaggregated by geography based on the billing address of the customer:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
United States	$	408,842	$	228,069	$	722,694	$	427,872
Rest of world(1)	90,785		53,115		169,294		96,275
Total revenue	$	499,627	$	281,184	$	891,988	$	524,147

______________

(1)Other than the United States, no individual country represented 10% or more of total revenue during the three and six months ended June 30, 2025 and 2024.

Deferred revenue was $18.9 million and $14.9 million as of June 30, 2025 and December 31, 2024, respectively. For the six months ended June 30, 2025, revenue recognized from the deferred revenue balance at the beginning of the period was $14.0 million. For the six months ended June 30, 2024, revenue recognized from the deferred revenue balance at the beginning of the period was not material.

As of June 30, 2025, the aggregate amount of remaining performance obligations in contracts with an original expected duration exceeding one year was $194.9 million. This amount consists primarily of long-term content licensing contracts and excludes deferred revenue related to short-term advertising contracts and Reddit Premium subscriptions. We expect to recognize $57.0 million in the remainder of 2025, $113.8 million in 2026, and $24.1 million in 2027.

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Net Income (Loss) per Share

6 Months Ended

Jun. 30, 2025

Earnings Per Share [Abstract]

Net Income (Loss) per Share

4. Net Income (Loss) per Share

We compute net income (loss) per share of Class A and Class B common stock using the two-class method required for multiple classes of common stock and participating securities. Prior to our initial public offering (“IPO”) in March 2024, our participating securities included Series A, Series A-1, Series B, Series C, Series D, Series D-1, Series E, Series F, and Series F-1 convertible preferred stock, as the holders of these series of preferred stock were entitled to receive noncumulative dividends subject to certain requirements at an annual rate of 8% of the respective original issue price then in effect in the event that a dividend was paid on common stock.

In connection with our IPO, our Series A, Series A-1, Series B, Series C, Series D, Series D-1, Series E, and Series F preferred stock converted on a one-to-one basis into 67,917,432 shares of Class B common stock, and our Series F-1 preferred stock converted on a one-to-one basis into 5,104,017 shares of Class A common stock. For the three and six months ended June 30, 2024, these shares are weighted in the denominator of net income (loss) per share for Class A and Class B common stock for the portion of the time outstanding subsequent to our IPO.

The following table presents the calculation of basic and diluted net income (loss) per share attributable to common stock:

	Three months ended June 30,								Six months ended June 30,
	2025				2024				2025				2024
	Class A		Class B		Class A		Class B		Class A		Class B		Class A		Class B
	(in thousands, except share and per share data)
Basic net income (loss) per share attributable to common stockholders:
Numerator:
Net income (loss) attributable to common stockholders	$	62,806	$	26,491	$	(3,034)	$	(7,065)	$	80,803	$	34,652	$	(151,229)	$	(433,936)
Denominator:
Basic weighted-average common shares outstanding	130,426,589		55,011,188		49,386,912		114,995,824		128,586,761		55,144,231		30,317,800		86,993,814
Basic income (loss) per share attributable to common stockholders	$	0.48	$	0.48	$	(0.06)	$	(0.06)	$	0.63	$	0.63	$	(4.99)	$	(4.99)
Diluted net income (loss) per share attributable to common stockholders:
Numerator:
Net income (loss) attributable to common stockholders	$	64,676	$	24,621	$	(3,034)	$	(7,065)	$	83,730	$	31,725	$	(151,229)	$	(433,936)
Denominator:
Basic weighted-average common shares outstanding	130,426,589		55,011,188		49,386,912		114,995,824		128,586,761		55,144,231		30,317,800		86,993,814
Weighted-average effect of dilutive potential common stock	14,084,656		—		—		—		16,950,466		—		—		—
Shares used in computation of diluted net income (loss) per share attributable to common stockholders	144,511,245		55,011,188		49,386,912		114,995,824		145,537,227		55,144,231		30,317,800		86,993,814
Diluted net income (loss) per share attributable to common stockholders	$	0.45	$	0.45	$	(0.06)	$	(0.06)	$	0.58	$	0.58	$	(4.99)	$	(4.99)

The following outstanding potentially dilutive shares, including stock options that have been exercised prior to vesting, were excluded from the computation of diluted net income (loss) per share attributable to common stock for the periods presented because the impact of including them would have been anti-dilutive.

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	Class A	Class B	Class A	Class B	Class A	Class B	Class A	Class B
Stock options	—	—	19,090,416	6,410,374	—	—	19,090,416	6,410,374
Unvested RSUs and RSAs	433,058	—	12,620,086	1,335,312	126,137	—	12,620,086	1,335,312
	433,058	—	31,710,502	7,745,686	126,137	—	31,710,502	7,745,686

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Fair Value Measurements

6 Months Ended

Jun. 30, 2025

Fair Value Disclosures [Abstract]

Fair Value Measurements

5. Fair Value Measurements

Fair value is defined as the price that would be received to sell an asset in an orderly transaction between market participants at the measurement date. To increase the comparability of fair value measures, the following hierarchy prioritizes the inputs to valuation methodologies used to measure fair value:

•Level 1: Quoted market prices in active markets for identical assets or liabilities

•Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data

•Level 3: Unobservable inputs reflecting the reporting entity’s own assumptions or external inputs from inactive markets

We classify our cash equivalents and marketable securities within Level 1 or Level 2 because we use quoted market prices or alternative pricing sources and models utilizing market observable inputs to determine their fair value. There were no transfers between levels during the periods presented.

The following table sets forth our financial assets that are measured at fair value on a recurring basis:

		June 30, 2025
	Fair value hierarchy level	Cost or amortized cost		Gross unrealized gains		Gross unrealized losses		Fair value
		(in thousands)
Cash equivalents:
Money market funds	Level 1	$	621,940	$	—	$	—	$	621,940
U.S. treasury securities	Level 1	19,967		—		—		19,967
Certificates of deposit	Level 2	25,397		—		—		25,397
Marketable securities:
U.S. treasury securities	Level 1	665,971		899		(70)		666,800
U.S. agency bonds	Level 2	301,916		77		(207)		301,786
Corporate bonds	Level 2	239,906		586		(16)		240,476
Commercial paper	Level 2	116,831		6		(18)		116,819
Total		$	1,991,928	$	1,568	$	(311)	$	1,993,185

		December 31, 2024
	Fair value hierarchy level	Cost or amortized cost		Gross unrealized gains		Gross unrealized losses		Fair value
		(in thousands)
Cash equivalents:
Money market funds	Level 1	$	497,461	$	—	$	—	$	497,461
U.S. treasury securities	Level 1	5,979		2		—		5,981
Corporate bonds	Level 2	1,066		2		—		1,068
Marketable securities:
U.S. treasury securities	Level 1	817,996		1,120		(396)		818,720
U.S. agency bonds	Level 2	117,965		15		(62)		117,918
Corporate bonds	Level 2	159,424		400		(86)		159,738
Commercial paper	Level 2	182,264		99		(22)		182,341
Total		$	1,782,155	$	1,638	$	(566)	$	1,783,227

Gross unrealized losses within accumulated other comprehensive income (loss) were immaterial as of June 30, 2025 and December 31, 2024. There were no impairment charges due to credit losses during the three and six months ended June 30, 2025 and 2024.

As of June 30, 2025, the amortized cost of marketable securities with maturities less than one year was $820.4 million. The amortized cost of marketable securities with maturities between one and five years was $504.3 million.

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Balance Sheet Components

6 Months Ended

Jun. 30, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Balance Sheet Components

6. Balance Sheet Components

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following:

	June 30, 2025		December 31, 2024
	(in thousands)
Prepaid expenses	$	23,290	$	14,583
Other receivables	26,876		11,500
Interest receivable	9,089		4,695
Other	3,506		2,280
Total prepaid expenses and other current assets	$	62,761	$	33,058

Property and Equipment, Net

Property and equipment, net consisted of the following:

	June 30, 2025		December 31, 2024
	(in thousands)
Computer equipment, furniture, and fixtures	$	16,880	$	15,832
Leasehold improvements	8,051		8,017
Construction-in-progress	63		—
Total property and equipment	24,994		23,849
Less: accumulated depreciation	(13,600)		(11,197)
Total property and equipment, net	$	11,394	$	12,652

Depreciation expense was immaterial for the three and six months ended June 30, 2025 and 2024.

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:

	June 30, 2025		December 31, 2024
	(in thousands)
Accrued compensation and benefits	$	56,042	$	63,441
Deferred revenue	18,826		14,805
Accrued expenses	49,108		31,817
Accrued revenue share payable and other	7,493		6,939
Other	8,848		7,462
Total accrued expenses and other current liabilities	$	140,317	$	124,464

Other Noncurrent Liabilities

Other noncurrent liabilities consisted of the following:

	June 30, 2025		December 31, 2024
	(in thousands)
Accrued customer incentives	$	15,632	$	9,100
Other	148		157
Total other noncurrent liabilities	$	15,780	$	9,257

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Acquisitions

6 Months Ended

Jun. 30, 2025

Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]

Acquisitions

7. Acquisitions

2024 Acquisition

On July 15, 2024, we completed an acquisition to enhance our technology and workforce. The aggregate purchase consideration was $19.9 million, which consisted of $17.1 million of cash consideration and $2.8 million related to the fair value of equity consideration. Additional consideration with a fair value of $10.7 million was determined to relate to post-combination expenses, primarily stock-based compensation for future employment services.

Of the aggregate purchase consideration, $4.3 million was allocated to developed technology with a useful life of three years, $15.9 million was allocated to goodwill, and the remainder was allocated to other assets acquired and liabilities assumed. The goodwill amount represents synergies from utilizing the acquired technology across our business and from the assembled workforce. Goodwill recorded in connection with the acquisition is not deductible for income tax purposes.

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Goodwill and Intangible Assets

6 Months Ended

Jun. 30, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

8. Goodwill and Intangible Assets

Goodwill

The carrying amount of goodwill was $42.2 million as of December 31, 2024. There was no change in the carrying amount of goodwill during the six months ended June 30, 2025.

Acquired Intangible Assets

Acquired intangible assets consisted of the following:

	June 30, 2025
	Gross carrying value		Accumulated amortization		Net carrying value		Weighted-average remaining useful life (years)
	(in thousands, except year data)
Developed technology	$	47,460	$	27,007	$	20,453	2.1
Other intangible assets	600		600		—		—
Total acquired intangible assets	$	48,060	$	27,607	$	20,453

	December 31, 2024
	Gross carrying value		Accumulated amortization		Net carrying value		Weighted-average remaining useful life (years)
	(in thousands, except year data)
Developed technology	$	47,460	$	22,051	$	25,409	2.6
Other intangible assets	600		600		—		—
Total acquired intangible assets	$	48,060	$	22,651	$	25,409

Amortization expense was immaterial for the three and six months ended June 30, 2025 and 2024.

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Debt

6 Months Ended

Jun. 30, 2025

Debt Disclosure [Abstract]

Debt

9. Debt

Revolving Line of Credit

On October 8, 2021, we entered into a five-year, $750.0 million, revolving loan and standby letter of credit facility agreement (“Revolving Credit Facility”) of which $100.0 million can be issued as letters of credit. As of June 30, 2025, we have issued two letters of credit, one of which is denominated in a foreign currency, for an aggregate of $5.2 million, which reduced the letter of credit borrowings available under the Revolving Credit Facility to $94.8 million. The aggregate available balance under the Revolving Credit Facility was $744.8 million as of June 30, 2025.

On May 23, 2023, we amended the terms of the Revolving Credit Facility to replace LIBOR with Term SOFR as the interest rate benchmark. Under the amended terms of the Revolving Credit Facility, borrowings can be either ABR Loans, Term Benchmark Loans, or SONIA Loans. Outstanding ABR Loans bear interest at a rate equal to the greatest of (A) the Prime Rate, (B) the NYFRB Rate plus 0.5%, (C) the Adjusted Term SOFR Rate plus 1.0%, or (D) 1.0% (each as defined in the amended Revolving Credit Facility), in each case plus 0.25%. Outstanding Term Benchmark Loans bear interest at the Adjusted Term SOFR Rate, the Adjusted EURIBOR Rate, or the Adjusted AUD Rate (each as defined in the amended Revolving Credit Facility), as applicable, in each case, plus 1.25%. Outstanding SONIA Loans bear interest at a rate equal to the Adjusted Daily Simple SONIA (as such term is defined in the amended Revolving Credit Facility) plus 1.25%. We are required to pay a quarterly commitment fee that accrues at 0.15% per annum on the unused portion of the aggregate commitments under the credit facility.

The Revolving Credit Facility contains customary conditions on our borrowings, including events of default and covenants. Covenants include restrictions on our and certain of our subsidiaries’ ability to incur indebtedness, grant liens, make distributions to holders of our preferred and common stock, make investments, or engage in transactions with our affiliates, and require us to maintain a minimum liquidity. The obligations under the Revolving Credit Facility are secured by liens on

substantially all of our assets, including intellectual property assets. We were in compliance with all covenants as of June 30, 2025.

On July 1, 2025, we signed a renewal of the Revolving Credit Facility, which amended and restated certain terms of the agreement. Under the amended terms of the Revolving Credit Facility (“Amended Revolving Credit Facility”), we will have access to a five-year, $500.0 million, revolving loan and standby letter of credit facility, of which $100.0 million can be issued as letters of credit and another $100.0 million of which can be borrowed in certain non-U.S. dollar currencies. The Amended Revolving Credit Facility also includes some changes to other terms, primarily relating to interest rates and covenants, from the Revolving Credit Facility.

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Commitment and Contingencies

6 Months Ended

Jun. 30, 2025

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

10. Commitments and Contingencies

Purchase Obligations

We enter into contracts with non-cancellable purchase obligations, primarily related to third-party cloud infrastructure agreements under which we are granted access to certain cloud services. During the six months ended June 30, 2025, there were no material changes outside the normal course of business to the purchase obligations as disclosed in the audited consolidated financial statements as of and for the year ended December 31, 2024 included in the Annual Report.

Legal Matters and Indemnifications

From time to time, we may become involved in various legal and regulatory proceedings, claims or purported class actions related to, among other things, alleged infringement of third party patents and other intellectual property rights, commercial, corporate and securities, labor and employment, wage and hour and other claims arising in the normal course of business. We record a loss contingency when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. We also disclose material contingencies when we believe a loss is not probable but reasonably possible.

In June 2025, we and certain of our officers and directors were named as defendants in a securities class action lawsuit in the U.S. District Court for the Northern District of California. The lawsuit is brought on behalf of a purported class of purchasers or acquirers of our securities, alleging that we and certain of our officers made false or misleading statements and omissions concerning the impact of Google Search and its AI Overviews feature on our business. The complaint seeks unspecified damages and attorneys’ fees. Subsequently, shareholder derivative complaints with similar allegations were filed in the U.S. District Court for the Northern District of California against the Company, its directors, and members of our senior management. No responses to these complaints have been filed. Based on the preliminary nature of the proceedings in these cases, the outcome of these matters remains uncertain.

Accounting for contingencies requires us to use judgment related to both the likelihood of a loss and the estimate of the amount or range of loss. We are not aware of any other pending matters, individually or in the aggregate, that are expected to have a material adverse impact on our results of operations, financial position, or cash flows as of June 30, 2025. Legal fees and other expenses associated with such matters are expensed as incurred.

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Stockholders' Equity (Deficit)

6 Months Ended

Jun. 30, 2025

Equity [Abstract]

Stockholders' Equity (Deficit)

11. Stockholders' Equity (Deficit)

Common Stock Reserved for Issuance

In February 2024, our board of directors adopted the 2024 Incentive Award Plan (the “2024 Plan”), which became effective in connection with the IPO. Under the 2024 Plan, shares of our Class A common stock are reserved for issuance pursuant to a variety of stock-based compensation awards, including stock options, stock appreciation rights, restricted stock awards, restricted stock units, performance bonus awards, performance stock unit awards, dividend equivalents, or other stock or cash based awards.

We have reserved the following shares of common stock, on an as-converted basis, for future issuance:

	June 30, 2025	December 31, 2024
Outstanding stock options	11,865,483	14,687,538
Outstanding RSUs	7,615,351	11,175,380
Remaining shares reserved for future issuances under the 2024 Plan	45,350,994	36,711,788
Shares reserved for community impact initiatives and charitable activities	1,337,205	1,337,205
Total shares of common stock reserved	66,169,033	63,911,911

The remaining shares reserved for future issuance under the 2024 Plan relate to our Class A common stock.

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Stock-Based Compensation

6 Months Ended

Jun. 30, 2025

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

12. Stock-Based Compensation

RSUs and RSAs

Our restricted stock units (“RSUs”) and restricted stock awards (“RSAs”) vest based on the terms in the grant agreements and generally vest ratably over one to four years from the vesting commencement date. The following table summarizes the RSU and RSA activity for the six months ended June 30, 2025:

	Total RSUs and RSAs	Weighted- average grant date fair value
Unvested as of December 31, 2024	11,344,247	$	37.67
Granted	1,149,225	$	115.73
Vested	(4,325,212)	$	44.54
Canceled/Forfeited	(436,148)	$	41.48
Unvested as of June 30, 2025	7,732,112	$	45.22

As of June 30, 2025, we had RSUs and RSAs outstanding for 7,732,112 common shares, of which 7,208,772 relate to Class A common stock and 523,340 relate to Class B common stock. Total unrecognized stock-based compensation expense related to RSUs and RSAs was $248.3 million as of June 30, 2025 and is expected to be recognized over a weighted-average period of 1.04 years.

Stock Options

Stock options vest based on terms in the stock option agreement and generally vest over five years quarterly or four years with 25% of the award vesting one year from the vesting commencement date then ratably over the following three years. The following table summarizes the stock option activity during the six months ended June 30, 2025:

	Outstanding stock options	Weighted- average exercise price		Weighted- average remaining contractual life (years)	Aggregate intrinsic value
	(in thousands, except share, per share, and year data)
Balance as of December 31, 2024	14,687,538	$	30.07	6.87	$	1,958,924
Exercised	(2,819,924)	5.14
Canceled/Forfeited	(2,131)	34.34
Balance as of June 30, 2025	11,865,483	$	35.99	7.36	$	1,359,543
Vested as of June 30, 2025	5,617,433	$	25.90	6.12	$	700,300
Vested and expected to vest as of June 30, 2025	11,865,483	$	35.99	7.36	$	1,359,543

As of June 30, 2025, we had outstanding stock options for 11,865,483 common shares, of which 10,136,166 relate to Class A common stock and 1,729,317 relate to Class B common stock. Total unrecognized stock-based compensation expense related

to stock options was $97.4 million as of June 30, 2025 and is expected to be recognized over a weighted-average period of 3.48 years.

Stock-Based Compensation Expense

The following table summarizes the components of stock-based compensation expense recognized in the consolidated statements of operations for all periods presented:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
Cost of revenue	$	204	$	61	$	421	$	319
Research and development	56,663		29,944		109,273		346,458
Sales and marketing	10,198		6,875		20,336		67,665
General and administrative	22,005		27,386		44,454		227,332
Stock-based compensation expense	$	89,070	$	64,266	$	174,484	$	641,774

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Income Taxes

6 Months Ended

Jun. 30, 2025

Income Tax Disclosure [Abstract]

Income Taxes

13. Income Taxes

Our provision for income taxes for interim periods is determined using an estimate of our annual effective tax rate, adjusted for discrete items, if any, that arise during the period. Each quarter, we update the estimate of the annual effective tax rate, and if the estimated annual effective tax rate changes, we make a cumulative adjustment in such period. For the three and six months ended June 30, 2025 and 2024, income tax expense (benefit) was immaterial. We continue to maintain a full valuation allowance on our remaining federal and state deferred tax assets.

On July 4, 2025, the One Big Beautiful Bill Act (“OBBBA”) was signed into law. The OBBBA includes changes to U.S. federal income tax law that will be applicable to us beginning in the period of enactment, including provisions allowing accelerated tax deductions for domestic research and development expenditures. We are currently analyzing the impact that the OBBBA will have on our consolidated financial statements.

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Related Parties and Related-Party Transactions

6 Months Ended

Jun. 30, 2025

Related Party Transactions [Abstract]

Related Parties and Related-Party Transactions

14. Related Parties and Related-Party Transactions

Advance Magazine Publishers Inc.

As of June 30, 2025, Advance Magazine Publishers Inc. (“Advance”) held approximately 23% of our outstanding shares of Class A and Class B common stock and is a related party to Reddit as Advance holds more than 10% of the voting power of our outstanding Class A and Class B common stock. There have been no changes to the terms of the agreements that govern Advance’s rights as disclosed in the audited consolidated financial statements as of and for the year ended December 31, 2024 included in our Annual Report.

We currently sublease office space in New York and Chicago from Advance. Total lease costs and other related expenses for our subleases were immaterial for the three and six months ended June 30, 2025 and 2024.

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Segment and Geographic Information

6 Months Ended

Jun. 30, 2025

Segment Reporting [Abstract]

Segment and Geographic Information

15. Segment and Geographic Information

Segment Information

We have one reportable segment as our chief operating decision maker, our Chief Executive Officer, reviews consolidated profitability measures in managing the business. Specifically, our chief operating decision maker uses consolidated net income

(loss) as the measure of segment profit or loss for evaluating performance and allocating resources through comparison of actual amounts against budgeted and prior period amounts in order to make strategic decisions.

The following table presents the calculation of segment net income (loss):

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Revenue	$	499,627	$	281,184	$	891,988	$	524,147
Adjusted cost of revenue(1)	45,696		29,440		82,568		56,798
Adjusted gross profit	453,931		251,744		809,420		467,349
Adjusted operating expenses(2)	287,182		212,241		527,400		417,821
Stock-based compensation and related taxes	95,104		66,772		202,509		662,309
Depreciation and amortization	3,934		3,770		7,897		7,513
Interest (income) expense, net	(21,056)		(20,941)		(41,470)		(36,388)
Income tax expense (benefit)	(439)		(216)		(2,160)		149
Other segment expenses(3)	(91)		217		(211)		1,110
Segment net income (loss)	$	89,297	$	(10,099)	$	115,455	$	(585,165)
Consolidated net income (loss)	$	89,297	$	(10,099)	$	115,455	$	(585,165)

________________

(1)Adjusted cost of revenue is cost of revenue adjusted for stock-based compensation and related taxes as follows:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Cost of revenue	$	45,900	$	29,501	$	82,989	$	57,117
Less:
Stock-based compensation and related taxes	204		61		421		319
Adjusted cost of revenue	$	45,696	$	29,440	$	82,568	$	56,798

(2)Adjusted operating expenses is operating expenses (comprised of research and development, sales and marketing, and general and administrative expenses) adjusted for stock-based compensation and related taxes and depreciation and amortization as follows:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Operating expenses	$	386,016	$	282,722	$	737,385	$	1,087,324
Less:
Stock-based compensation and related taxes	94,900		66,711		202,088		661,990
Depreciation and amortization	3,934		3,770		7,897		7,513
Adjusted operating expenses	$	287,182	$	212,241	$	527,400	$	417,821

(3)Other segment expenses primarily includes realized gains and losses on sales of marketable securities and foreign currency transaction gains and losses.

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Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Pay vs Performance Disclosure
Net income (loss)	$ 89,297	$ (10,099)	$ 115,455	$ (585,165)

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Insider Trading Arrangements

3 Months Ended

Jun. 30, 2025

shares

Trading Arrangements, by Individual

Non-Rule 10b5-1 Arrangement Adopted

false

Rule 10b5-1 Arrangement Terminated

false

Non-Rule 10b5-1 Arrangement Terminated

false

Christopher Slowe [Member]

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

On May 9, 2025, our Chief Technology Officer, Christopher Slowe, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) for the sale of up to 350,000 shares of our Class A common stock. The trading plan will terminate at the earlier of the execution of all trading orders pursuant to the plan or August 20, 2026.

Name

Christopher Slowe

Title

Chief Technology Officer

Rule 10b5-1 Arrangement Adopted

true

Adoption Date

May 9, 2025

Expiration Date

August 20, 2026.

Arrangement Duration

468 days

Aggregate Available

350,000

Jennifer Wong [Member]

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

On May 16, 2025, our Chief Operating Officer, Jennifer Wong, individually and through a trust for which she is a trustee, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) for the sale of up to 714,656 shares of our Class A common stock. The actual number of shares subject to the Rule 10b5-1 trading arrangement is expected to be different due to our withholding of certain shares to satisfy tax withholding obligations in connection with the vesting of restricted stock units. The trading plan will terminate at the earlier of the execution of all trading orders pursuant to the plan or August 19, 2026.

Name

Jennifer Wong

Title

Chief Operating Officer

Rule 10b5-1 Arrangement Adopted

true

Adoption Date

May 16, 2025

Expiration Date

August 19, 2026

Arrangement Duration

460 days

Aggregate Available

714,656

Steven Huffman [Member]

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

On May 19, 2025, our Chief Executive Officer and Director, Steven Huffman, through a trust for which he is a trustee, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) for the sale of up to 450,000 shares of our Class A common stock. The trading plan will terminate at the earlier of the execution of all trading orders pursuant to the plan or August 31, 2026. As of June 30, 2025, the shares subject to Mr. Huffman’s trading plan represent 4.44% of his outstanding common stock and equity awards.

Name

Steven Huffman

Title

Chief Executive Officer and Director

Rule 10b5-1 Arrangement Adopted

true

Adoption Date

May 19, 2025

Expiration Date

August 31, 2026

Arrangement Duration

469 days

Aggregate Available

450,000

Andrew Vollero [Member]

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

On June 3, 2025, our Chief Financial Officer, Andrew Vollero, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) for the sale of up to 30,000 shares of our Class A common stock. The trading plan will terminate at the earlier of the execution of all trading orders pursuant to the plan or November 14, 2025.

Name

Andrew Vollero

Title

Chief Financial Officer

Rule 10b5-1 Arrangement Adopted

true

Adoption Date

June 3, 2025

Expiration Date

November 14, 2025

Arrangement Duration

164 days

Aggregate Available

30,000

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Basis of Presentation and Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation of Unaudited Interim Financial Information

Our consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) regarding interim financial information. Our consolidated financial statements include the accounts of Reddit, Inc. and our wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Certain information and disclosures normally included in the annual consolidated financial statements prepared in accordance with U.S. GAAP have been omitted. Accordingly, the unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2024, as filed with the SEC on February 13, 2025 (our “Annual Report”). The unaudited interim consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and reflect, in our opinion, all the adjustments of a normal, recurring nature that are necessary for the fair statement of our financial position, results of operations, and cash flows for the interim periods, but are not necessarily indicative of the results expected for the full year or any other period.

Basis of Presentation of Unaudited Interim Financial Information

Our consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) regarding interim financial information. Our consolidated financial statements include the accounts of Reddit, Inc. and our wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Certain information and disclosures normally included in the annual consolidated financial statements prepared in accordance with U.S. GAAP have been omitted. Accordingly, the unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2024, as filed with the SEC on February 13, 2025 (our “Annual Report”). The unaudited interim consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and reflect, in our opinion, all the adjustments of a normal, recurring nature that are necessary for the fair statement of our financial position, results of operations, and cash flows for the interim periods, but are not necessarily indicative of the results expected for the full year or any other period.

Use of Estimates

The preparation of the unaudited consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements and accompanying notes. Management’s estimates are based on historical information available as of the date of the consolidated financial statements and various other assumptions that we believe are reasonable under the circumstances. Actual results could differ materially from those estimates.

Significant estimates relate primarily to determining the fair value of stock-based awards, the fair value of assets and liabilities assumed in business combinations, and the incremental borrowing rate used to determine operating lease right-of-use assets and lease liabilities. On an ongoing basis, management evaluates our estimates compared to historical experience and trends, which form the basis for making judgments about the carrying value of assets and liabilities.

Functional Currency

Generally, the U.S. dollar is the functional currency for our subsidiaries, and therefore, foreign currency denominated monetary assets and liabilities are remeasured into U.S. dollars at exchange rates at the balance sheet date and foreign currency denominated non-monetary assets and liabilities are remeasured into U.S. dollars at historical exchange rates. Gains or losses from foreign currency remeasurement and settlements are included in other income (expense), net in the consolidated statements of operations. For those foreign subsidiaries where the local currency is the functional currency, we translate the financial statements to U.S. dollars at exchange rates at the balance sheet date for assets and liabilities and at monthly average exchange rates for revenues and expenses. Translation gains and losses are recorded in accumulated other comprehensive income (loss) as a component of stockholders’ equity (deficit). Net foreign exchange gains and losses were not material for the three and six months ended June 30, 2025 and 2024.

Concentration of Credit Risk

Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash and cash equivalents, restricted cash, marketable securities, and accounts receivable. We maintain cash and cash equivalents with several financial institutions. We believe that the financial institutions that hold our cash and cash equivalents are financially sound and, accordingly, minimal credit risks exist with respect to these balances. We maintain investments in U.S. and non-U.S. government securities, investment-grade corporate and government agency securities, certificates of deposit, commercial paper, and money market accounts that carry high credit ratings and accordingly, minimal credit risk exists with respect to these balances.

Recently Adopted Accounting Pronouncements / Accounting Pronouncements Not Yet Adopted

In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which requires an entity to disclose specific categories in the effective tax rate reconciliation as well as provide additional information for reconciling items that meet a quantitative threshold. This standard also requires certain disaggregated disclosures related to income from continuing operations, income tax expense, and income taxes paid. We adopted this standard effective January 1, 2025. Adoption of this standard will result in additional disclosures in our annual consolidated financial statements, but did not impact these unaudited interim consolidated financial statements.

Accounting Pronouncements Not Yet Adopted

In November 2024, the FASB issued ASU No. 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires an entity to disclose disaggregated information about certain income statement expense line items. The standard is effective for us beginning January 1, 2027, with early adoption permitted. We are currently evaluating the impact the adoption will have on our disclosures.

Net Income (Loss) per Share

We compute net income (loss) per share of Class A and Class B common stock using the two-class method required for multiple classes of common stock and participating securities. Prior to our initial public offering (“IPO”) in March 2024, our participating securities included Series A, Series A-1, Series B, Series C, Series D, Series D-1, Series E, Series F, and Series F-1 convertible preferred stock, as the holders of these series of preferred stock were entitled to receive noncumulative dividends subject to certain requirements at an annual rate of 8% of the respective original issue price then in effect in the event that a dividend was paid on common stock.

In connection with our IPO, our Series A, Series A-1, Series B, Series C, Series D, Series D-1, Series E, and Series F preferred stock converted on a one-to-one basis into 67,917,432 shares of Class B common stock, and our Series F-1 preferred stock converted on a one-to-one basis into 5,104,017 shares of Class A common stock. For the three and six months ended June 30, 2024, these shares are weighted in the denominator of net income (loss) per share for Class A and Class B common stock for the portion of the time outstanding subsequent to our IPO.

Fair Value Measurements

Fair value is defined as the price that would be received to sell an asset in an orderly transaction between market participants at the measurement date. To increase the comparability of fair value measures, the following hierarchy prioritizes the inputs to valuation methodologies used to measure fair value:

•Level 1: Quoted market prices in active markets for identical assets or liabilities

•Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data

•Level 3: Unobservable inputs reflecting the reporting entity’s own assumptions or external inputs from inactive markets

We classify our cash equivalents and marketable securities within Level 1 or Level 2 because we use quoted market prices or alternative pricing sources and models utilizing market observable inputs to determine their fair value. There were no transfers between levels during the periods presented.

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Revenue (Tables)

6 Months Ended

Jun. 30, 2025

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table represents our revenue disaggregated by source:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Advertising revenue	$	464,785	$	253,125	$	823,415	$	475,807
Other revenue	34,842		28,059		68,573		48,340
Total revenue	$	499,627	$	281,184	$	891,988	$	524,147

The following table represents our revenue disaggregated by geography based on the billing address of the customer:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
United States	$	408,842	$	228,069	$	722,694	$	427,872
Rest of world(1)	90,785		53,115		169,294		96,275
Total revenue	$	499,627	$	281,184	$	891,988	$	524,147

______________

(1)Other than the United States, no individual country represented 10% or more of total revenue during the three and six months ended June 30, 2025 and 2024.

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Net Income (Loss) per Share (Tables)

6 Months Ended

Jun. 30, 2025

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Net Income (Loss) per Share Attributable to Common Stock

The following table presents the calculation of basic and diluted net income (loss) per share attributable to common stock:

	Three months ended June 30,								Six months ended June 30,
	2025				2024				2025				2024
	Class A		Class B		Class A		Class B		Class A		Class B		Class A		Class B
	(in thousands, except share and per share data)
Basic net income (loss) per share attributable to common stockholders:
Numerator:
Net income (loss) attributable to common stockholders	$	62,806	$	26,491	$	(3,034)	$	(7,065)	$	80,803	$	34,652	$	(151,229)	$	(433,936)
Denominator:
Basic weighted-average common shares outstanding	130,426,589		55,011,188		49,386,912		114,995,824		128,586,761		55,144,231		30,317,800		86,993,814
Basic income (loss) per share attributable to common stockholders	$	0.48	$	0.48	$	(0.06)	$	(0.06)	$	0.63	$	0.63	$	(4.99)	$	(4.99)
Diluted net income (loss) per share attributable to common stockholders:
Numerator:
Net income (loss) attributable to common stockholders	$	64,676	$	24,621	$	(3,034)	$	(7,065)	$	83,730	$	31,725	$	(151,229)	$	(433,936)
Denominator:
Basic weighted-average common shares outstanding	130,426,589		55,011,188		49,386,912		114,995,824		128,586,761		55,144,231		30,317,800		86,993,814
Weighted-average effect of dilutive potential common stock	14,084,656		—		—		—		16,950,466		—		—		—
Shares used in computation of diluted net income (loss) per share attributable to common stockholders	144,511,245		55,011,188		49,386,912		114,995,824		145,537,227		55,144,231		30,317,800		86,993,814
Diluted net income (loss) per share attributable to common stockholders	$	0.45	$	0.45	$	(0.06)	$	(0.06)	$	0.58	$	0.58	$	(4.99)	$	(4.99)

Schedule of Antidilutive Securities Excluded from Computation of Diluted Net Income (Loss) per Share Attributable to Common Stock

The following outstanding potentially dilutive shares, including stock options that have been exercised prior to vesting, were excluded from the computation of diluted net income (loss) per share attributable to common stock for the periods presented because the impact of including them would have been anti-dilutive.

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	Class A	Class B	Class A	Class B	Class A	Class B	Class A	Class B
Stock options	—	—	19,090,416	6,410,374	—	—	19,090,416	6,410,374
Unvested RSUs and RSAs	433,058	—	12,620,086	1,335,312	126,137	—	12,620,086	1,335,312
	433,058	—	31,710,502	7,745,686	126,137	—	31,710,502	7,745,686

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2025

Fair Value Disclosures [Abstract]

Schedule of Financial Assets Measured at Fair Value on a Recurring Basis

The following table sets forth our financial assets that are measured at fair value on a recurring basis:

		June 30, 2025
	Fair value hierarchy level	Cost or amortized cost		Gross unrealized gains		Gross unrealized losses		Fair value
		(in thousands)
Cash equivalents:
Money market funds	Level 1	$	621,940	$	—	$	—	$	621,940
U.S. treasury securities	Level 1	19,967		—		—		19,967
Certificates of deposit	Level 2	25,397		—		—		25,397
Marketable securities:
U.S. treasury securities	Level 1	665,971		899		(70)		666,800
U.S. agency bonds	Level 2	301,916		77		(207)		301,786
Corporate bonds	Level 2	239,906		586		(16)		240,476
Commercial paper	Level 2	116,831		6		(18)		116,819
Total		$	1,991,928	$	1,568	$	(311)	$	1,993,185

		December 31, 2024
	Fair value hierarchy level	Cost or amortized cost		Gross unrealized gains		Gross unrealized losses		Fair value
		(in thousands)
Cash equivalents:
Money market funds	Level 1	$	497,461	$	—	$	—	$	497,461
U.S. treasury securities	Level 1	5,979		2		—		5,981
Corporate bonds	Level 2	1,066		2		—		1,068
Marketable securities:
U.S. treasury securities	Level 1	817,996		1,120		(396)		818,720
U.S. agency bonds	Level 2	117,965		15		(62)		117,918
Corporate bonds	Level 2	159,424		400		(86)		159,738
Commercial paper	Level 2	182,264		99		(22)		182,341
Total		$	1,782,155	$	1,638	$	(566)	$	1,783,227

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Balance Sheet Components (Tables)

6 Months Ended

Jun. 30, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following:

	June 30, 2025		December 31, 2024
	(in thousands)
Prepaid expenses	$	23,290	$	14,583
Other receivables	26,876		11,500
Interest receivable	9,089		4,695
Other	3,506		2,280
Total prepaid expenses and other current assets	$	62,761	$	33,058

Schedule of Property and Equipment, Net

Property and equipment, net consisted of the following:

	June 30, 2025		December 31, 2024
	(in thousands)
Computer equipment, furniture, and fixtures	$	16,880	$	15,832
Leasehold improvements	8,051		8,017
Construction-in-progress	63		—
Total property and equipment	24,994		23,849
Less: accumulated depreciation	(13,600)		(11,197)
Total property and equipment, net	$	11,394	$	12,652

Schedule of Accrued Expenses and Other Current Liabilities

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:

	June 30, 2025		December 31, 2024
	(in thousands)
Accrued compensation and benefits	$	56,042	$	63,441
Deferred revenue	18,826		14,805
Accrued expenses	49,108		31,817
Accrued revenue share payable and other	7,493		6,939
Other	8,848		7,462
Total accrued expenses and other current liabilities	$	140,317	$	124,464

Schedule of Other Noncurrent Liabilities

Other noncurrent liabilities consisted of the following:

	June 30, 2025		December 31, 2024
	(in thousands)
Accrued customer incentives	$	15,632	$	9,100
Other	148		157
Total other noncurrent liabilities	$	15,780	$	9,257

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Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Acquired Intangible Assets

Acquired intangible assets consisted of the following:

	June 30, 2025
	Gross carrying value		Accumulated amortization		Net carrying value		Weighted-average remaining useful life (years)
	(in thousands, except year data)
Developed technology	$	47,460	$	27,007	$	20,453	2.1
Other intangible assets	600		600		—		—
Total acquired intangible assets	$	48,060	$	27,607	$	20,453

	December 31, 2024
	Gross carrying value		Accumulated amortization		Net carrying value		Weighted-average remaining useful life (years)
	(in thousands, except year data)
Developed technology	$	47,460	$	22,051	$	25,409	2.6
Other intangible assets	600		600		—		—
Total acquired intangible assets	$	48,060	$	22,651	$	25,409

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Stockholders' Equity (Deficit) (Tables)

6 Months Ended

Jun. 30, 2025

Equity [Abstract]

Schedule of Stock Reserved for Future Issuance

We have reserved the following shares of common stock, on an as-converted basis, for future issuance:

	June 30, 2025	December 31, 2024
Outstanding stock options	11,865,483	14,687,538
Outstanding RSUs	7,615,351	11,175,380
Remaining shares reserved for future issuances under the 2024 Plan	45,350,994	36,711,788
Shares reserved for community impact initiatives and charitable activities	1,337,205	1,337,205
Total shares of common stock reserved	66,169,033	63,911,911

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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2025

Share-Based Payment Arrangement [Abstract]

Summary of RSU and RSA Activity

The following table summarizes the RSU and RSA activity for the six months ended June 30, 2025:

	Total RSUs and RSAs	Weighted- average grant date fair value
Unvested as of December 31, 2024	11,344,247	$	37.67
Granted	1,149,225	$	115.73
Vested	(4,325,212)	$	44.54
Canceled/Forfeited	(436,148)	$	41.48
Unvested as of June 30, 2025	7,732,112	$	45.22

Summary of Stock Option Activity

The following table summarizes the stock option activity during the six months ended June 30, 2025:

	Outstanding stock options	Weighted- average exercise price		Weighted- average remaining contractual life (years)	Aggregate intrinsic value
	(in thousands, except share, per share, and year data)
Balance as of December 31, 2024	14,687,538	$	30.07	6.87	$	1,958,924
Exercised	(2,819,924)	5.14
Canceled/Forfeited	(2,131)	34.34
Balance as of June 30, 2025	11,865,483	$	35.99	7.36	$	1,359,543
Vested as of June 30, 2025	5,617,433	$	25.90	6.12	$	700,300
Vested and expected to vest as of June 30, 2025	11,865,483	$	35.99	7.36	$	1,359,543

Summary of Components of Stock-Based Compensation Expense

The following table summarizes the components of stock-based compensation expense recognized in the consolidated statements of operations for all periods presented:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
Cost of revenue	$	204	$	61	$	421	$	319
Research and development	56,663		29,944		109,273		346,458
Sales and marketing	10,198		6,875		20,336		67,665
General and administrative	22,005		27,386		44,454		227,332
Stock-based compensation expense	$	89,070	$	64,266	$	174,484	$	641,774

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Segment and Geographic Information (Tables)

6 Months Ended

Jun. 30, 2025

Segment Reporting [Abstract]

Schedule of Segment Net Income (Loss)

The following table presents the calculation of segment net income (loss):

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Revenue	$	499,627	$	281,184	$	891,988	$	524,147
Adjusted cost of revenue(1)	45,696		29,440		82,568		56,798
Adjusted gross profit	453,931		251,744		809,420		467,349
Adjusted operating expenses(2)	287,182		212,241		527,400		417,821
Stock-based compensation and related taxes	95,104		66,772		202,509		662,309
Depreciation and amortization	3,934		3,770		7,897		7,513
Interest (income) expense, net	(21,056)		(20,941)		(41,470)		(36,388)
Income tax expense (benefit)	(439)		(216)		(2,160)		149
Other segment expenses(3)	(91)		217		(211)		1,110
Segment net income (loss)	$	89,297	$	(10,099)	$	115,455	$	(585,165)
Consolidated net income (loss)	$	89,297	$	(10,099)	$	115,455	$	(585,165)

________________

(1)Adjusted cost of revenue is cost of revenue adjusted for stock-based compensation and related taxes as follows:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Cost of revenue	$	45,900	$	29,501	$	82,989	$	57,117
Less:
Stock-based compensation and related taxes	204		61		421		319
Adjusted cost of revenue	$	45,696	$	29,440	$	82,568	$	56,798

(2)Adjusted operating expenses is operating expenses (comprised of research and development, sales and marketing, and general and administrative expenses) adjusted for stock-based compensation and related taxes and depreciation and amortization as follows:

	Three months ended June 30,				Six months ended June 30,
	2025		2024		2025		2024
	(in thousands)
Operating expenses	$	386,016	$	282,722	$	737,385	$	1,087,324
Less:
Stock-based compensation and related taxes	94,900		66,711		202,088		661,990
Depreciation and amortization	3,934		3,770		7,897		7,513
Adjusted operating expenses	$	287,182	$	212,241	$	527,400	$	417,821

(3)Other segment expenses primarily includes realized gains and losses on sales of marketable securities and foreign currency transaction gains and losses.

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Revenue - Disaggregation of Revenue by Source (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 499,627	$ 281,184	$ 891,988	$ 524,147
Advertising revenue
Disaggregation of Revenue [Line Items]
Revenue	464,785	253,125	823,415	475,807
Other revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 34,842	$ 28,059	$ 68,573	$ 48,340

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Revenue - Disaggregation of Revenue by Geography (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 499,627	$ 281,184	$ 891,988	$ 524,147
United States
Disaggregation of Revenue [Line Items]
Revenue	$ 408,842	$ 228,069	$ 722,694	$ 427,872
United States | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage (more than)	10.00%	10.00%	10.00%	10.00%
Rest of world
Disaggregation of Revenue [Line Items]
Revenue	$ 90,785	$ 53,115	$ 169,294	$ 96,275

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Revenue - Narrative (Details) - USD ($)	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue	$ 18,900,000		$ 14,900,000
Revenue recognized from deferred revenue balance in prior periods	14,000,000	$ 0
Aggregate amount of remaining performance obligations	194,900,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Aggregate amount of remaining performance obligations	$ 57,000,000
Expected timing of revenue recognition for remaining performance obligations	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Aggregate amount of remaining performance obligations	$ 113,800,000
Expected timing of revenue recognition for remaining performance obligations	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Aggregate amount of remaining performance obligations	$ 24,100,000
Expected timing of revenue recognition for remaining performance obligations	1 year

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Net Income (Loss) per Share - Narrative (Details)		3 Months Ended
	Mar. 25, 2024 shares	Mar. 24, 2024
Class of Stock [Line Items]
Preferred stock, annual dividend rate		8.00%
Conversion ratio	1
Class B common stock
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock into common stock in connection with initial public offering (in shares)	67,917,432
Class A common stock
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock into common stock in connection with initial public offering (in shares)	5,104,017

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Net Income (Loss) per Share - Computation of Net Income (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Denominator:
Basic weighted-average common shares outstanding (in shares)	185,437,777	164,382,736	183,730,992	117,311,614
Basic income (loss) per share attributable to common stockholders	$ 0.48	$ (0.06)	$ 0.63	$ (4.99)
Denominator:
Basic weighted-average common shares outstanding (in shares)	185,437,777	164,382,736	183,730,992	117,311,614
Shares used in computation of diluted net income (loss) per share attributable to common stockholders	199,522,433	164,382,736	200,681,458	117,311,614
Diluted income (loss) per share attributable to common stockholders (in dollars per share)	$ 0.45	$ (0.06)	$ 0.58	$ (4.99)
Class A
Numerator:
Net income (loss) attributable to common stockholders	$ 62,806	$ (3,034)	$ 80,803	$ (151,229)
Denominator:
Basic weighted-average common shares outstanding (in shares)	130,426,589	49,386,912	128,586,761	30,317,800
Basic income (loss) per share attributable to common stockholders	$ 0.48	$ (0.06)	$ 0.63	$ (4.99)
Numerator:
Net income (loss) attributable to common stockholders	$ 64,676	$ (3,034)	$ 83,730	$ (151,229)
Denominator:
Basic weighted-average common shares outstanding (in shares)	130,426,589	49,386,912	128,586,761	30,317,800
Weighted average effect of dilutive potential common stock (in shares)	14,084,656	0	16,950,466	0
Shares used in computation of diluted net income (loss) per share attributable to common stockholders	144,511,245	49,386,912	145,537,227	30,317,800
Diluted income (loss) per share attributable to common stockholders (in dollars per share)	$ 0.45	$ (0.06)	$ 0.58	$ (4.99)
Class B
Numerator:
Net income (loss) attributable to common stockholders	$ 26,491	$ (7,065)	$ 34,652	$ (433,936)
Denominator:
Basic weighted-average common shares outstanding (in shares)	55,011,188	114,995,824	55,144,231	86,993,814
Basic income (loss) per share attributable to common stockholders	$ 0.48	$ (0.06)	$ 0.63	$ (4.99)
Numerator:
Net income (loss) attributable to common stockholders	$ 24,621	$ (7,065)	$ 31,725	$ (433,936)
Denominator:
Basic weighted-average common shares outstanding (in shares)	55,011,188	114,995,824	55,144,231	86,993,814
Weighted average effect of dilutive potential common stock (in shares)	0	0	0	0
Shares used in computation of diluted net income (loss) per share attributable to common stockholders	55,011,188	114,995,824	55,144,231	86,993,814
Diluted income (loss) per share attributable to common stockholders (in dollars per share)	$ 0.45	$ (0.06)	$ 0.58	$ (4.99)

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Net Income (Loss) per Share - Anti-dilutive Shares Excluded from Computation of Net Income (Loss) per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Class A
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of net income (loss) per share (in shares)	433,058	31,710,502	126,137	31,710,502
Class A | Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of net income (loss) per share (in shares)	0	19,090,416	0	19,090,416
Class A | Unvested RSUs and RSAs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of net income (loss) per share (in shares)	433,058	12,620,086	126,137	12,620,086
Class B
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of net income (loss) per share (in shares)	0	7,745,686	0	7,745,686
Class B | Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of net income (loss) per share (in shares)	0	6,410,374	0	6,410,374
Class B | Unvested RSUs and RSAs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of net income (loss) per share (in shares)	0	1,335,312	0	1,335,312

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Fair Value Measurements - Schedule of Financial Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Marketable securities:
Gross unrealized gains	$ 1,568	$ 1,638
Gross unrealized losses	(311)	(566)
Total
Cost or amortized cost	1,991,928	1,782,155
Fair value	1,993,185	1,783,227
Money market funds
Cash equivalents:
Cost or amortized cost	621,940	497,461
U.S. treasury securities | Cash equivalents
Marketable securities:
Cost or amortized cost	19,967	5,979
Gross unrealized gains	0	2
Gross unrealized losses	0	0
Fair value	19,967	5,981
U.S. treasury securities | Marketable securities
Marketable securities:
Cost or amortized cost	665,971	817,996
Gross unrealized gains	899	1,120
Gross unrealized losses	(70)	(396)
Fair value	666,800	818,720
Certificates of deposit
Cash equivalents:
Cost or amortized cost	25,397
U.S. agency bonds | Marketable securities
Marketable securities:
Cost or amortized cost	301,916	117,965
Gross unrealized gains	77	15
Gross unrealized losses	(207)	(62)
Fair value	301,786	117,918
Corporate bonds | Cash equivalents
Marketable securities:
Cost or amortized cost		1,066
Gross unrealized gains		2
Gross unrealized losses		0
Fair value		1,068
Corporate bonds | Marketable securities
Marketable securities:
Cost or amortized cost	239,906	159,424
Gross unrealized gains	586	400
Gross unrealized losses	(16)	(86)
Fair value	240,476	159,738
Commercial paper | Marketable securities
Marketable securities:
Cost or amortized cost	116,831	182,264
Gross unrealized gains	6	99
Gross unrealized losses	(18)	(22)
Fair value	$ 116,819	$ 182,341

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Fair Value Measurements - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Impairment charges due to credit losses	$ 0	$ 0	$ 0	$ 0
Amortized cost of marketable securities with maturities with less than one year	820,400,000		820,400,000
Amortized cost of marketable securities with maturities between one and five years	$ 504,300,000		$ 504,300,000

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Balance Sheet Components - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepaid expenses	$ 23,290	$ 14,583
Other receivables	26,876	11,500
Interest receivable	9,089	4,695
Other	3,506	2,280
Total prepaid expenses and other current assets	$ 62,761	$ 33,058

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Balance Sheet Components - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 24,994	$ 23,849
Less: accumulated depreciation	(13,600)	(11,197)
Total property and equipment, net	11,394	12,652
Computer equipment, furniture, and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	16,880	15,832
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	8,051	8,017
Construction-in-progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 63	$ 0

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Balance Sheet Components - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued compensation and benefits	$ 56,042	$ 63,441
Deferred revenue	18,826	14,805
Accrued expenses	49,108	31,817
Accrued revenue share payable and other	7,493	6,939
Other	8,848	7,462
Total accrued expenses and other current liabilities	$ 140,317	$ 124,464

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Balance Sheet Components - Other Noncurrent Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued customer incentives	$ 15,632	$ 9,100
Other	148	157
Other noncurrent liabilities	$ 15,780	$ 9,257

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Acquisitions (Details) - USD ($) $ in Thousands	Jul. 15, 2024	Jun. 30, 2025	Dec. 31, 2024
Business Combination [Line Items]
Goodwill		$ 42,174	$ 42,174
July 2024 Acquisition
Business Combination [Line Items]
Aggregate purchase consideration	$ 19,900
Cash consideration	17,100
Fair value of equity consideration	2,800
Additional consideration for post-combination expenses	10,700
Purchase consideration	$ 4,300
Weighted-average remaining useful life (years)	3 years
Goodwill	$ 15,900

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Goodwill and Intangible Assets - Acquired Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Intangible Asset, Acquired, Finite-Lived [Line Items]
Gross carrying value	$ 48,060	$ 48,060
Accumulated amortization	27,607	22,651
Net carrying value	20,453	25,409
Developed technology
Intangible Asset, Acquired, Finite-Lived [Line Items]
Gross carrying value	47,460	47,460
Accumulated amortization	27,007	22,051
Net carrying value	$ 20,453	$ 25,409
Weighted-average remaining useful life (years)	2 years 1 month 6 days	2 years 7 months 6 days
Other intangible assets
Intangible Asset, Acquired, Finite-Lived [Line Items]
Gross carrying value	$ 600	$ 600
Accumulated amortization	600	600
Net carrying value	$ 0	$ 0

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Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 42,174	$ 42,174

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Debt (Details)				6 Months Ended
	Jul. 01, 2025 USD ($)	May 23, 2023	Oct. 08, 2021 USD ($)	Jun. 30, 2025 USD ($) instrument
Debt Instrument [Line Items]
Letter of credit outstanding				$ 5,200,000
Commitment fee percentage				0.15%
Revolving Credit Facility | Revolving Credit Facility and Standby Letter of Credit | Line of Credit
Debt Instrument [Line Items]
Debt instrument term			5 years
Maximum borrowing capacity			$ 750,000,000.0
Available borrowing capacity				$ 744,800,000
Revolving Credit Facility | Revolving Credit Facility and Standby Letter of Credit | Line of Credit | Subsequent Event
Debt Instrument [Line Items]
Debt instrument term	5 years
Maximum borrowing capacity	$ 500,000,000.0
Revolving Credit Facility | Revolving Credit Facility and Standby Letter of Credit Agreement, ABR Loans | Line of Credit
Debt Instrument [Line Items]
Interest rate floor (as a percent)		0.010
Additional basis spread (as a percent)		0.0025
Revolving Credit Facility | Revolving Credit Facility and Standby Letter of Credit Agreement, ABR Loans | Line of Credit | New York Federal Reserve Bank Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)		0.50%
Revolving Credit Facility | Revolving Credit Facility and Standby Letter of Credit Agreement, ABR Loans | Line of Credit | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)		1.00%
Revolving Credit Facility | Revolving Credit Facility and Standby Letter of Credit Agreement, Outstanding Term Benchmark Loans | Line of Credit
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)		1.25%
Revolving Credit Facility | Revolving Credit Facility and Standby Letter of Credit Agreement, Outstanding SONIA Loans | Line of Credit | Adjusted Daily Simple Sterling Over Night Indexed Average Rate (SONIA)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)		1.25%
Letter of Credit | Revolving Credit Facility and Standby Letter of Credit | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 100,000,000.0
Debt of debt instruments | instrument				2
Available borrowing capacity				$ 94,800,000
Letter of Credit | Revolving Credit Facility and Standby Letter of Credit | Line of Credit | Subsequent Event
Debt Instrument [Line Items]
Maximum borrowing capacity	100,000,000.0
Foreign Line of Credit | Revolving Credit Facility and Standby Letter of Credit | Line of Credit | Subsequent Event
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 100,000,000.0

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Stockholders' Equity (Deficit) (Details) - shares	Jun. 30, 2025	Dec. 31, 2024
Class of Stock [Line Items]
Total shares of common stock reserved (in shares)	66,169,033	63,911,911
2024 Plan
Class of Stock [Line Items]
Total shares of common stock reserved (in shares)	45,350,994	36,711,788
Community Impact Initiatives and Charitable Activities
Class of Stock [Line Items]
Total shares of common stock reserved (in shares)	1,337,205	1,337,205
Outstanding stock options
Class of Stock [Line Items]
Total shares of common stock reserved (in shares)	11,865,483	14,687,538
Outstanding RSUs
Class of Stock [Line Items]
Total shares of common stock reserved (in shares)	7,615,351	11,175,380

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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
RSUs and RSAs outstanding (in shares)	7,732,112	11,344,247
Unrecognized stock-based compensation expense related to RSUs and RSAs	$ 248.3
Stock options outstanding (in shares)	11,865,483	14,687,538
Unrecognized stock-based compensation expense related to stock options	$ 97.4
Class A common stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
RSUs and RSAs outstanding (in shares)	7,208,772
Stock options outstanding (in shares)	10,136,166
Class B common stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
RSUs and RSAs outstanding (in shares)	523,340
Stock options outstanding (in shares)	1,729,317
RSUs and RSAs
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized stock-based compensation expense, weighted-average period of recognition	1 year 14 days
RSUs and RSAs | Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period for equity based payment awards	1 year
RSUs and RSAs | Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period for equity based payment awards	4 years
Stock options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized stock-based compensation expense, weighted-average period of recognition	3 years 5 months 23 days
Stock options | Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period for equity based payment awards	1 year
Award vesting (as a percent)	25.00%
Stock options | Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period for equity based payment awards	3 years
Stock options | Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period for equity based payment awards	4 years
Stock options | Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period for equity based payment awards	5 years

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Stock-Based Compensation - RSUs and RSAs (Details)	6 Months Ended
	Jun. 30, 2025 $ / shares shares
Total RSUs and RSAs
Unvested, beginning balance (in shares) | shares	11,344,247
Granted (in shares) | shares	1,149,225
Vested (in shares) | shares	(4,325,212)
Canceled/forfeited (in shares) | shares	(436,148)
Unvested, ending balance (in shares) | shares	7,732,112
Weighted- average grant date fair value
Unvested, beginning balance (in dollars per share) | $ / shares	$ 37.67
Granted (in dollars per share) | $ / shares	115.73
Vested (in dollars per share) | $ / shares	44.54
Canceled/forfeited (in dollars per share) | $ / shares	41.48
Unvested, ending balance (in dollars per share) | $ / shares	$ 45.22

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Stock-Based Compensation - Stock Options (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2025 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) $ / shares shares
Outstanding stock options
Beginning balance (in shares) | shares	14,687,538
Exercised (in shares) | shares	(2,819,924)
Canceled/forfeited (in shares) | shares	(2,131)
Ending balance (in shares) | shares	11,865,483	14,687,538
Weighted- average exercise price
Beginning balance (in dollars per share) | $ / shares	$ 30.07
Exercised (in dollars per share) | $ / shares	5.14
Canceled/forfeited (in dollars per share) | $ / shares	34.34
Ending balance (in dollars per share) | $ / shares	$ 35.99	$ 30.07
Stock Options Additional Disclosures
Options vested (in shares) | shares	5,617,433
Options vested and expected to vest (in shares) | shares	11,865,483
Options vested, weighted-average exercise price (in dollars per share) | $ / shares	$ 25.90
Options vested and expected to vest, weighted-average exercise price (in dollars per share) | $ / shares	$ 35.99
Options outstanding, weighted-average remaining contractual life (years)	7 years 4 months 9 days	6 years 10 months 13 days
Options vested, weighted-average remaining contractual life (years)	6 years 1 month 13 days
Options vested and expected to vest, weighted-average remaining contractual life (years)	7 years 4 months 9 days
Options outstanding, aggregate intrinsic value | $	$ 1,359,543	$ 1,958,924
Options vested, aggregate intrinsic value | $	700,300
Options vested and expected to vest, aggregate intrinsic value | $	$ 1,359,543

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Stock-Based Compensation - Components of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 89,070	$ 64,266	$ 174,484	$ 641,774
Cost of revenue
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	204	61	421	319
Research and development
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	56,663	29,944	109,273	346,458
Sales and marketing
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	10,198	6,875	20,336	67,665
General and administrative
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 22,005	$ 27,386	$ 44,454	$ 227,332

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Related Parties and Related-Party Transactions (Details)	Jun. 30, 2025
Advance Magazine Publishers Inc. | Reddit, Inc.
Related Party Transaction [Line Items]
Percentage of ownership in Reddit	23.00%

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Segment and Geographic Information - Narrative (Details)	6 Months Ended
	Jun. 30, 2025 segment
Segment Reporting [Abstract]
Number of reportable segments	1

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Segment and Geographic Information - Schedule of Segment Net Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 499,627	$ 281,184	$ 891,988	$ 524,147
Depreciation and amortization	3,934	3,770	7,897	7,513
Income tax expense (benefit)	(439)	(216)	(2,160)	149
Net income (loss)	89,297	(10,099)	115,455	(585,165)
Reportable Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue			891,988	524,147
Adjusted cost of revenue	45,696	29,440	82,568	56,798
Adjusted gross profit	453,931	251,744	809,420	467,349
Adjusted operating expenses	287,182	212,241	527,400	417,821
Stock-based compensation and related taxes	95,104	66,772	202,509	662,309
Depreciation and amortization	3,934	3,770	7,897	7,513
Interest (income) expense, net	(21,056)	(20,941)	(41,470)	(36,388)
Income tax expense (benefit)	(439)	(216)	(2,160)	149
Other segment expenses	(91)	217	(211)	1,110
Net income (loss)	$ 89,297	$ (10,099)	$ 115,455	$ (585,165)

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Segment and Geographic Information - Schedule of Segment Net Income (Loss), Adjusted Cost of Revenue Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Cost of revenue	$ 45,900	$ 29,501	$ 82,989	$ 57,117
Reportable Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Cost of revenue	45,900	29,501	82,989	57,117
Stock-based compensation and related taxes	95,104	66,772	202,509	662,309
Adjusted cost of revenue	45,696	29,440	82,568	56,798
Cost of revenue | Reportable Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Stock-based compensation and related taxes	$ 204	$ 61	$ 421	$ 319

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Segment and Geographic Information - Schedule of Segment Net Income (Loss), Adjusted Operating Expenses Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and amortization	$ 3,934	$ 3,770	$ 7,897	$ 7,513
Reportable Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expenses	386,016	282,722	737,385	1,087,324
Stock-based compensation and related taxes	95,104	66,772	202,509	662,309
Depreciation and amortization	3,934	3,770	7,897	7,513
Adjusted operating expenses	287,182	212,241	527,400	417,821
Operating expenses | Reportable Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Stock-based compensation and related taxes	94,900	66,711	202,088	661,990
Depreciation and amortization	$ 3,934	$ 3,770	$ 7,897	$ 7,513