Capital Stock and Warrants

12 Months Ended

Dec. 31, 2023

Equity [Abstract]

Capital Stock and Warrants

Capital Stock and Warrants

Common Stock

Public Offering

On August 15, 2023, the Company closed on a public offering of 5,750,000 units at a public offering price of $0.65 per unit. Each unit consisted of one share of common stock and one warrant to purchase one share of common stock. The warrants, when issued, were immediately exercisable at an exercise price of $0.65 per share and expire five years from the date of issuance. The shares of common stock and accompanying warrants could only be purchased together during the offering, but were immediately separable upon issuance. The Company received cash proceeds of $3,125 from the offering, net of $613 in issuance costs.

Registered Direct Offering and Private Placement

On May 3, 2023, the Company entered into a securities purchase agreement (the “Purchase Agreement”) with an institutional investor and an existing investor, pursuant to which the Company agreed to issue and sell (i) an aggregate of 931,600 shares (the “Shares”) of the Company’s common stock, par value $0.01 per share, (ii) a pre-funded warrant (the “Pre-Funded Warrant”) to purchase 75,110 shares of common stock, and (iii) private placement warrants (the “Private Warrants”) to purchase an aggregate of 1,006,710 shares of common stock. The Shares, Pre-Funded Warrant and Private Warrants were sold on a combined basis for consideration equating to $2.98 for one Share and a Private Warrant to purchase one underlying share of common stock (or in lieu thereof, $2.9799 for a Pre-Funded Warrant to purchase one underlying share of common stock and a Private Warrant to purchase one underlying share of common stock). The exercise price of the Pre-Funded Warrant was $0.0001 per underlying share. The exercise price of the Private Warrant is $2.98 per underlying share.

The Shares and the Pre-Funded Warrant were offered pursuant to an effective registration statement on Form S-3 (File No. 333-254830), as initially filed with the SEC on March 29, 2021, and declared effective by the SEC on April 2, 2021. The Pre-Funded Warrant was fully exercised on May 12, 2023 and converted to 75,110 shares of the Company's common stock. The Private Warrant was sold in a concurrent private placement (the “Private Placement”), exempt from registration pursuant to Section 4(a)(2) and/or Rule 506 of the Securities Act of 1933, as amended (the “Securities Act”). The Private Warrants become exercisable beginning six months from the date of issuance, on November 6, 2023, and terminate on the fifth anniversary of that date.

Combined proceeds from the registered direct offering and private placement were $3,000 before issuance costs of $283.

At-The-Market ("ATM") Program

On January 24, 2023, the Company entered into an Equity Distribution Agreement (the "Sales Agreement") with Maxim Group LLC ("Maxim") under which the Company could offer and sell shares of its common stock, $0.01 par value per share, having an aggregate offering price of up to $4,200 from time to time through Maxim, acting exclusively as the Company's sales agent. Maxim was entitled to compensation at a fixed commission rate of 2.75% of the gross sales price for each share sold. Effective May 3, 2023, the Company terminated the Sales Agreement after issuing a total of 94,665 shares

of common stock at per share prices between $3.03 and $4.08, resulting in gross proceeds to the Company of $299 before offering costs and sales commissions totaling $196.

Board of Director Stock Issuances

During the year ended December 31, 2023, certain members of the Company's Board of Directors elected to receive 99,237 shares of Yield10 common stock in lieu of receiving $49 in cash compensation payments for their services to the board and board committees.

Preferred Stock

The Company's certificate of incorporation, as amended and restated, authorizes it to issue up to 5,000,000 shares of $0.01 par value preferred stock.

Warrants

The following table summarizes information with regard to outstanding warrants to purchase common stock as of December 31, 2023:

Issuance	Number of Common Shares Issuable Upon Exercise of Outstanding Warrants	Exercise Price		Expiration Date
August 2023 Public Offering	5,750,000	$	0.65	August 15, 2028
May 2023 Registered Direct and Concurrent Private Placement	1,006,710	$	2.98	November 6, 2028
November 2019 Public Offering - Series B	395,528	$	8.00	May 19, 2027
November 2019 Private Placement - Series B	718,750	$	8.00	May 19, 2027
July 2017 Registered Direct Offering	14,270	$	201.60	January 7, 2024
Consultant	750	$	116.00	September 11, 2024
Total	7,886,008

Reserved Shares

The following shares of common stock were reserved for future issuance upon exercise of stock options, vesting of Restricted Stock Units ("RSUs") and conversion of outstanding warrants:

	December 31, 2023	December 31, 2022
Stock Options	1,338,921	979,748
RSUs	—	27,123
Warrants	7,886,008	1,129,298
Total number of common shares reserved for future issuance	9,224,929	2,136,169