10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended June 30, 2018

OR

☐ 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 001-09585

ABIOMED, INC.

(Exact name of registrant as specified in its charter)

DELAWARE	04-2743260
(State or other jurisdiction of incorporation or organization)	(IRS Employer Identification No.)

22 CHERRY HILL DRIVE

DANVERS, MASSACHUSETTS 01923

(Address of principal executive offices, including zip code)

(978) 646-1400

(Registrant’s telephone number, including area code)

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  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 229.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ☒    No  ☐

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	☒		Accelerated filer	☐
Non-accelerated filer	☐	(Do not check if a smaller reporting company)	Smaller reporting company	☐
Emerging growth company	☐

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.  ☐

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

As of July 27, 2018, 44,877,160 shares of the registrant’s common stock, $.01 par value, were outstanding.

ABIOMED, INC. AND SUBSIDIARIES

TABLE OF CONTENTS

		Page
PART I - FINANCIAL INFORMATION:
Item 1.	Condensed Consolidated Financial Statements (unaudited)	3
	Condensed Consolidated Balance Sheets as of June 30, 2018 and March 31, 2018	3
	Condensed Consolidated Statements of Operations for the three months ended June 30, 2018 and 2017	4
	Condensed Consolidated Statements of Comprehensive Income for the three months ended June 30, 2018 and 2017	5
	Condensed Consolidated Statements of Cash Flows for the three months ended June 30, 2018 and 2017	6
	Notes to Condensed Consolidated Financial Statements (unaudited)	7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	21
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	30
Item 4.	Controls and Procedures	30
PART II - OTHER INFORMATION:
Item 1.	Legal Proceedings	31
Item 1A.	Risk Factors	31
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	31
Item 3.	Defaults Upon Senior Securities	31
Item 4.	Mine Safety Disclosures	31
Item 5.	Other Information	31
Item 6.	Exhibits	32
SIGNATURES		34

NOTE REGARDING COMPANY REFERENCES

Throughout this report on Form 10-Q (the “Report”), “Abiomed, Inc.,” the “Company,” “we,” “us” and “our” refer to ABIOMED, Inc. and its consolidated subsidiaries.

NOTE REGARDING TRADEMARKS

ABIOMED, IMPELLA, IMPELLA 2.5, IMPELLA 5.0, IMPELLA LD, IMPELLA CP, IMPELLA RP, IMPELLA BTR, IMPELLA 5.5, and IMPELLA ECP are trademarks of ABIOMED, Inc., and are registered in the U.S. and certain foreign countries. AB5000 and cVAD REGISTRY are trademarks of ABIOMED, Inc. 

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PART 1. FINANCIAL INFORMATION

ITEM 1: FINANCIAL STATEMENTS

ABIOMED, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(in thousands, except share data)

	June 30, 2018			March 31, 2018
ASSETS
Current assets:
Cash and cash equivalents	$	61,288		$	42,975
Short-term marketable securities		299,228			319,274
Accounts receivable, net		67,511			70,010
Inventories		55,781			50,204
Prepaid expenses and other current assets		13,489			11,808
Total current assets		497,297			494,271
Long-term marketable securities		6,887			37,502
Property and equipment, net		127,324			117,167
Goodwill		33,948			35,808
In-process research and development		15,837			16,705
Long-term deferred tax assets, net		115,049			70,746
Other assets		15,697			14,176
Total assets	$	812,039		$	786,375
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	25,673		$	23,565
Accrued expenses		38,930			46,147
Deferred revenue		12,075			14,970
Total current liabilities		76,678			84,682
Other long-term liabilities		815			776
Contingent consideration		10,331			10,490
Long-term deferred tax liabilities		856			903
Total liabilities		88,680			96,851
Commitments and contingencies (Note 11)
Stockholders' equity:
Class B Preferred Stock, $.01 par value		—			—
Authorized - 1,000,000 shares; Issued and outstanding - none
Common stock, $.01 par value		449			444
Authorized - 100,000,000 shares; Issued - 46,767,984shares at June 30, 2018 and 46,100,649 shares at March 31, 2018
Outstanding - 44,876,271 shares at June 30, 2018 and 44,375,337 shares at March 31, 2018
Additional paid in capital		637,974			619,905
Retained earnings		230,523			140,457
Treasury stock at cost - 1,891,713 shares at June 30, 2018 and 1,725,312 shares at March 31, 2018		(134,674	)		(67,078	)
Accumulated other comprehensive loss		(10,913	)		(4,204	)
Total stockholders' equity		723,359			689,524
Total liabilities and stockholders' equity	$	812,039		$	786,375

The accompanying notes are an integral part of the condensed consolidated financial statements (unaudited)

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ABIOMED, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

(in thousands, except per share data)

	For the Three Months Ended June 30,
	2018			2017
Revenue	$	180,010		$	132,468
Costs and expenses:
Cost of revenue		30,850			21,862
Research and development		21,273			16,931
Selling, general and administrative		81,139			60,597
		133,262			99,390
Income from operations		46,748			33,078
Other income:
Investment income, net		1,551			635
Other income, net		188			79
		1,739			714
Income before income taxes		48,487			33,792
Income tax benefit		(41,579	)		(3,582	)
Net income	$	90,066		$	37,374
Basic net income per share	$	2.02		$	0.85
Basic weighted average shares outstanding		44,546			43,895
Diluted net income per share	$	1.95		$	0.82
Diluted weighted average shares outstanding		46,169			45,608

The accompanying notes are an integral part of the condensed consolidated financial statements (unaudited)

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ABIOMED, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

(in thousands)

	For the Three Months Ended June 30,
	2018			2017
Net income	$	90,066		$	37,374
Other comprehensive (loss) gain:
Foreign currency translation (losses) gains		(6,852	)		6,153
Net unrealized gains (losses) on marketable securities		143			(55	)
Other comprehensive (loss) gain		(6,709	)		6,098
Comprehensive income	$	83,357		$	43,472

The accompanying notes are an integral part of the condensed consolidated financial statements (unaudited)

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ABIOMED, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(in thousands)

	For the Three Months Ended June 30,
	2018			2017
Operating activities:
Net income	$	90,066		$	37,374
Adjustments required to reconcile net income to net cash provided by    operating activities:
Depreciation expense		2,959			2,463
Bad debt expense (recovery)		188			(42	)
Stock-based compensation		12,245			8,656
Write-down of inventory and other		897			510
Accretion on marketable securities		(363	)		—
Deferred tax provision		(44,463	)		(3,830	)
Change in fair value of contingent consideration		(159	)		265
Changes in assets and liabilities:
Accounts receivable		1,930			795
Inventories		(7,794	)		(1,302	)
Prepaid expenses and other assets		(2,131	)		(915	)
Accounts payable		2,684			(4,391	)
Accrued expenses and other liabilities		(6,576	)		(2,436	)
Deferred revenue		(2,852	)		(853	)
Net cash provided by operating activities		46,631			36,294
Investing activities:
Purchases of marketable securities		(24,702	)		(73,626	)
Proceeds from the sale and maturity of marketable securities		75,782			66,622
Purchase of other investment		(1,166	)		(400	)
Purchases of property and equipment		(15,147	)		(9,804	)
Net cash provided by (used for) investing activities		34,767			(17,208	)
Financing activities:
Proceeds from the exercise of stock options		5,798			3,555
Taxes paid related to net share settlement of vesting of stock awards		(67,598	)		(17,805	)
Principal payments on capital lease obligation		—			(184	)
Net cash used for financing activities		(61,800	)		(14,434	)
Effect of exchange rate changes on cash		(1,285	)		278
Net increase in cash and cash equivalents		18,313			4,930
Cash and cash equivalents at beginning of period		42,975			39,040
Cash and cash equivalents at end of period	$	61,288		$	43,970
Supplemental disclosure of cash flow information:
Cash paid for income taxes	$	2,956		$	479
Cash paid for interest on capital lease obligation		—			130
Supplemental disclosure of non-cash investing and financing activities:
Property and equipment in accounts payable and accrued expenses		3,196			1,872

The accompanying notes are an integral part of the condensed consolidated financial statements (unaudited)

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ABIOMED, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

(In thousands, except share data)

Note 1. Nature of Business

ABIOMED, Inc. (the “Company” or “Abiomed”) is a provider of mechanical circulatory support devices and offers a continuum of care to heart failure patients. The Company develops, manufactures and markets proprietary products that are designed to enable the heart to rest, heal and recover by improving blood flow and/or performing the pumping function of the heart. The Company’s products are used in the cardiac catheterization lab, or cath lab, by interventional cardiologists and in the heart surgery suite by cardiac surgeons for patients who are in need of hemodynamic support prophylactically or emergently before, during or after angioplasty or heart surgery procedures.

Note 2. Basis of Preparation and Summary of Significant Accounting Policies

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles, or GAAP, for interim financial reporting and in accordance with Article 10 of Regulation S-X. Accordingly, they do not include all of the information and note disclosures required by GAAP for complete financial statements. These statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2018 that has been filed with the Securities and Exchange Commission (“SEC”).

In the opinion of management, the accompanying unaudited condensed consolidated financial statements include all normal and recurring adjustments that are necessary for a fair presentation of results for the interim periods presented. The results of operations for any interim period may not be indicative of results for the full fiscal year or any other subsequent period.

There have been no changes in the Company’s significant accounting policies for the three months ended June 30, 2018 as compared to the significant accounting policies described in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2018 that has been filed with the SEC.

New Accounting Pronouncements Adopted

Effective April 1, 2018, the Company adopted the Financial Accounting Standards Board (“FASB”) standard update ASU 2014-09, “Revenue from Contracts with Customers,” (“Topic 606”) which provides a principles-based, five-step approach to measure and recognize revenue from contracts with customers. The adoption of this guidance did not have a material impact on the Company’s consolidated results of operations, cash flows, and financial position. Additional information and disclosures required by this new standard are contained in “Note 4. Revenue Recognition,” to the Company’s consolidated financial statements.

Effective April 1, 2018, the Company adopted the FASB standard update ASU 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities,” which requires certain financial assets to be measured at fair value with changes in fair value recognized in the statement of operations. The adoption of this guidance did not have a material impact on the Company’s consolidated results of operations, cash flows, and financial position. Additional information and disclosures required by this new standard are contained in “Note 5. Cash Equivalents, Marketable Securities, and Fair Value Measurements,” to the Company’s consolidated financial statements.

On June 20, 2018, the FASB issued ASU 2018-07, “Compensation – Stock Compensation (“Topic 718”): Improvements to Nonemployee Share-Based Payment Accounting,” which simplifies the accounting for share-based payments granted to nonemployees for goods and services. ASU 2018-07 eliminated the previous guidance for accounting for share-based payments to nonemployees and expand Topic 718 to include share-based payments transactions to nonemployees. ASU 2018-07 is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. Early adoption is permitted, but no earlier than an entity’s adoption date of Topic 606. The adoption of ASU 2018-07 requires a modified retrospective transition approach, with a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year. The Company early adopted ASU 2018-07 on June 20, 2018. The adoption of this guidance did not have a material impact on the Company’s consolidated results of operations, cash flows, and financial position.

Recent Accounting Pronouncements

In February 2016, the FASB issued ASU 2016-02, “Leases.” The new guidance significantly impacts lessee accounting and financial statement disclosures.  Specifically, this guidance requires lessees to identify arrangements that should be accounted for as leases. Under this guidance, for lease arrangements exceeding a one year term, a right-of-use asset and lease obligation is recorded by the lessee for all leases on the balance sheet, whether operating or financing, while the statement of operations includes lease expense

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for operating leases and amortization and interest expense for financing leases. The balance sheet amount recorded at the date of adoption of this guidance must be calculated using the applicable incremental borrowing rate at the date of adoption. Leases with a term of one year or less will be accounted for similar to existing guidance for operating leases. The Company is currently in the process of evaluating its lessee arrangements to determine the impact of ASU 2016-02 on its consolidated financial statements. This evaluation includes a review of the Company’s existing leasing arrangements on its facilities. The Company currently expects that its lease commitments will be recognized as operating lease liabilities and right-of-use assets upon adoption, which will increase total assets and total liabilities that the Company reports relative to such amounts prior to adoption.ASU 2016-02 must be adopted using a modified retrospective approach for all leases existing at, or entered into after the date of initial adoption, with an option to elect to use certain transition relief.  ASU 2016-02 will become effective for the Company on April 1, 2019.

Note 3. Net Income Per Share

Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per share is computed by dividing net income by the weighted average number of dilutive common shares outstanding during the period. Diluted shares outstanding are calculated by adding to the weighted average shares outstanding any potential dilutive securities outstanding for the period. Potential dilutive securities include stock options, restricted stock units, performance-based stock awards and shares to be purchased under the Company’s employee stock purchase plan. The Company’s basic and diluted net income per share for the three months ended June 30, 2018 and 2017 were as follows (in thousands, except per share data):

	For the Three Months Ended June 30,
	2018		2017
Basic Net Income Per Share
Net income	$	90,066	$	37,374
Weighted average shares used in computing basic net    income per share		44,546		43,895
Net income per share - basic	$	2.02	$	0.85

	For the Three Months Ended June 30,
	2018		2017
Diluted Net Income Per Share
Net income	$	90,066	$	37,374
Weighted average shares used in computing basic net    income per share		44,546		43,895
Effect of dilutive securities		1,623		1,713
Weighted average shares used in computing diluted    net income per share		46,169		45,608
Net income per share - diluted	$	1.95	$	0.82

For the three months ended June 30, 2018, approximately 36,000 shares underlying out-of-the-money stock options were excluded in the computation of diluted earnings per share because their effect would have been anti-dilutive. Also, approximately 85,000 restricted shares in the three months ended June 30, 2018, related to performance-based awards for which milestones have not been met, were not included in the computation of diluted earnings per share.

For the three months ended June 30, 2017, approximately 54,000 shares underlying out-of-the-money stock options were excluded in the computation of diluted earnings per share because their effect would have been anti-dilutive. Also, approximately 80,000restricted shares in the three months ended June 30, 2017, related to performance-based and market-based awards for which milestones have not been met, were not included in the computation of diluted earnings per share.

Note 4. Revenue Recognition

Adoption of Topic 606, Revenue from Contracts with Customers

The Company adopted Topic 606 on April 1, 2018, using the modified retrospective method for all contracts not completed as of the date of adoption. The reported results for fiscal year 2019 reflect the application of Topic 606 guidance while the reported

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results for fiscal year 2018 were prepared under the guidance of ASC 605, “Revenue Recognition.” The adoption of Topic 606 did not have a material impact on the timing or amount of revenue recognized upon adoption and there was no cumulative prior period adjustment recorded to the opening balance of retained earnings upon adoption. Accordingly, the adoption of Topic 606 did not have a material impact on the Company’s consolidated financial position, results of operations, equity or cash flows as of the adoption date or for the three months ended June 30, 2018.

The Company has made the following accounting policy elections and elected to use certain practical expedients, as permitted by the FASB, in applying Topic 606: (1) the Company accounts for amounts collected from customers for sales and other taxes, net of related amounts remitted to tax authorities; (2) the Company does not adjust the promised amount of consideration for the effects of a significant financing component because, at contract inception, the Company expects the period between the time when the Company transfers a promised good or service to the customer and the time when the customer pays for that good or service will be one year or less; (3) the Company expenses costs to obtain a contract as they are incurred if the expected period of benefit, and therefore the amortization period, is one year or less; (4) the Company accounts for shipping and handling activities that occur after control transfers to the customer as a fulfillment cost rather than an additional promised service and these fulfillment costs fall within selling, general and administrative expenses; (5) the Company does not assess whether promised goods or services are performance obligations if they are immaterial in the context of the contract with the customer; and (6) the Company does not disclose the transaction price allocated to unsatisfied performance obligations when the original expected contract duration is one year or less.

The Company generates revenue primarily from the sale of Impella 2.5, Impella CP, Impella 5.0, Impella LD, Impella RP and Impella AIC devices. The Company also generates revenue from preventative maintenance service contracts and maintenance calls.

The Company determines revenue recognition through the following steps:

• Identification of the contract, or contracts, with a customer

• Identification of the performance obligation in the contract

• Determination of the transaction price

• Allocation of the transaction price to the performance obligation in the contract

• Recognition of revenue when, or as, a performance obligation is satisfied

Contracts and Performance Obligations

The Company accounts for a contract with a customer when there is an approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of the consideration is probable. The Company's performance obligations consist mainly of transferring control of products and services identified in the contracts, purchase orders or invoices. For each contract, the Company considers the obligation to transfer products and services to the customer, each of which are distinct, to be performance obligations.

Transaction price and allocation to performance obligations

Transaction prices of products or services are typically based on contracted rates. To the extent that the transaction price includes variable consideration, the Company estimates the amount of variable consideration that should be included in the transaction price utilizing the expected value method or the most likely amount, depending on the circumstances, to which the Company expects to be entitled. Variable consideration is included in the transaction price if, in the Company’s judgment, it is probable that a significant future reversal of cumulative revenue under the contract will not occur.  Estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on an assessment of the Company’s anticipated performance and all information (historical, current and forecasted) that is reasonably available.  Sales and other taxes collected on behalf of third parties are excluded from revenue.

The Company does not provide for rights of return to customers on product sales and, therefore, does not record a provision for returns. Customers typically have a limited time frame to notify the Company of any defective or non-conforming products. The Company’s limited warranty provision is accounted for using the cost accrual method and is recognized as expense when products are sold and is not considered a separate performance obligation.

If a contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price based on the estimated relative standalone selling prices of the promised products or services underlying each performance obligation. The Company determines standalone selling prices based on the price at which the performance obligation is sold separately.  

9

Revenue Recognition

Revenue is recognized when, or as, obligations under the terms of a contract are satisfied, which occurs when control of the promised products or services is transferred to customers.  Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products or services to a customer.

Product revenue is generally recognized when the customer obtains control of the Company’s product, which occurs at a point in time, and may be upon shipment or upon delivery based on the contractual shipping terms of a contract.

Service revenue is generally recognized over time as the services are rendered to the customer based on the extent of progress towards completion of the performance obligation. The Company recognizes service revenue over the term of the service contract. Services are expected to be transferred to the customer throughout the term of the contract and the Company believes recognizing revenue ratably over the term of the contract best depicts the transfer of value to the customer. Revenue generated from preventative maintenance calls is recognized at a point in time when the services are provided to the customer.

Revenue from the sale of products and services are evidenced by either a contract with the customer or a valid purchase order and an invoice which includes all relevant terms of sale. The Company performs a review of each specific customer's credit worthiness and ability to pay prior to acceptance as a customer. Further, the Company performs periodic reviews of its customers' creditworthiness prospectively.

Disaggregation of Revenue

The Company generally sells its Impella products and services through a direct sales force in the U.S. and through direct sales and distribution agreements in international markets outside of the U.S., primarily in Japan and certain European countries (eg: Germany, France, Switzerland). Revenue is disaggregated from contracts between products and services and by geography, which the Company believes best depicts how the nature, amount, timing, and uncertainty of revenues and cash flows are affected by economic factors.

The following table disaggregates the Company’s revenue:

	For the Three Months Ended June 30,
		2018		2017
	(in $000's)
Impella product revenue	$	173,675	$	127,193
Service and other revenue		6,335		5,275
Total revenue	$	180,010	$	132,468

The following table disaggregates the Company’s revenue by geographical location:

	For the Three Months Ended June 30,
		2018		2017
	(in $000's)
U.S. revenue	$	157,595	$	119,665
International revenue		22,415		12,803
Total revenue	$	180,010	$	132,468

Reserves for Variable Consideration

Revenues from product sales are recorded at the net sales price (transaction price), which includes estimates of variable consideration for which reserves are established and which result from discounts or rebates that are offered within contracts between the Company and its customers relating to the Company’s sales of its products.  These reserves are based on the amounts earned or are expected to be claimed on the related sales and are classified as reductions of accounts receivable.  Where appropriate, these estimates take into consideration relevant factors such as the Company’s historical experience, current contractual and statutory requirements, specific known market events and trends, industry data and forecasted customer buying and payment patterns.  These reserves reflect the Company’s best estimates of the amount of consideration to which it is entitled based on the terms of the contract.  Actual amounts of consideration ultimately received may differ from the Company’s estimates.  If actual results in the future vary from the Company’s estimates, the Company adjusts these estimates, which would affect net product revenue and earnings in the period such variances become known.

10

Rebates and Discounts  

The Company provides certain customers with rebates and discounts that are defined in the Company’s contract arrangements with customers and are recorded as a reduction of revenue in the period the related product revenue is recognized, resulting in a reduction to revenue and the establishment of a liability, which are all included in accrued expenses in the accompanying unaudited consolidated balance sheets. Rebates normally result from performance-based offers that are primarily based on attaining contractually specified sales volumes as well as product usage.  Discounts are normally from early payment incentives. The Company estimates the amount of rebates and discounts based on an estimate of the third party’s sales and the respective rebate, and the discount defined in the customer contractual arrangement.

The following table summarizes activity in each of the product revenue rebate and discount categories for the three months ended June 30, 2018 (in thousands):

	Rebates and Discounts
Balance at March 31, 2018	$	1,405
Provision related to current period sales		442
Credits and adjustments made during the period		(396	)
Balance at June 30, 2018	$	1,451

Contract Balances

The timing of revenue recognition, billings and cash collections results in trade receivables and deferred revenue on the consolidated balance sheet. A receivable is recognized in the period the Company’s right to the consideration is unconditional. The change in the accounts receivable and unbilled receivable balances relate to the timing of revenue recognition, billings and cash collections. The Company generally does not have any contracts or performance obligations with a term of more than one year.

Payment terms vary by contract type and type of customer and generally range from 30 to 60 days. The Company’s contracts with customers do not typically include extended payment terms.

Deferred Revenue

When consideration is received, or such consideration is unconditionally due, from a customer prior to transferring goods or services to the customer under the terms of a contract, deferred revenue is recorded. Deferred revenue is recognized as revenue after control of the products or services is transferred to the customer and all revenue recognition criteria have been met.

The Company’s deferred revenue balance was $12.1 million as of June 30, 2018 and $15.0 million as of March 31, 2018. The change relates to the timing of product shipment and completion of recognizing revenue when the customer obtains control of the product and additional preventative maintenance service contracts and the subsequent recognition of the contract ratably over the term of the service contract. During the three months ended June 30, 2018, the Company recognized $8.6 million of revenue that was included in the deferred revenue balance as of March 31, 2018.

Costs to Obtain or Fulfill a Customer Contract

The Company has certain costs to obtain and fulfill a customer contract, such as commissions and shipping costs, respectively. The Company recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that the Company otherwise would have recognized is one year or less. The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill the promise to transfer the associated products. These costs are included in selling, general, and administrative expenses.

Note 5. Cash Equivalents, Marketable Securities and Fair Value Measurements

The Company classifies any marketable security with a maturity date of 90 days or less at the time of purchase as a cash equivalent. Cash equivalents are carried on the balance sheet at fair market value. The Company’s marketable securities, consisting of U.S. Treasuries, U.S. Government Agency, and corporate debt securities, are classified as available-for-sale securities and, accordingly, are recorded at fair value. The difference between amortized cost and fair value is included in stockholders’ equity. At June 30, 2018 and March 31, 2018, the Company’s financial instruments consist primarily of cash and cash equivalents, marketable securities, accounts receivable, accounts payable and contingent consideration. The carrying amounts of accounts receivable and accounts payable are considered reasonable estimates of their fair value, due to the short maturity of these investments.

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The Company’s cash equivalents and marketable securities at June 30, 2018 and March 31, 2018 are classified on the balance sheet as follows:

	June 30, 2018		March 31, 2018
	(in $000's)
Cash equivalents	$	29,910	$	22,595
Short-term marketable securities		299,228		319,274
Long-term marketable securities		6,887		37,502
	$	336,025	$	379,371

The Company’s cash equivalents and marketable securities at June 30, 2018 and March 31, 2018 are invested in the following:

	Amortized		Gross Unrealized		Gross Unrealized			Fair Market
	Cost		Gains		Losses			Value
	(in $000's)
June 30, 2018:
Money market funds	$	29,910	$	—	$	—		$	29,910
Short-term U.S. Treasury mutual fund securities		23,024		—		(44	)		22,980
Short-term government-backed securities		210,836		—		(463	)		210,373
Short-term corporate debt securities		36,439		—		(97	)		36,342
Short-term commercial paper		29,549		—		(16	)		29,533
Long-term U.S. Treasury mutual fund securities		6,888		—		(1	)		6,887
	$	336,646	$	—	$	(621	)	$	336,025

	Amortized		Gross Unrealized		Gross Unrealized			Fair Market
	Cost		Gains		Losses			Value
	(in $000's)
March 31, 2018:
Money market funds	$	5,845	$	—	$	—		$	5,845
Repurchase agreements		16,750		—		—			16,750
Short-term U.S. Treasury mutual fund securities		18,132		—		(29	)		18,103
Short-term government-backed securities		212,255		3		(538	)		211,720
Short-term corporate debt securities		52,737		—		(161	)		52,576
Short-term commercial paper		36,936		2		(63	)		36,875
Long-term U.S. Treasury mutual fund securities		10,953		—		(16	)		10,937
Long-term government-backed securities		24,798		1		(12	)		24,787
Long-term corporate debt securities		1,777		1		—			1,778
	$	380,183	$	7	$	(819	)	$	379,371

Fair Value Hierarchy

Fair value is defined as the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Financial assets and liabilities carried at fair value are to be classified and disclosed in one of the following three categories:

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 that are not corroborated by market data.

Level 1 primarily consists of financial instruments whose values are based on quoted market prices such as exchange-traded instruments and listed equities.

Level 2 includes financial instruments that are valued using models or other valuation methodologies. These models are primarily industry-standard models that consider various assumptions, including time value, yield curve, volatility factors, prepayment speeds, default rates, loss severity, current market and contractual prices for the underlying financial instruments, as well as other

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relevant economic measures. Substantially all of these assumptions are observable in the marketplace, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace.

Level 3 is comprised of unobservable inputs that are supported by little or no market activity. Financial assets are considered Level 3 when their fair values are determined using pricing models, discounted cash flows, or similar techniques, and at least one significant model assumption or input is unobservable.

The following table presents the Company’s financial instruments recorded at fair value in the condensed consolidated balance sheets, classified according to the three categories described above:

	Level 1		Level 2		Level 3		Total
June 30, 2018:	(in $000's)
Assets
Money market funds	$	29,910	$	—	$	—	$	29,910
Short-term U.S. Treasury mutual fund securities		—		22,980		—		22,980
Short-term government-backed securities		—		210,373		—		210,373
Short-term corporate debt securities		—		36,342		—		36,342
Short-term commercial paper		—		29,533		—		29,533
Long-term U.S. Treasury mutual fund securities		—		6,887		—		6,887
Liabilities
Contingent consideration		—		—		10,331		10,331

	Level 1		Level 2		Level 3		Total
March 31, 2018:	(in $000's)
Assets
Money market funds	$	5,845	$	—	$	—	$	5,845
Repurchase agreements		—		16,750		—		16,750
Short-term U.S. Treasury mutual fund securities		—		18,103		—		18,103
Short-term government-backed securities		—		211,720		—		211,720
Short-term corporate debt securities		—		52,576		—		52,576
Short-term commercial paper		—		36,875		—		36,875
Long-term U.S. Treasury mutual fund securities		—		10,937		—		10,937
Long-term government-backed securities		—		24,787		—		24,787
Long-term corporate debt securities		—		1,778		—		1,778
Liabilities
Contingent consideration		—		—		10,490		10,490

The Company has determined that the estimated fair value of its money market funds are reported as Level 1 financial assets as they are valued at quoted market prices in active markets.

The Company has determined that the estimated fair value of its investments in U.S. Treasury mutual fund securities, government-backed securities, corporate debt securities, repurchase agreements and commercial paper are reported as Level 2 financial assets as they are not exchange-traded instruments.

The Company’s financial liabilities consisted of contingent consideration potentially payable related to the acquisition of ECP Entwicklungsgesellschaft mbH, (“ECP”) and AIS GmbH Aachen Innovative Solutions, or AIS, in July 2014. The Company acquired ECP for $13.0 million in cash, with additional potential payouts totaling $15.0 million based on the achievement of CE Mark approval in the European Union and a revenue-based milestone related to the development of the future Impella ECP^TM expandable catheter pump technology. These potential milestone payments may be made, at the Company’s option, by a combination of cash or Abiomed common stock. As of June 30, 2018, the Company used a combination of an income approach, based on various revenue and cost assumptions and applying a probability to each outcome and a Monte-Carlo valuation model. For the clinical and regulatory milestone, probabilities were applied to each potential scenario and the resulting values were discounted using a rate that considers weighted average cost of capital as well as a specific risk premium associated with the riskiness of the earn out itself, the related projections, and the overall business. The revenue-based milestone is valued using a Monte-Carlo valuation model, which simulates estimated future revenues during the earn out-period using management's best estimates. Projected revenues are based on our most recent internal operational budgets and long-range strategic plans.

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This liability is reported as Level 3 as the estimated fair value of the contingent consideration related to the acquisition of ECP requires significant management judgment or estimation and is calculated using the following valuation methods:

	Milestone Payment		Fair Value at June 30, 2018 (in $000's)		Valuation Methodology	Significant Unobservable Input	Weighted Average (range, if applicable)
Clinical and regulatory milestone	$	7,000	$	5,712	Probability weighted income approach	Projected fiscal year of milestone payments	2019 to 2022
						Discount rate	3.9% to 4.2%
						Probability of occurrence	Probability adjusted level of 40% for the base case scenario and 10% to 40% for various upside and downside scenarios
Revenue-based milestone		8,000		4,619	Monte Carlo simulation model	Projected fiscal year of milestone payments	2024 to 2035
						Discount rate	14%
						Expected volatility for forecasted revenues	50%
						Probability of payment	78%
	$	15,000	$	10,331

The following table summarizes the change in fair value, as determined by Level 3 inputs, of the contingent consideration for the three months ended June 30, 2018 and 2017:

	For the Three Months Ended June 30,
		2018			2017
	(in $000's)
Level 3 liabilities, beginning balance	$	10,490		$	9,153
Additions		—			—
Payments		—			—
Change in fair value		(159	)		265
Level 3 liabilities, ending balance	$	10,331		$	9,418

The change in fair value of the contingent consideration was primarily due to the impact of changes in interest rates, passage of time on the fair value measurement and the status of development of the underlying technology related to the ECP acquisition. Adjustments associated with the change in fair value of contingent consideration are included in research and development expenses in the Company’s condensed consolidated statements of operations. Significant increases or decreases in any of the probabilities of success or changes in expected timelines for achievement of any of these milestones could result in a significantly higher or lower fair value of the liability. The fair value of the contingent consideration at each reporting date is updated by reflecting the changes in fair value in the Company’s statement of operations. There is no assurance that any of the conditions for the milestone payments will be met. 

Other Investments

The Company periodically makes investments in private medical device companies that focus on heart failure, heart pump and other medical device technologies. The aggregate carrying amount of the Company’s other investments was $13.8 million and $12.6

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million at June 30, 2018 and March 31, 2018, respectively, and is classified within other assets in the unaudited condensed consolidated balance sheets. During the three months ended June 30, 2018, the Company made an additional investment of $1.2 million in a private medical device company.

On August 1, 2018, the Company made an investment of approximately $5.8 million in a private medical device company.  The Company is evaluating the accounting for this transaction and will record the transaction during the quarter ended September 30, 2018.  

On April 1, 2018, the Company adopted ASU 2016-01. This guidance requires equity investments to be measured at fair value with changes in fair value recognized in net income.  Since these investments do not have readily determinable market values, the Company has elected to measure these investments at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investment.  No adjustments have been made to the value of the Company’s investments in these private medical device companies for the three months ended June 30, 2018 either due to impairment or based on observable price changes. The Company monitors any events or changes in circumstances that may have a significant adverse effect on the fair value of this investment and makes any necessary adjustments.

Note 6. Property and Equipment

The components of property and equipment are as follows:

	June 30, 2018			March 31, 2018
	(in $000's)
Land	$	7,437		$	7,680
Building and building improvements		63,829			63,700
Leasehold improvements		2,183			2,905
Machinery and equipment		47,766			42,787
Furniture and fixtures		8,187			8,104
Construction in progress		27,525			19,850
Total cost		156,927			145,026
Less accumulated depreciation		(29,603	)		(27,859	)
	$	127,324		$	117,167

Note 7. Goodwill and In-Process Research and Development

The carrying amount of goodwill at June 30, 2018 and March 31, 2018 was $33.9 million and $35.8 million, respectively, and has been recorded in connection with the Company’s acquisition of Impella Cardiosystems AG, in May 2005 and ECP and AIS in July 2014. The goodwill activity is as follows:

	(in $000's)
Balance at March 31, 2018	$	35,808
Foreign currency translation impact		(1,860	)
Balance at June 30, 2018	$	33,948

The Company evaluates goodwill and in-process research and development (“IPR&D”) assets at least annually at October 31, as well as whenever events or changes in circumstances suggest that the carrying amount may not be recoverable.  The Company has no accumulated impairment losses on goodwill or IPR&D assets.

The carrying amount of IPR&D assets at June 30, 2018 and March 31, 2018 was $15.8 million and $16.7 million, respectively, and was recorded in conjunction with the Company’s acquisition of ECP and AIS, in July 2014. The estimated fair value of IPR&D assets at the acquisition date was determined using a probability-weighted income approach, which discounts expected future cash flows to present value. The projected cash flow estimates for the future Impella ECP^TM expandable catheter pump technology were based on certain key assumptions, including estimates of future revenue and expenses, taking into account the stage of development of the technology at the acquisition date and the time and resources needed to complete development. The Company used an original discount rate of 21% and cash flows that have been probability adjusted to reflect the risks of product commercialization, which the Company believes are appropriate and representative of market participant assumptions.

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The carrying value of the Company’s IPR&D assets and the change in the balance for the three months ended June 30, 2018 are as follows:

	(in $000's)
Balance at March 31, 2018	$	16,705
Foreign currency translation impact		(868	)
Balance at June 30, 2018	$	15,837

Note 8. Accrued Expenses

Accrued expenses consist of the following:

	June 30, 2018		March 31, 2018
	(in $000's)
Employee compensation	$	24,267	$	30,330
Sales and income taxes		4,841		4,562
Research and development		2,373		3,162
Marketing		2,057		2,305
Professional, legal, and accounting fees		1,588		1,870
Warranty		1,086		1,081
Accrued capital expenditures		—		250
Other		2,718		2,587
	$	38,930	$	46,147

Employee compensation consists primarily of accrued bonuses, accrued commissions, accrued employee benefits, and accrued payroll taxes (on equity awards) at June 30, 2018 and March 31, 2018.

Note 9. Stock-Based Compensation

The following table summarizes stock-based compensation expense by financial statement line item in the Company’s condensed consolidated statements of operations for the three months ended June 30, 2018 and 2017:

	For the Three Months Ended June 30,
		2018		2017
	(in $000's)
Cost of product revenue	$	575	$	359
Research and development		1,966		1,339
Selling, general and administrative		9,704		6,958
	$	12,245	$	8,656

Stock Options

The following table summarizes the stock option activity for the three months ended June 30, 2018:

						Weighted
				Weighted		Average		Aggregate
				Average		Remaining		Intrinsic
	Options			Exercise		Contractual		Value
	(in thousands)			Price		Term (years)		(in thousands)
Outstanding at beginning of period		1,282		$	46.18		5.31
Granted		72			383.44
Exercised		(282	)		20.53
Cancelled and expired		(4	)		112.32
Outstanding at end of period		1,068		$	76.20		6.02	$	355,461
Exercisable at end of period		780		$	36.08		5.03	$	290,953
Options vested and expected to vest at end of period		1,048		$	76.12		5.99	$	348,886

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Stock options generally vest and become exercisable annually over three years. The remaining unrecognized stock-based compensation expense for unvested stock option awards at June 30, 2018 was approximately $18.0 million and the estimated weighted-average period over which this cost will be recognized is 2.5 years.

The aggregate intrinsic value of options exercised was $106.7 million for the three months ended June 30, 2018. The total cash received as a result of employee stock option exercises for the three months ended June 30, 2018 was approximately $5.8 million.

The Company estimates the fair value of each stock option granted at the grant date using the Black-Scholes option valuation model. The weighted average grant-date fair values and weighted average assumptions used in the calculation of fair value of options granted during the three months ended June 30, 2018 and 2017 was as follows:

	For the Three Months Ended June 30,
		2018			2017
Weighted average grant-date fair value	$	142.51		$	49.04
Valuation assumptions:
Risk-free interest rate		2.93	%		1.84	%
Expected option life (years)		4.04			4.07
Expected volatility		42.6	%		43.7	%

Restricted Stock Units

The following table summarizes activity of restricted stock units for the three months ended June 30, 2018:

	Number of Shares			Weighted Average Grant Date Fair Value
	(in thousands)			(per share)
Restricted stock units at beginning of period		880		$	109.01
Granted		183		$	378.88
Vested		(385	)	$	101.74
Forfeited		(7	)	$	145.52
Restricted stock units at end of period		671		$	186.48

Restricted stock units generally vest annually over three years. The remaining unrecognized compensation expense for outstanding restricted stock units, including performance and market-based awards, as of June 30, 2018 was $79.5 million and the estimated weighted-average period over which this cost will be recognized is 2.4 years.

The weighted average grant-date fair value for restricted stock units granted during the three months ended June 30, 2018 was $378.88. The total fair value of restricted stock units vested during the three months ended June 30, 2018 was $156.1 million.

Performance-Based Awards

In May 2018, performance-based awards of restricted stock units for the potential issuance of approximately 114,000 shares of common stock were issued to certain executive officers and employees, which vest upon achievement of prescribed service milestones by the award recipients and performance milestones by the Company. As of June 30, 2018, the Company is recognizing compensation expense based on the probable outcome related to the prescribed performance targets on the outstanding awards.

Note 10. Income Taxes

In December 2017, the Tax Cut and Jobs Act, (“Tax Reform Act”) was signed into law. The Tax Reform Act included significant changes to existing law, including among other items, a reduction to the U.S. federal statutory corporate tax rate from 35% to 21% effective January 1, 2018. ASC 740, Income Taxes (Topic 740) requires that the effects of changes in tax laws or rates be recognized in the period in which the law is enacted. Those effects, both current and deferred, are reported as part of the tax provision, regardless of income in which the underlying pretax income (expense) or asset (liability) was or will be reported.

As a result of the Tax Reform Act, the Company’s U.S. federal statutory corporate income tax rate of 21% was applied in the computation of the income tax provision for the three months ended June 30, 2018.

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The Company’s income tax benefit was $41.6 million and $3.6 million for the three months ended June 30, 2018 and 2017, respectively. The Company’s effective tax rate was (85.8)% and (10.6)% for the three months ended June 30, 2018 and 2017, respectively. Consistent with guidance issued by the SEC, which provides for a measurement period of one year from the enactment date to finalize the accounting for effects of the Tax Reform Act, the Company provisionally remeasured its net deferred tax assets due to the lower U.S. federal statutory corporate tax rate during the year ended March 31, 2018. The Company’s provisional estimate reflects estimable current year impacts of the Tax Reform Act on the Company’s estimated annual effective tax rate and discrete items resulting directly from the enactment of the Tax Reform Act based on the information available, prepared, or analyzed (including computations) in reasonable detail. Any adjustments to this provisional estimate will be recorded as adjustments to income tax expense in the period in which those adjustments become estimable and/or are finalized, if necessary. No adjustments were made to the Company’s provisional estimate during the three months ended June 30, 2018. The Company will continue to evaluate information related to the Tax Reform Act and could make additional adjustments in the future to its estimate of net deferred tax assets and income tax expense during the measurement period of one year from the enactment date.

The Company recognizes excess tax benefits and shortfalls in the income tax provision as discrete items in the period when restricted stock units vest or stock option exercises occur, whereas previously such income tax effects were recorded as part of additional paid-in capital only when the related tax deduction resulted in a reduction of current income taxes payable. The Company recognized excess tax benefits associated with stock-based awards of $53.8 million and $16.8 million as an income tax benefit for the three months ended June 30, 2018 and 2017, respectively. These recognized excess tax benefits resulted from restricted stock units that vested or stock options that were exercised during the three months ended June 30, 2018 and 2017, respectively. The amount of future excess tax benefits or shortfalls will likely fluctuate from period to period based on the price of the Company’s stock, the number of restricted stock unit vestings or stock option exercises, and the fair value assigned to such stock-based awards under U.S. GAAP.

The significant differences between the statutory income tax rate and effective income tax rate for the three months ended June 30, 2018 and 2017 were as follows:

	For the Three Months Ended June 30,
		2018			2017
Statutory income tax rate		21.0		%	35.0		%
Increase resulting from:
Excess tax benefits from stock-based awards		(111.0	)		(49.8	)
Credits		(1.8	)		(1.2	)
State taxes, net		4.3			3.5
Permanent differences		1.6			1.8
Other		0.1			0.1
Effective tax rate		(85.8	)	%	(10.6	)	%

The recently enacted Tax Reform Act allows for a 100% deduction for the potential repatriation of foreign subsidiary earnings with minimal U.S. income tax consequences other than the one-time deemed repatriation toll charge. Since most of the Company’s cash and cash equivalents held by foreign subsidiaries which are disregarded entities for domestic tax purposes, any repatriation of such funds to the U.S. would likely have a nominal tax impact.

The Company and its subsidiaries are subject to U.S. federal income tax, as well as income tax of multiple state and foreign jurisdictions. Fiscal years 2012 through 2017 remain open to examination in Germany and Abiomed Europe GmbH, the Company’s main operating subsidiary in Germany, is currently being audited for fiscal years 2012 through 2015. In July 2017, the Company was notified by the Internal Revenue Service, (“IRS”), that it has selected the Company’s federal tax return for fiscal 2016 for examination. All tax years remain subject to examination by the IRS and state tax authorities, because the Company has net operating loss and tax credit carryforwards which may be utilized in future years to offset taxable income.

Note 11. Commitments and Contingencies

Commitments

Leases

In February 2017, the Company entered into a lease agreement for 21,603 square feet of office space in Danvers, Massachusetts which expires on July 31, 2022. In December 2017, the Company entered into an amendment to this lease to extend the term through August 31, 2025 and to add an additional 6,607 square feet of space in which rent began on June 1, 2018. In March 2018, the Company entered into an amendment to the lease to add an additional 11,269 square feet of space for which rent began on June 1, 2018 through August 31, 2025.  In July 2018, the Company entered into an amendment to lease an additional 23,864 square feet of

18

space from October 1, 2018 through September 30, 2027. With this amendment, the Company will lease 63,343 square feet in total at this location.  The Company also has a right of first offer to purchase the property from January 1, 2018 through August 31, 2035, if the lessor decides to sell the building or receives an offer to purchase the building from a third-party buyer.  The annual rent expense for the lease is estimated to be $0.9 million.

In September 2016, the Company entered into a lease agreement for an office in Berlin, Germany which commenced in May 2017 and expires in May 2024. The annual rent expense for the lease is estimated to be $0.3 million.

In October 2016, the Company entered into a lease agreement for an office in Tokyo, Japan which expires in September 2021. The office houses administrative, regulatory, and training personnel in connection with the Company’s commercial launch in Japan. The annual rent expense for the lease is estimated to be $0.9 million.

Contingencies

From time to time, the Company is involved in legal and administrative proceedings and claims of various types. In some actions, the claimants seek damages, as well as other relief, which, if granted, would require significant expenditures. The Company records a liability in its consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. The Company reviews these estimates each accounting period as additional information is known and adjusts the loss provision when appropriate. If a matter is both probable to result in liability and the amount of loss can be reasonably estimated, the Company estimates and discloses the possible loss or range of loss. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in its consolidated financial statements.

Thoratec Matters

Thoratec Corporation, or Thoratec, a subsidiary of Abbott Laboratories, has challenged a number of Company owned patents in Europe in connection with the launch of their HeartMate PHP medical device, or PHP, in Europe. These actions relate to Thoratec’s ability to manufacture and sell their PHP product in Europe. These actions do not relate to the Company’s ability to manufacture or sell its Impella line of devices.

In December 2014, Thoratec filed a nullity suit in the German Federal Patent Court against a German “pigtail” patent owned by the Company with a flexible extension feature, and auxiliary pigtail, basket and funnel features. The validity hearing was held in November 2016 and the Federal Patent Court found the patent invalid. The Company is appealing this decision.

In August 2015, Thoratec filed a nullity action in the German Federal Patent Court against two Company owned patents covering a “magnetic clutch” feature. These magnetic clutch patents were acquired by the Company in July 2014, in connection with its acquisition of ECP and AIS. The validity hearing for the magnetic clutch patents was held in June 2017. The Company’s patents were upheld in an amended form to focus on the structure and interaction of the magnets in the clutch. The Federal Patent Court found certain unamended claims to be invalid.  The Company is appealing the decision with respect to the unamended claims.

In September 2015, the Company filed counterclaims in the magnetic clutch action in Germany asserting that the PHP product infringes the two magnetic clutch patents, a European pigtail patent, and the German pigtail patent. The infringement trial has been stayed, pending resolution of the German nullity actions.  

In February 2017, Thoratec filed an opposition in the European Patent Office, (“EPO”), against a Company owned patent acquired in connection with the acquisition of ECP and AIS relating to a housing structure for an expandable pump. The Company filed an initial response to the opposition in July 2017. Oral proceedings are scheduled for October 26, 2018.  In December 2017, Thoratec filed an opposition in the EPO against a Company owned patent acquired in connection with the acquisition of ECP and AIS relating to a pump having a shaft cap with an atraumatic ball. The Company responded to the opposition on May 27, 2018 and is awaiting a preliminary opinion from the EPO Opposition Division.  

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Maquet Matters

In December 2015, the Company received a letter from Maquet Cardiovascular LLC, or Maquet, a subsidiary of the Getinge Group, asserting that the Company’s Impella devices infringe certain claims having guidewire, lumen and sensor features, which were in two Maquet patents and one pending patent application in the U.S. and elsewhere, and attached a draft litigation complaint and encouraged the Company to take a license from Maquet.  In January 2016, the Company responded to Maquet stating that it believed that the cited claims were invalid and that its Impella devices did not infringe the cited patents.  In May 2016, Maquet notified the Company that its pending U.S. patent application had been issued as a U.S. patent, repeated their earlier assertion and encouraged the Company to discuss taking a license from Maquet. The three patents expire September 2020, December 2020 and October 2021. In May 2016, the Company filed suit in U.S. District Court for the District of Massachusetts, (“D. Mass.”), against Maquet seeking a declaratory judgment that the Company’s Impella devices do not infringe Maquet’s cited patent rights.  

In August 2016, Maquet sent a letter to the Company identifying four new U.S. continuation patent filings with claims that Maquet alleges are infringed by the Company’s Impella devices. Of the four U.S. continuation applications, one issued as a patent on January 17, 2017, one issued as a patent on February 7, 2017, one issued as a patent on March 21, 2017, and one issued as a patent on October 17, 2017.  These four issued patents will expire in September 2020.

In September 2016, Maquet filed a response to the Company’s suit in D. Mass., including various counterclaims alleging that the Company’s Impella 2.5, Impella CP, Impella 5.0, and Impella RP heart pumps infringe certain claims of the three original issued U.S. patents (“2016 action”). On June 15, 2017, Maquet filed a motion for leave to amend its infringement counterclaims to add the first three additional U.S. continuation patents mentioned above and to file various false advertising, unfair competition claims under state law and under the Lanham Act, and a trademark cancellation in the pending case.  Maquet’s amended complaint and counterclaim, like those it originally filed, seek injunctive relief and monetary damages in the form of a reasonable royalty, with three times the amount for alleged willful infringement. The amended complaint admits that Maquet’s current commercially available products do not embody the claims of the asserted patents. On July 21, 2017, the Court granted the motion in part, allowing the three additional continuation patents to be added to the case, but denying addition of the false advertising claims, Lanham Act claims, and the trademark cancellation claims.  On April 24 and 25, 2018, the Court conducted a Markman hearing on claim interpretation. The parties are awaiting the judge’s claim construction order.  Discovery is ongoing. With regard to the first six Maquet patents mentioned above, in March and April 2017, the Company filed requests for inter partes review, (“IPR”), at the U.S. Patent & Trademark Office’s Patent Trial and Appeals Board, (“PTAB’), asserting that the claims are invalid in view of prior art blood pump technology. In September and October 2017, the PTAB denied institution on these IPR requests filed by the Company.  In September 2017, the Company filed additional IPRs and in March and April 2018, the PTAB denied institution of these IPR petitions.

On November 22, 2017, Maquet filed a second lawsuit in D. Mass alleging that the Company’s Impella 2.5, Impella CP, and Impella 5.0 heart pumps infringe certain claims of the fourth additional U.S. continuation patent mentioned above (the seventh patent overall).   In the complaint, Maquet seeks injunctive relief and monetary damages in the form of a reasonable royalty, with three times the amount for alleged willful infringement.  In its answer to Abiomed’s counterclaim, Maquet admits that its current commercially available products do not embody the claims of the asserted patents.  This second action is in its early stages.    

The Company is unable to estimate the potential liability with respect to the legal matters noted above. There are numerous factors that make it difficult to meaningfully estimate possible loss or range of loss at this stage of the legal proceedings, including the significant number of legal and factual issues still to be resolved in the Marquet and Thoratec patent disputes.

Note 12. Segment and Enterprise Wide Disclosures

The Company operates in one business segment—the research, development and sale of medical devices to assist or replace the pumping function of the failing heart. The Company’s chief operating decision maker (determined to be the Chief Executive Officer) does not manage any part of the Company separately, and the allocation of resources and assessment of performance are based on the Company’s consolidated operating results. International sales (sales outside the U.S., primarily in Europe) accounted for 12% and 10% of total revenue for the three months ended June 30, 2018 and 2017, respectively. The Company’s long-lived assets are located in the U.S. except for $36.5 million and $35.5 million at June 30, 2018 and March 31, 2018, respectively, which are located primarily in Germany.

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ITEM 2: MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward Looking Statements

This Report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act of 1934, as amended. Any statements other than one conveying solely historical facts is a forward-looking statement. These forward-looking statements may be accompanied by words such as “anticipate,” “believe,” “estimate,” “expect,” “forecast,” “intend,” “may,” “plan,” “potential,” “project,” “target,” “will” and other words and terms of similar meaning. These forward-looking statements address various matters including, among others, future actions related to ongoing investigations and litigation and expenditures related thereto; the development and commercialization of new and existing products and anticipated costs, including research and development, sales and marketing and training costs associated with product development and commercialization; the anticipated launch dates of technological improvements in existing products and studies in pipeline products; expected capital expenditures for the fiscal year ending March 31, 2019; commercial plans for our products into new markets such as Japan; expected enrollment in our prospective feasibility study; demand and expected shipments of our products; anticipated shifts in the revenue mix associated with our products; our ability to increase revenue from our Impella® line of products and the sufficiency of revenue to fund future operations; the impact of market factors such as changes in interest rates, currency exchange rates on our securities and the fair value of our financial instruments; awards of performance and market-based restricted stock units; and the impact of ASU 2016-02 on our consolidated financial statements and disclosures. Each forward-looking statement in this Report is subject to risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statement, including, among others: our inability to predict the outcome of investigations and litigation and associated expenses; possible delays in our research and development programs; our ability to obtain regulatory approvals and market our products, and uncertainties related to regulatory processes; greater government scrutiny and regulation of the medical device industry and our ability to respond to changing laws and regulations affecting our industry, including any reforms to the regulatory approval process administered by the U.S Food and Drug Administration, or FDA, and changing enforcement practices related thereto; the inability to manufacture products in commercial quantities at an acceptable cost; the acceptance by physicians and hospitals of our products; the impact of competitive products and pricing; uncertainties associated with future capital needs and the risks identified under Item 1A of Part I of our Annual Report on Form 10-K, for the year ended March 31, 2018, as well as the other information we file with the Securities and Exchange Commission. Readers are cautioned not to place considerable reliance on any forward-looking statements contained in this Report, which speak only as of the date of this Report. We undertake no obligation to update or revise these forward-looking statements whether as a result of new information, future events or otherwise, unless required by law. Our business is subject to substantial risks and uncertainties, including those referenced above. Investors, potential investors, and others should give careful consideration to these risks and uncertainties.

Overview

We are a leading provider of temporary mechanical circulatory support devices, and we offer a continuum of care to heart failure patients. We develop, manufacture and market proprietary products that are designed to enable the heart to rest, heal and recover by improving blood flow to the coronary arteries and end-organs and/or temporarily assisting the pumping function of the heart. Our products are used in the cardiac catheterization lab, or cath lab, by interventional cardiologists, the electrophysiology lab, the hybrid lab and in the heart surgery suite by cardiac surgeons. A physician may use our devices for patients who are in need of hemodynamic support prophylactically, urgently or emergently before, during or after angioplasty or heart surgery procedures. We believe that heart recovery is the optimal clinical outcome for a patient experiencing heart failure because it enhances the potential for the patient to go home with their own heart, facilitating the restoration of quality of life. In addition, we believe that, for the care of such patients, heart recovery is often the most cost-effective solution for the healthcare system.

Our strategic focus and the driver of our revenue growth is the market penetration of our family of Impella® heart pumps. The Impella device portfolio, which includes the Impella 2.5®, Impella CP®, Impella RP®, Impella LD® and Impella 5.0® devices, has supported numerous patients worldwide. All of our product and service revenue in the near future will be from our Impella devices.

In March 2015, we received FDA approval of a PMA for use of the Impella 2.5 device during elective and urgent high-risk percutaneous coronary intervention, or PCI, procedures. In December 2016, the FDA expanded this PMA approval in the U.S. to include the Impella CP device. With these approved indications, the Impella 2.5 and Impella CP devices provide the only minimally invasive treatment options indicated for use during high-risk PCI procedures in the U.S. In April 2016, the FDA approved a PMA supplement for our Impella 2.5, Impella CP, Impella 5.0 and Impella LD devices to provide treatment for ongoing cardiogenic shock that occurs following a heart attack or open heart surgery. The intent of our Impella system therapy is to reduce ventricular work and to provide the circulatory support necessary to allow heart recovery and early assessment of residual myocardial function.

In September 2017, we received FDA approval of a PMA for the Impella RP heart pump. The Impella RP heart pump is indicated for providing temporary right ventricular support for up to 14 days in patients with a body surface area ≥1.5 m², who develop acute right heart failure or decompensation following left ventricular assist device implantation, myocardial infarction, heart

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transplant, or open-heart surgery. With this approval, the Impella RP heart pump is the only percutaneous temporary ventricular support device that is FDA-approved as safe and effective for right heart failure as stated in the indication.

In February 2018, we received two expanded PMA approvals from the FDA for our Impella heart pumps. The first expanded approval is for use of Impella 2.5, CP, 5.0 and LD heart pumps on patients with cardiogenic shock associated with cardiomyopathy, including peripartum and postpartum cardiomyopathy.  The second expanded PMA approval is for use of the Impella 2.5 and Impella CP heart pumps during elective and high-risk PCI procedures.  This expanded PMA approval confirms Impella support as appropriate in patients with severe coronary artery disease, complex anatomy and extensive comorbidities, with or without depressed ejection fraction.  

In April 2018, we received FDA approval for Impella CP SMARTASSIST^TM and Optical Sensor which is intended to provide enhanced monitoring capability, reduce setup time and improve ease of use for physicians.  The optical sensor technology is also approved under CE Mark in the European Union.

In September 2016, we received Pharmaceuticals and Medical Devices Agency, or PMDA, approval from the Japanese Ministry of Health, Labour & Welfare, or MHLW, for our Impella 2.5 and Impella 5.0 heart pumps to provide treatment of drug-resistant acute heart failure in Japan. In July 2017, we received approval from the MHLW for reimbursement for the Impella 2.5 and 5.0 heart pumps. Reimbursement in Japan for the Impella 2.5 and 5.0 is equivalent to our average Impella sales price in the U.S. We commenced commercialization in Japan during the second quarter of fiscal 2018 and have begun a slow commercial launch of Impella in Japan.

Our Impella 2.5, Impella 5.0, Impella LD, Impella CP and Impella RP devices also have CE Mark approval and Health Canada approval, which allows us to market these devices in the European Union and Canada.

In May 2017, we announced the enrollment of the first patient in the FDA approved prospective multi-center feasibility study, STEMI Door to Unloading with Impella CP system in acute myocardial infarction. The trial focuses on the feasibility and safety of unloading the left ventricle using the Impella CP heart pump prior to primary PCI in patients presenting with ST segment elevation myocardial infarction, or STEMI, without cardiogenic shock with the hypothesis that this will potentially reduce infarct size. The study, which received FDA approval in October 2016, will enroll up to 50 patients at 10 sites. We completed enrollment in the study during the quarter ended June 30, 2018 and we are currently reviewing and analyzing the data from the study.

We expect to continue to make additional PMA supplement submissions for our Impella portfolio of devices for additional indications.

Our Existing Products

Impella 2.5®

The Impella 2.5 device is a percutaneous micro heart pump with an integrated motor and sensors. The device is designed primarily for use by interventional cardiologists to support patients in the cath lab who may require assistance to maintain circulation. The Impella 2.5 heart pump can be quickly inserted via the femoral artery to reach the left ventricle of the heart, where it is directly deployed to draw blood out of the ventricle and deliver it to the circulatory system. This function is intended to reduce ventricular work and provide blood flow to vital organs. The Impella 2.5 heart pump is introduced with normal interventional cardiology procedures and can pump up to 2.5 liters of blood per minute.

In March 2015, we received PMA approval from the FDA for the use of the Impella 2.5 device during elective and urgent high-risk PCI procedures. With this PMA approval, the Impella 2.5 device became the first FDA approved hemodynamic support device for use during high-risk PCI procedures. Under this first PMA, the Impella 2.5 is a temporary (up to six hours) ventricular support device indicated for use during high-risk PCI performed in elective or urgent hemodynamically stable patients with severe coronary artery disease and depressed left ventricular ejection fraction, when a heart team, including a cardiac surgeon, has determined high-risk PCI is the appropriate therapeutic option. Use of the Impella 2.5 device in these patients may prevent hemodynamic instability that may occur during planned temporary coronary occlusions and may reduce periprocedural and post-procedural adverse events. The product labeling allows for the clinical decision by physicians to leave the Impella 2.5 device in place beyond the intended duration of up to six hours should unforeseen circumstances arise.

In April 2016, the FDA approved a supplement to our March 2015 PMA for the use of our Impella 2.5, Impella CP, Impella 5.0 and Impella LD devices to provide treatment for ongoing cardiogenic shock. This PMA supplement covers a set of indications related to the use of the Impella devices in patients suffering cardiogenic shock following acute myocardial infarction or cardiac surgery and allows for a longer duration of support.

Pursuant to the April 2016 PMA approval, the Impella 2.5, Impella CP, Impella 5.0 and Impella LD catheters, in conjunction with the Automated Impella Controller, or AIC, were approved as temporary ventricular support devices intended for short term use (≤ 4 days for the Impella 2.5 and Impella CP, and ≤ 6 days for the Impella 5.0 and LD) and indicated for the treatment of ongoing cardiogenic shock that occurs immediately (< 48 hours) following acute myocardial infarction or open heart surgery as a result of

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isolated left ventricular failure that is not responsive to optimal medical management and conventional treatment measures. The intent of the Impella system therapy is to reduce ventricular work and to provide the circulatory support necessary to allow heart recovery and early assessment of residual myocardial function.  Optimal medical management and convention treatment measures include volume loading and use of pressors and inotropes, with or without an intraortic balloon pump, or IABP.

The Impella 2.5 device has CE Mark approval in the European Union for up to five days of use and is approved for use in up to 40 countries. The Impella 2.5 device also has Health Canada approval which allows us to market the device in Canada.

In September 2016, we received PMDA approval from the Japanese MHLW for our Impella 2.5 and Impella 5.0 heart pumps to provide treatment of drug-resistant acute heart failure in Japan. In July 2017, we received approval from the MHLW for reimbursement of the Impella 2.5 and 5.0 heart pumps. Reimbursement in Japan for the Impella 2.5 and 5.0 is equivalent to our average Impella sales price in the U.S. and we commenced commercialization in Japan during the second quarter of fiscal 2018.

In February 2018, we received two expanded PMA approvals from the FDA for our Impella heart pumps. The first expanded PMA approval is for use of Impella 2.5, CP, 5.0 and LD heart pumps on patients with cardiogenic shock associated with cardiomyopathy, including peripartum and postpartum cardiomyopathy.  The second expanded PMA approval was for use of the Impella 2.5 and Impella CP heart pumps during elective and high-risk PCI procedures.  This expanded PMA approval confirms Impella support as appropriate in patients with severe coronary artery disease, complex anatomy and extensive comorbidities, with or without depressed ejection fraction.  

Impella CP®

The Impella CP device provides blood flow of approximately one liter more per minute than the Impella 2.5 device and is primarily used by either interventional cardiologists to support patients in the cath lab or by cardiac surgeons in the heart surgery suite.

In April 2016, the FDA approved the PMA supplement for certain of our devices, including our Impella CP device to provide treatment for ongoing cardiogenic shock.

In February 2018, we received two expanded PMA approvals from the FDA for our Impella heart pumps. The first expanded PMA approval is for use of Impella 2.5, CP, 5.0 and LD heart pumps on patients with cardiogenic shock associated with cardiomyopathy, including peripartum and postpartum cardiomyopathy.  The second expanded PMA approval is for use of the Impella 2.5 and Impella CP heart pumps during elective and high-risk PCI procedures.  This expanded PMA approval confirms Impella support as appropriate in patients with severe coronary artery disease, complex anatomy and extensive comorbidities, with or without depressed ejection fraction.  

These PMA approvals allow the Impella CP to be used as a temporary (≤ 6 hours) ventricular support system indicated for use during high risk PCI procedures performed in elective or urgent hemodynamically stable patients with severe coronary artery disease and depressed left ventricular ejection fraction, when a heart team, including a cardiac surgeon, has determined that high-risk PCI is the appropriate therapeutic option. The product labeling allows for the clinical decision by physicians to leave the Impella CP device in place beyond the intended duration of up to six hours should unforeseen circumstances arise.

The Impella CP device has CE Mark approval in the European Union for up to five days of use and is approved for use in up to 40 countries.

In April 2018, we received FDA approval for Impella CP SMARTASSIST^TM and Optical Sensor which is intended to provide enhanced monitoring capability, reduce setup time and improve ease of use for physicians.  The optical sensor technology is also approved under CE Mark in the European Union.

In May 2017, we announced the enrollment of the first patient in the FDA approved prospective multi-center feasibility study, STEMI Door to Unloading with Impella CP system in acute myocardial infarction. The trial focuses on the feasibility and safety of unloading the left ventricle using the Impella CP heart pump prior to primary PCI in patients presenting with ST segment elevation myocardial infarction, or STEMI, without cardiogenic shock with the hypothesis that this will potentially reduce infarct size. The study, which received FDA investigational device approval to proceed in October 2016, will enroll up to 50 patients at 10 sites. We completed enrollment in the study during the quarter ended June 30, 2018 and we are currently reviewing and analyzing the data from the study.

The primary endpoints of the feasibility study will focus on safety, including major adverse cardiovascular and cerebrovascular events, or MACCE, at 30 days. All patients will undergo cardiac magnetic resonance imaging to assess infarct size as a percent of left ventricular mass at 30 days post-PCI. Patients will be randomized to Impella CP placement with immediate primary PCI, or to Impella CP placement with 30 minutes of unloading prior to primary PCI. The hypothesis of this novel approach to treating STEMI patients, based on extensive mechanistic research, is that unloading the left ventricle prior to PCI reduces myocardial work load, oxygen demand and also initiates a cardio-protective effect at the myocardial cell level, which may alleviate myocardial damage caused by reperfusion injury at the time of revascularization. This feasibility study will help refine the protocol and lay the groundwork for a future pivotal study with more sites and patients and will be designed for statistical significance.

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Impella 5.0® and Impella LD®

The Impella 5.0 and Impella LD devices are percutaneous micro heart pumps with integrated motors and sensors for use primarily in the heart surgery suite. These devices are designed to support patients who require higher levels of circulatory support as compared to the Impella 2.5.

The Impella 5.0 device can be inserted into the left ventricle via femoral cut down or through the axillary artery. The Impella 5.0 device is passed into the ascending aorta, across the valve and into the left ventricle. The Impella LD device is similar to the Impella 5.0 device, but it is implanted directly into the ascending aorta through an aortic graft.  Both of these procedures are normally performed by cardiac surgeons in the surgery suite. The Impella 5.0 and Impella LD devices can pump up to five liters of blood per minute, potentially providing full circulatory support.

In April 2016, the FDA approved the PMA supplement for certain of our devices, including the Impella 5.0 and Impella LD devices to provide treatment for ongoing cardiogenic shock following a heart attack or open heart surgery. In February 2018, we received an expanded FDA PMA approval for use of Impella 2.5, Impella CP, Impella 5.0, and Impella LD heart pumps to provide treatment for heart failure associated with cardiomyopathy leading to cardiogenic shock.  This approval expands the previous indication for acute myocardial infarction, or AMI, cardiogenic shock and post-cardiotomy shock, or PCCS, received in April 2016.  

The Impella 5.0 and Impella LD devices have CE Mark approval in the European Union for up to ten days’ duration and are approved for use in over 40 countries.

In July 2017, we received approval from the Japanese MHLW for reimbursement for the Impella 2.5 and 5.0 heart pumps. Reimbursement in Japan of the Impella 2.5 and 5.0 is equivalent to our average Impella sales price in the U.S. and we commenced commercialization in Japan during the second quarter of fiscal 2018.

Impella RP®

The Impella RP is a percutaneous catheter-based axial flow pump that is designed to allow greater than four liters of blood flow per minute and is intended to provide the flow and pressure needed to compensate for right side heart failure. The Impella RP is the first percutaneous single access heart pump designed for right heart support to receive FDA approval. The Impella RP device is approved to provide support of the right heart during times of acute failure for certain patients who have received a left ventricle assist device or have suffered heart failure due to AMI, a failed heart transplant, or following open heart surgery.

In September 2017, we received FDA approval of a PMA for the Impella RP heart pump. This latest approval follows the prior FDA HDE received in January 2015 and adds the Impella RP heart pump to our platform of PMA approved devices. The Impella RP heart pump is indicated for providing temporary right ventricular support for up to 14 days in patients with a body surface area ≥1.5 m² who develop acute right heart failure or decompensation following left ventricular assist device implantation, myocardial infarction, heart transplant, or open-heart surgery. With this approval, the Impella RP heart pump is the only percutaneous temporary ventricular support device that is FDA-approved as safe and effective for right heart failure as stated in the indication.

The Impella RP device has CE Mark approval for commercial sale in the European Union.

Our Product Pipeline

Impella 5.5™

The Impella 5.5 device is designed to be a percutaneous micro heart pump with integrated motors and sensors. The Impella 5.5 device is designed to be smaller, provide months of hemodynamic support and is expected to allow for greater than five liters of blood flow per minute.

In April 2018, we announced that we received CE mark approval in the European Union for the Impella 5.5 heart pump and the first patient was treated at University Heart Center in Hamburg, Germany. The Impella 5.5 pump has not been approved for commercial use or sale in the U.S.

Impella ECP™

The Impella ECP pump is designed for blood flow of greater than three liters per minute. It is intended to be delivered on a standard sized catheter and will include an expandable inflow in the left ventricle. We anticipate conducting a first-in-human trial outside of the U.S. in fiscal 2019. The Impella ECP pump is still in development and has not been approved for commercial use or sale.

In July 2014, we acquired all of the issued shares of ECP Entwicklungsgesellschaft mbH, or ECP, a German limited liability company based in Berlin, Germany, for $13.0 million in cash, with additional potential payments up to a maximum of $15.0 million based on the achievement of certain technical, regulatory and commercial milestones. In connection with our acquisition of ECP, ECP

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acquired all of the issued shares of AIS GmbH Aachen Innovative Solutions, or AIS, a German limited liability company, for $2.8 million in cash which was provided by us. AIS, based in Aachen, Germany, holds certain intellectual property useful to ECP’s business, and, prior to being acquired by ECP, had licensed such intellectual property to ECP.

Impella BTR™

The Impella BTR device is designed to be a percutaneous micro heart pump with integrated motors and sensors. The Impella BTR device is designed to be smaller, provide up to one year of hemodynamic support and is expected to allow for greater than five liters of blood flow per minute.  The Impella BTR device also includes a wearable driver designed for hospital discharge.  The Impella BTR pump is still in development and has not been approved for commercial use or sale. 

Critical Accounting Policies and Estimates

There have been no significant changes in our critical accounting policies during the three months ended June 30, 2018, as compared to the critical accounting policies disclosed in Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the fiscal year ended March 31, 2018.

Recent Accounting Pronouncements

Information regarding recent accounting pronouncements is included in “Note 2. Basis of Preparation and Summary of Significant Accounting Policies” to our condensed consolidated financial statements and is incorporated herein by reference.

Results of Operations

The following table sets forth certain condensed consolidated statements of operations data for the periods indicated as a percentage of total revenue:

	For the Three Months Ended June 30,
	2018				2017
Revenue		100.0		%		100.0		%
Costs and expenses as a percentage of total revenue:
Cost of revenue		17.1				16.5
Research and development		11.8				12.8
Selling, general and administrative		45.1				45.7
Total costs and expenses		74.0				75.0
Income from operations		26.0				25.0
Income tax provision and other		(24.0	)			(3.2	)
Net income as a percentage of total revenue		50.0		%		28.2		%

Three Months Ended June 30, 2018 compared with the Three Months Ended June 30, 2017

Revenue

Our revenues are comprised of the following:

	For the Three Months Ended June 30,
		2018		2017
	(in $000's)
Impella product revenue	$	173,675	$	127,193
Service and other revenue		6,335		5,275
Total revenue	$	180,010	$	132,468

Our revenues are disaggregated by the following geographical locations:

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	For the Three Months Ended June 30,
		2018		2017
	(in $000's)
U.S. revenue	$	157,595	$	119,665
International revenue		22,415		12,803
Total revenue	$	180,010	$	132,468

Impella product revenue encompasses Impella 2.5, Impella CP, Impella 5.0, Impella LD, Impella RP and Impella AIC product sales. Service and other revenue represents revenue earned on service maintenance contracts and preventative maintenance calls.

Total revenue for the three months ended June 30, 2018 increased by $47.5 million, or 36%, to $180.0 million from $132.5 million for the three months ended June 30, 2017. The increase in total revenue was primarily due to higher Impella product revenue from increased utilization in the U.S and Europe and the commercial launch of Impella 2.5 and 5.0 in Japan.

Impella product revenue for the three months ended June 30, 2018 increased by $46.5 million, or 37%, to $173.7 million from $127.2 million for the three months ended June 30, 2017. Most of the increase in Impella product revenue was from increased device sales in the U.S., as we focus on increasing utilization of our disposable catheter products through continued investment in our field organization and physician training programs. Impella product revenue outside of the U.S. also increased primarily due to increased utilization in Germany. We expect revenue from our Impella devices to continue to increase with our recent PMA approvals in the U.S. and our continued controlled launch of Impella devices outside of the U.S., with a primary focus on Germany and Japan.

Service and other revenue for the three months ended June 30, 2018 increased by $1.0 million, or 19%, to $6.3 million from $5.3 million for the three months ended June 30, 2017. The increase in service revenue was primarily due to an increase in preventative maintenance service contracts. We have expanded the number of Impella AIC consoles at many of our existing higher volume customer sites and continue to sell additional consoles to new customer sites. We expect revenue growth for service revenue to be slower than our Impella product revenue growth in the near future as most of these using sites in the U.S. have service contracts that normally have three year terms.

Costs and Expenses

Cost of Revenue

Cost of revenue for the three months ended June 30, 2018 increased by $9.0 million, or 41%, to $30.9 million from $21.9 million for the three months ended June 30, 2017. Gross margin was 82.9% for the three months ended June 30, 2018 and 83.5% for the three months ended June 30, 2017.

The increase in cost of product revenue was related to higher demand for our Impella devices and higher production volume and costs to support growing demand for our Impella devices. The decrease in gross margin for the three months ended June 30, 2018 was primarily due to increased investment in direct labor and overhead as we expand our manufacturing capacity in both our manufacturing facilities in the U.S. and Germany.

Research and Development Expenses

Research and development expenses for the three months ended June 30, 2018 increased by $4.4 million, or 26%, to $21.3 million from $16.9 million for three months ended June 30, 2017. The increase in research and development expenses was primarily due to product development initiatives relating to our existing products, such as optical sensor technology, on the development of Impella 5.5^TM and Impella ECP^TM devices, the expansion of our engineering organization, increased clinical spending primarily related to our cVAD registry and STEMI trial and our continued focus on quality initiatives for our Impella devices.

We expect research and development expenses to increase for the remainder of fiscal 2019 as we continue to increase clinical spending related to our cVAD Registry, STEMI trial and other clinical trials as we expect to incur additional costs as we continue to focus on engineering initiatives to improve our existing products and develop new technologies.

Selling, General and Administrative Expenses

Selling, general and administrative expenses for the three months ended June 30, 2018 increased by $20.5 million, or 34%, to $81.1 million from $60.6 million for the three months ended June 30, 2017. The increase in selling, general and administrative expenses was primarily due to the hiring of additional field sales and clinical personnel in the U.S. and Germany, the continuing commercial launch in Japan, increased spending on marketing initiatives as we continue to educate U.S. physicians on the benefits to patients of hemodynamic support with our Impella products following administration of PMAs, stock-based compensation expense, higher payroll taxes associated with stock option exercises and restricted stock unit vestings and legal expenses related to ongoing

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patent litigation and other legal matters discussed in “Note 11. Commitments and Contingencies—Litigation” to our consolidated financial statements.

We expect to continue to increase our expenditures on sales and marketing activities, with particular investments in field sales and clinical personnel with cath lab expertise to drive recovery awareness for acute heart failure patients. We also plan to increase our marketing, service and training investments as a result of recent PMA approvals in the U.S. for our Impella devices and as we continue our expansion in Japan and other new markets outside of the U.S. We expect to have higher stock-based compensation expense due to the grant of recent equity awards at a higher stock price. We also expect to continue to incur significant legal expenses for the foreseeable future related to ongoing patent litigation and other legal matters discussed in “Note 11. Commitment and Contingencies – Litigation,” to our consolidated financial statements.  

Income Tax Provision

Our income tax benefit was $41.6 million and $3.6 million for the three months ended June 30, 2018 and 2017, respectively. Our effective tax rate was (85.8)% and (10.6)% for the three months ended June 30, 2018 and 2017, respectively. The decrease in the effective income tax rate was due to excess tax benefits recognized associated with stock-based awards of $53.8 million and $16.8 million as an income tax benefit for three and nine months ended June 30, 2018 and 2017, respectively. These recognized excess tax benefits resulted from restricted stock units that vested or stock options that were exercised during the three months ended June 30, 2018 and 2017, respectively. In addition, effective January 1, 2018, the Tax Reform Act, among other changes, reduced the U.S. federal statutory corporate income tax rate from 35% to 21%.

Net Income

For the three months ended June 30, 2018, net income was $90.1 million, or $2.02 per basic share and $1.95 per diluted share, compared to $37.4 million, or $0.85 per basic share and $0.82 per diluted share for three months ended June 30, 2017. As discussed above, our net income included excess tax benefits of $1.21 per basic share and $1.17 per diluted share for the three months ended June 30, 2018 and $0.38 per basic share and $0.37 per diluted share for the three months ended June 30, 2017.

Our net income for fiscal 2019 was also driven by higher Impella product revenue due to greater utilization of our Impella devices in the U.S. and Germany.

Liquidity and Capital Resources

At June 30, 2018, our total cash, cash equivalents and marketable securities totaled $367.4 million, a decrease of $32.4 million compared to $399.8 million at March 31, 2018. The decrease in our cash, cash equivalents and marketable securities during the three months ended June 30, 2018 was primarily due to taxes paid related to net settlement of vesting of stock awards during the period.

Following is a summary of our cash flow activities:

	For the Three Months Ended June 30,
	2018			2017
Net cash provided by operating activities	$	46,631		$	36,294
Net cash provided by (used for) investing activities		34,767			(17,208	)
Net cash used for financing activities		(61,800	)		(14,434	)
Effect of exchange rate changes on cash		(1,285	)		278
Net increase in cash and cash equivalents	$	18,313		$	4,930

Cash Provided by Operating Activities

For the three months ended June 30, 2018, cash provided by operating activities consisted of net income of $90.1 million, adjustments for non-cash items of $28.7 million and cash used in working capital of $14.7 million. The increase in net income was primarily due to higher revenue from increased utilization of our Impella devices. Adjustments for non-cash items consisted primarily of $12.2 million of stock-based compensation expense, a $44.5 million change in deferred tax provision, $3.0 million of depreciation expense on property and equipment, $0.9 million in inventory and other write-downs, and $0.4 million in accretion on marketable securities. The change in cash from working capital included a $1.9 million decrease in accounts receivable due to increased collections, an $7.8 million increase in inventory to support growing demand for our Impella devices, a $3.9 million decrease in accounts payable and accrued expenses primarily due to payment of annual bonuses during the quarter ended June 30, 2018, and a $2.9 million decrease in deferred revenue.

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For the three months ended June 30, 2017, cash provided by operating activities consisted of net income of $37.4 million, adjustments for non-cash items of $8.0 million and cash used in working capital of $9.1 million. The increase in net income was primarily due to higher revenue from increased utilization of our Impella devices. Adjustments for non-cash items consisted primarily of $8.7 million of stock-based compensation expense, a $3.8 million change in deferred tax provision, a $2.5 million of depreciation expense on property and equipment and $0.5 million in inventory write-downs. The change in cash from working capital included a $0.8 million decrease in accounts receivable due to increased collections, a $1.3 million increase in inventory to support growing demand for our Impella devices, and a $6.8 million decrease in accounts payable and accrued expenses due to payment of annual bonuses during the quarter ended June 30, 2017.

Cash Provided by Investing Activities

For the three months ended June 30, 2018, net cash provided by investing activities primarily consisted of $51.1 million in maturities (net of purchases) of marketable securities and $15.1 million for the purchase of property and equipment primarily related to continued expansion of manufacturing capacity, office space and research development facilities in Danvers and Aachen, Germany.  We also made an additional $1.2 million investment in a private medical technology company during fiscal 2019.

For the three months ended June 30, 2017, net cash used for investing activities primarily consisted of $7.0 million in purchases (net of maturities) of marketable securities and $9.8 million for the purchase of property and equipment mostly related to expansion of manufacturing capacity and office space in Danvers, Massachusetts and Aachen, Germany.  

Capital expenditures for fiscal 2019 are estimated to range from $35 million to $45 million, including additional capital expenditures for manufacturing capacity expansions in our Danvers, Massachusetts and Aachen, Germany facilities, additional office space, building and leasehold improvements and information systems development projects.  

Cash Used for Financing Activities

For the three months ended June 30, 2018, net cash used for financing activities included $67.6 million in payments in lieu of issuance of common stock for payroll withholding taxes upon vesting of certain equity awards. This amount was offset by $5.8 million in proceeds from the exercise of stock options.  

For the three months ended June 30, 2017, net cash used for financing activities included $17.8 million in payments in lieu of issuance of common stock for payroll withholding taxes upon vesting of certain equity awards and $0.2 million in principal payments on capital lease obligation. These amounts were offset by $3.6 million in proceeds from the exercise of stock options.  

Operating Capital and Liquidity Requirements

We believe that our revenue from product sales together with existing resources will be sufficient to fund our operations for at least the next twelve months, exclusive of activities involving any future acquisitions of products or companies that complement or augment our existing line of products.

Our primary liquidity requirements are to fund the expansion of our commercial and operational infrastructure, increase our manufacturing capacity, increase our inventory levels in order to meet growing customer demand for our Impella devices, fund new product development initiatives, continue our commercial launch in Japan and expand to potential new markets, increase clinical spending, legal expenses related to ongoing patent litigation, payments in lieu of issuance of common stock for payroll withholding taxes upon vesting of certain equity awards and to provide for general working capital needs. To date, we have primarily funded our operations through product sales and the sale of equity securities.

Our liquidity is influenced by our ability to sell our products in a competitive industry and our customers’ ability to pay for our products. Factors that may affect liquidity include our ability to penetrate the market for our products, maintain or reduce the length of the selling cycle for our products, capital expenditures, investments in collaborative arrangements with other partners, and our ability to collect cash from customers after our products are sold. We also expect to continue to incur legal expenses for the foreseeable future related to ongoing patent litigation and other legal matters. We continue to review our short-term and long-term cash needs on a regular basis. At June 30, 2018 we had no long-term debt outstanding.

Marketable securities at June 30, 2018 and March 31, 2018 consisted of $306.1 million and $356.8 million held in investment funds that invest in U.S. Treasury, government-backed, corporate debt securities, and commercial paper, respectively. We are not a party to any interest rate swaps, currency hedges or derivative contracts of any type and have no exposure to auction rate securities markets.

Cash and cash equivalents held by our foreign subsidiaries totaled $17.3 million and $13.3 million at June 30, 2018 and March 31, 2018, respectively. Our operating income outside the U.S. is deemed to be permanently reinvested in foreign jurisdictions. Since

28

most of our cash and cash equivalents held by foreign subsidiaries which are disregarded entities for domestic tax purposes, any repatriation of foreign subsidiary earnings to the U.S. would likely have a nominal tax impact.

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ITEM 3: QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

Primary Market Risk Exposures

Our cash, cash equivalents and marketable securities are subject to interest rate risk and will fall in value if market interest rates increase. If market interest rates were to increase immediately and uniformly by 10% from levels at June 30, 2018, we believe the decline in fair market value of our investment portfolio would be immaterial.

Currency Exchange Rates

We have foreign currency exposure to exchange rate fluctuations and particularly with respect to the Euro, British pound sterling, Japanese yen, and Singapore dollar. Therefore, our investment in our subsidiaries is sensitive to fluctuations in currency exchange rates. The effect of a change in currency exchange rates on our net investment in international subsidiaries is reflected in the accumulated other comprehensive (loss) income component of stockholders’ equity. If rates of exchange for the Euro, British pound, Japanese yen, and Singapore dollar were to have depreciated immediately and uniformly by 10% relative to the U.S. dollar from levels at June 30, 2018, the result would have been a reduction of stockholders’ equity of approximately $10.8 million.

Fair Value of Financial Instruments

At June 30, 2018, our financial instruments consist primarily of cash and cash equivalents, marketable securities, accounts receivable, accounts payable and contingent consideration. The carrying amounts of accounts receivable and accounts payable are considered reasonable estimates of their fair value, due to the short maturity of these instruments. The estimated fair values of the financial instruments have been determined by us using available market information and appropriate valuation techniques. Considerable judgment is required, however, to interpret market data to develop the estimates of fair value. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our principal executive officer and principal financial officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended, or the Exchange Act), as of June 30, 2018. Based on this evaluation, our principal executive officer and principal financial officer concluded that, as of June 30, 2018, these disclosure controls and procedures are effective to provide reasonable assurance that material information required to be disclosed by us, including our consolidated subsidiaries, in reports that we file or submit under the Exchange Act, is recorded, processed, summarized and reported, within the time periods specified in the Securities and Exchange Commission rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

Evaluation of Changes in Internal Control over Financial Reporting

During the first quarter of our fiscal year ending March 31, 2019, there were no changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II — OTHER INFORMATION

Item 1. Legal Proceedings

We are from time to time involved in various legal actions, the outcomes of which are not within our complete control and may not be known for prolonged periods of time. In some actions, the claimants seek damages, as well as other relief, which, if granted, would require significant expenditures and could impair our business and results of operations. Material legal proceedings are discussed in “Note 11. Commitments and Contingencies—Contingencies” to our condensed consolidated financial statements and such information is incorporated herein by reference.

Item 1A. Risk Factors

Investing in our common stock involves a high degree of risk. In addition to the other information set forth in this Report, you should carefully consider the factors discussed in Part I, “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended March 31, 2018, which could materially affect our business, financial condition or future results. As of the date of this Report there has been no material change in any of the risk factors described in our Annual Report on Form 10-K for the fiscal year ended March 31, 2018.

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

(a) Not applicable.

(b) Not applicable.

(c) Not applicable.

Item 3. Defaults Upon Senior Securities

None

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None

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Item 6. Exhibits

Exhibit No.	Description	Filed with This Form 10-Q	Incorporated by Reference
			Form	Filing Date	Exhibit No.
2.1	Agreement on the Sale and Transfer of all shares in ECP Entwicklungsgellschaft mbH		8-K	July 7, 2014 (File No. 001-09585)	2.1
2.2	Agreement on the Sale and Transfer of all shares in AIS GmbH Aachen Innovation Solutions		8-K	July 7, 2014 (File No. 001-09585)	2.2
3.1	Restated Certificate of Incorporation.		S-3	September 29, 1997	3.1
3.2	Restated By-Laws, as amended.		10-K	May 27, 2004 (File No. 001-09585)	3.2
3.3	Certificate of Designations of Series A Junior Participating Preferred Stock.		S-3	September 29, 1997	3.3
3.4	Amendment to the Company’s Restated Certificate of Incorporation to increase the authorized shares of common stock from 25,000,000 to 100,000,000.		8-K	March 21, 2007 (File No. 001-09585)	3.4
10.1	Lease agreement amendment for additional space in Danvers, Massachusetts dated July 23, 2018	X
10.2	Offer letter with Todd A. Trapp dated March 30, 2018.		10-K	May 24, 2018 (File No. 001-09585)	10.43
10.3	Change of Control Severance Agreement between Abiomed, Inc. and Todd Trapp dated April 6, 2018.		10-K	May 24, 2018 (File No. 001-09585)	10.44
31.1	Principal Financial Officer Certification pursuant to Securities Exchange Act Rule 13a-14(a) and 15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	X
31.2	Principal Financial Officer Certification pursuant to Securities Exchange Act Rule 13a-14(a) and 15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	X
32.1	Principal Executive Officer and Principal Financial Officer Certifications pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.	X

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Exhibit No.	Description	Filed with This Form 10-Q	Incorporated by Reference
			Form	Filing Date	Exhibit No.
101	The following financial information from the ABIOMED, Inc. Quarterly Report on Form 10-Q for the quarter ended June 30, 2018, formatted in Extensible Business Reporting Language (XBRL): (i) Condensed Consolidated Balance Sheets as of June 30, 2018 and March 31, 2018; (ii) Condensed Consolidated Statements of Operations for the three months ended June 30, 2018 and 2017; (iii) Condensed Consolidated Statements of Comprehensive Income for the three months ended June 30, 2018 and 2017; (iv) Condensed Consolidated Statements of Cash Flows for the three months ended June 30, 2018 and 2017; and (v) Notes to Condensed Consolidated Financial Statements.	X

33

ABIOMED, INC. AND SUBSIDIARIES

PART II. OTHER INFORMATION

SIGNATURES

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

	ABIOMED, Inc.
Date: August 2, 2018	/s/    TODD A. TRAPP
	Todd A. Trapp
	Vice President and Chief Financial Officer
	(Principal Financial and Accounting Officer)

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EX-10.1

Exhibit 10.1

FOURTH AMENDMENT TO LEASE

THIS FOURTH AMENDMENT TO LEASE (this “Fourth Amendment”), dated as of July 23    , 2018 (the “Effective Date”), is made and entered into by and between CHERRY HILL DRIVE OWNER, LLC, a Delaware limited liability company (“Landlord”) and ABIOMED, INC., a Delaware corporation (“Tenant”).

R E C I T A L S

A.Landlord and Tenant are parties to that certain Lease dated as of February 2, 2017 “Original Lease”) for that portion of the office building located at 24-42 Cherry Hill Drive, Danvers, Massachusetts (the “Building”) consisting of 21,603 rentable square feet as more particularly described in the Lease (the “Original Premises”).

B.Landlord and Tenant entered into that certain First Amendment to Lease dated as of December 14, 2017 (the “First Amendment”) wherein, among other things, (i) the Term of the Lease was extended to expire on August 31, 2025 (the “Existing Premises Expiration Date”), and (ii) the Original Premises was expanded by the Expansion Premises (as described in the First Amendment) consisting of approximately 6,607 rentable square feet (the “First Amendment Expansion Premises”).  

C.Landlord and Tenant entered into that certain Second Amendment to Lease dated as of March 2, 2018 (the “Second Amendment”) wherein, among other things, the Premises was expanded by the Second Amendment Expansion Premises (as described in the Second Amendment) consisting of approximately 11,269 rentable square feet (the “Second Amendment Expansion Premises”; the Original Premises, the First Amendment Expansion Premises and the Second Amendment Expansion Premises, together, the “Existing Premises”).

D.Landlord and Tenant entered into that certain Third Amendment to Lease dated as of March 30, 2018 (the “Third Amendment”) wherein, among other things, the Landlord’s obligations and certain dates set forth in the Second Amendment were amended and modified.

E.Tenant wishes to further expand the Premises to include the addition of the space consisting of approximately 23,864 rentable square feet in the Building (defined in the First Amendment as the Subordinate Right of First Offer Space) and identified on the plan attached hereto as Exhibit A (the “Fourth AmendmentExpansion Premises”) for a term (solely with respect to the Fourth Amendment Expansion Premises) commencing on October 1, 2018 (the “Fourth Amendment Commencement Date” and ending on August 31, 2027 (the “Fourth Amendment Expansion Premises Expiration Date”).

F.Landlord and Tenant wish to acknowledge and agree that (i) the Term of Lease

1

solely with respect to the Existing Premises has previously commenced and shall expire on the Existing Premises Expiration Date (the “Existing Premises Term”), and (ii) the Term of Lease solely with respect to the Fourth Amendment Expansion shall commence on the Fourth Amendment Commencement Date and shall expire on the Fourth Amendment Expansion Premises Expiration Date (the “Fourth Amendment Expansion Premises Term”).

G.Landlord and Tenant wish to make certain amendments and modifications to the terms and provisions of the Lease consistent with the foregoing as hereinafter set forth.  The Lease, as modified by the First Amendment, the Second Amendment, the Third Amendment, and this Fourth Amendment, is hereinafter referred to as the “Lease.” Capitalized terms not otherwise defined herein shall have the meanings given to such terms in the Lease.

AGREEMENT:

NOW, THEREFORE, in consideration of the premises, the sum of Ten Dollars and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged and confessed, Landlord and Tenant hereby agree as follows:

1.Premises; Tenant’s Percentage.  Effective as of Fourth Amendment Expansion Premises Commencement Date:  (i) the definition of Premises as set forth in the Lease shall be amended by adding the Fourth Amendment Expansion Premises thereto, and (ii) Tenant’s Percentage shall be increased by 23.72%. Upon the occurrence of the Fourth Amendment Commencement Date, (i) the term “Premises” shall be deemed to mean the Existing Premises and the Fourth Amendment Expansion Premises, (ii) the Premises shall be deemed to consist of 63,343 rentable square feet, consisting of the Original Premises (21,603 rentable square feet), the First Amendment Expansion Premises (6,607 rentable square feet), the Second Amendment Expansion Premises (11,269 rentable square feet), and the Fourth Amendment Expansion Premises (23,864 rentable square feet), and (iv) Tenant’s Percentage shall be deemed to be 62.95%.

2. Term; Extension Options.

(a)Landlord and Tenant hereby acknowledge and agree that the Term of Lease with respect to the Existing Premises and the Fourth Amendment Expansion Premises shall not be co-terminus and the Term of Lease solely with respect to the Existing Premises shall expire on the Existing Premises Expiration Date and the Term of Lease solely with respect to the Fourth Amendment Expansion Premises shall expire on the Fourth Amendment Expansion Premises Expiration Date. For purposes of the Lease, except as otherwise set forth herein, the terms “Term”, “Lease Term” or “Term of Lease” shall mean the Existing Premises Term and the Fourth Amendment Expansion Premises Term.

(b)Landlord and Tenant hereby acknowledge and agree that, notwithstanding any term or condition set forth in the Lease, except as set forth in Section 2(c) below, the Extension Option set forth in Exhibit B of the Original Lease (as amended by Section 1(b) of the First Amendment) shall apply solely to the Existing Premises and the Existing Premises Term and shall

2

not apply to the Fourth Amendment Expansion Premises or the Fourth Amendment Expansion Premises Term.

(c)The Extension Option set forth in Exhibit B of the Original Lease shall remain in full force and effect throughout the Fourth Amendment Expansion Premises Term and apply to the Fourth Amendment Expansion Premises (as well as to the Existing Premises through and including the Existing Premises Expiration Date), provided however, that, solely with respect to the Fourth Amendment Expansion Premises Term and the Fourth Amendment Expansion Premises:

i. The second paragraph of Exhibit B of the Original Lease, as it applies solely to the Fourth Amendment Expansion Premises and the Fourth Amendment Expansion Premises Term, shall be deemed modified in its entirety to read as follows: “EXTENSION OPTIONS  So long as there exists no default beyond any applicable notice and cureperiods, either at the time of exercise or on the first day of the Fourth Amendment Expansion Premises Extension Term (as hereinafter defined) and Tenant has not assigned this Lease nor sublet the Premises in whole or in part, Tenant shall have the option to extend the Fourth Amendment Expansion Premises Term for up to two (2) consecutive periods of four (4) years each (each, a “Fourth Amendment Expansion Premises Extension Term”) upon written notice to Landlord given not less than twelve (12) months and not more than fifteen ( 15) months prior to the expiration of the Fourth Amendment Expansion Premises Term or first Fourth Amendment Expansion Premises Extension Term, as applicable. IfTenant fails to exercise its first option to extend the Fourth Amendment Expansion Premises Term strictly within the time period set forth in this section, then Tenant's first and second option to extend the Fourth Amendment Expansion Premises Term shall both automatically lapse and be of no further force or effect. If Tenant exercises its first option to extend the Fourth Amendment Expansion Premises Term but fails to exercise its second option to extend the Fourth Amendment Expansion Premises Term strictly within the time period set forth in this section, then Tenant's second option to extend the Fourth Amendment Expansion Premises Term shall automatically lapse and be of no further force or effect.  In the event that Tenant exercises the option(s) granted hereunder, the applicable Fourth Amendment Expansion Premises Extension Term shall be upon the same terms and conditions as are in effect under this Lease immediately preceding the commencement of such Fourth Amendment Expansion Premises Extension Term except that the Base Rent due from the Tenant with respect to the Fourth Amendment Expansion Premises shall be increased to Landlord's determination of Base Rent as provided herein, and,  other than the second extension option provided herein, Tenant shall have no further right or option to extend the Fourth Amendment Expansion Premises Term or to any abatements, improvement allowance or other inducements. If Tenant timely exercises its option(s) to extend the Fourth Amendment Expansion Premises Term, then no later than thirty (30) days following receipt of Tenant's notice, Landlord shall notify Tenant in writing

3

of Landlord's determination of the Base Rent for the Fourth Amendment Expansion Premises for such Fourth Amendment Expansion Premises Extension Term ("Landlord's Fourth Amendment Expansion Premises Rental Notice"). If Tenant does not object to Landlord's determination of the Base Rent by written notice to Landlord within twenty (20) days after the date of Landlord's Fourth Amendment Expansion Premises Term, then Tenant shall be deemed to have accepted the Base Rent set forth in Landlord's Fourth Amendment Expansion Premises Rental Notice.”

ii. All references in the third and fourth paragraphs of Exhibit B of the Lease to (1) “the Extension Term” shall be modified to read “the applicable Fourth Amendment Expansion Premises Extension Term”, (2) “Landlord’s Rental Notice” shall be modified to read “Landlord’s Fourth Amendment Expansion Premises Rental Notice,” and (3) the “Premises” shall be modified to read the “Fourth Amendment Expansion Premises.”

3.Base Rent.  Effective as of the Fourth Amendment Commencement Date, in addition to the Base Rent and Additional Rent payable to Tenant with respect to the Existing Premises, Tenant shall pay Base Rent for the Fourth Amendment Expansion Premises in accordance with the terms and conditions of the Lease in the following amounts applicable to the following periods (and Tenant shall pay Additional Rent for the Fourth Amendment Expansion Premises as set forth in the Lease):

Period	Base Rent (per annum) (NNN)	Base Rent (per month) (NNN)	Base Rent (per rentable square foot, per annum) (NNN)
Fourth Amendment Commencement Date – September 30, 2019	$334,096.00	$27,841.33	$14.00
October 1, 2019 – September 30, 2020	$344,834.80	$28,736.23	$14.45
October 1, 2020 – September 30, 2021	$355,812.24	$29,651.02	$14.91
October 1, 2021 – September 30, 2022	$367,266.96	$30,605.58	$15.39
October 1, 2022 – September 30, 2023	$378,960.32	$31,580.03	$15.88
October 1, 2023 – September 30, 2024	$391,130.96	$32,594.25	$16.39
October 1, 2024 – September 30, 2025	$403,540.24	$33,628.35	$16.91

4

October 1, 2025 – September 30, 2026	$416,426.80	$34,702.23	$17.45
October 1, 2026 – August 31, 2027	$429,552.00	$35,796.00	$18.00

Notwithstanding any term or condition of the Lease  to the contrary, Tenant’s obligation to pay Base Rent solely with respect to the Fourth Amendment Expansion Premises shall abate for the period commencing on the Fourth Amendment Commencement Date and ending on March 31, 2019.

4.Condition of the Fourth Amendment Expansion Premises; Landlord’s Work.  

(a)Condition of the Fourth Amendment Expansion Premises. Tenant hereby acknowledges and agrees that, subject to Landlord’s obligation with respect to the Landlord’s Work, it hereby accepts the Fourth Amendment Expansion Premises in such “AS IS, WHERE IS” condition as exists on the date hereof.  Further, Tenant specifically acknowledges and agrees that no provision of the Lease concerning (i) improvements, alterations and/or additions to be performed or provided by Landlord or at Landlord’s expense, (ii) tenant improvement allowances, (iii) reimbursement allowance, or (iv) free rent or other rent concession shall have any application whatsoever to the Fourth Amendment Expansion Premises or this Fourth Amendment, except as specifically set forth in this Fourth Amendment.

(b)Landlord’s Work.  Landlord hereby acknowledges and agrees that prior to the Fourth Amendment Commencement Date, it shall, at its sole cost and expense, (i) fully demise in accordance with all applicable laws and regulations the Fourth Amendment Expansion Premises, including without limitation, all mechanical, electrical, HVAC and plumbing systems, from the 18,974 rentable square foot space immediately adjacent to the Fourth Amendment Expansion Premises presently leased to Leica Biosystems Newcastle Ltd. (or its affiliate), (ii) remove the large refrigerator/freezer presently located in the Fourth Amendment Expansion Premises, (iii)  remove the UPS (uninterruptible power supply) system presently serving the Fourth Amendment Expansion Premises, and (iv) cause the Fourth Amendment Expansion Premises to be in broom clean condition (the “Landlord’s Work”).

5.Utilities; Temporary Mechanical Room; Data/Server Room.  

(a)Utilities.  Landlord and Tenant hereby acknowledge and agree that the entire Premises (including the Existing Premises and the Fourth Amendment Expansion Premises) are served by gas and electric utilities which are separately metered from the remaining portions of the Building by one or more meters.  Landlord represents that all meters for  such gas and electric utilities are currently in the Premises (including the Existing Premises and the Fourth Amendment Expansion Premises)  and serve no other portions of the Building. Accordingly, Tenant shall be responsible for paying the cost of such utilities used by the Premises.  Notwithstanding the foregoing, water service for the Building is not separately metered and,

5

therefore, Tenant shall continue to pay Tenant’s Percentage of the cost of water used by the Building, however, in the event any portion of the Premises is not used for general office purposes, Tenant shall be required, at its sole cost and expense, to install a separate meter or check meter to measure water usage of such non-office portion of the Premises and Tenant shall be responsible for paying the entire cost of water used by such non-office portion of the Premises. In the event of any conflict between the provisions of this paragraph and any provisions of the Existing Lease governing utilities, the provisions of this paragraph shall prevail.

(b)Mechanical Room.  Effective as of the Fourth Amendment Commencement Date, Section 4(b) of the Second Amendment (Temporary Mechanical Room) shall be deleted in its entirety and have no further force or effect and Tenant shall have sole and exclusive use of the Temporary Common Area (described in such Section 4(b) of the Second Amendment).

(c)Data/Server Room.  Effective as of the Fourth Amendment Commencement Date, Section 4(c) of the Second Amendment (Data/Server Room) shall be deleted in its entirety and have no further force or effect and Tenant shall have sole and exclusive use of the Temporary Data/Server Room (described in Section 4(c) of the Second Amendment).

6.Right of First Offer.  Landlord and Tenant hereby acknowledge and agree that the Fourth Amendment Expansion Premises is the same space described as the “Subordinate Right of First Offer Space” in the Right of First Offer attached as Exhibit B of the First Amendment.  Accordingly, such Right of First Offer shall have no further force or effect with respect to such Subordinate Right of First Offer Space described therein, but shall remain in full force and effect as to the Other Right of First Offer Space described therein.

7.Broker. Landlord and Tenant each represents and warrants to the other that, except for Jones Lang LaSalle (the “Broker”), it has had no dealing with any other broker or agent in connection with the negotiation or execution of this Fourth Amendment, and Tenant agrees to indemnify and hold Landlord harmless from and against any claims by any broker, agent or other person claiming a commission or other form of compensation by virtue of having dealt with Tenant with regards to this leasing transaction, except for the Broker.   Any commission owed to the Broker shall be paid by Landlord pursuant to separate agreement.

8.Counterparts; PDF Signatures. This Fourth Amendment may be executed in two (2) or more counterparts, each of which shall be an original but such counterparts together shall constitute one and the same instrument notwithstanding that both Landlord and Tenant are not signatories to the same counterpart.  PDF signatures shall be binding as originals.

9.Ratification.Except as amended by this Fourth Amendment, all other terms, conditions, covenants and provisions as appear in the Lease are hereby ratified and confirmed and shall remain unchanged.

10.Successors and Assigns.  This Fourth Amendment shall be binding upon and inure

6

to the benefit of the parties hereto and their heirs, successors and permitted assigns.

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

7

IN WITNESS WHEREOF, the parties have caused this Fourth Amendmentto be duly executed under seal as of the date first written above.

LANDLORD:

CHERRY HILL DRIVE OWNER LLC,

a Delaware limited liability company

By:  /s/ Brandon D. Kelly

Name: Brandon D. Kelly

Title: Authorized Signatory

TENANT:

ABIOMED, INC., a Delaware corporation

By: /s/ Michael R. Minogue

Name:Michael R. Minogue

Title:Chairman, President and Chief Executive Officer

8

EXHIBIT A

PLAN OF FOURTH AMENDMENT EXPANSION PREMISES

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Michael R. Minogue, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of ABIOMED, 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)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) 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) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(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: August 2, 2018	/s/ Michael R. Minogue
	Michael R. Minogue
	Chairman, President and Chief Executive Officer (Principal Executive Officer)

EX-31.2

Exhibit 31.2

I, Todd A. Trapp, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of ABIOMED, 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)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) 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) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(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: August 2, 2018	/s/ TODD A. TRAPP
	Todd A. Trapp
	Vice President and Chief Financial Officer (Principal Financial and Accounting Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. § 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of ABIOMED, Inc., (the “Company”) for the quarter ended June 30, 2018, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned President and Chief Executive Officer, and Vice President and Chief Financial Officer, of the Company, certifies, to the best knowledge and belief of the signatory, pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 that:

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

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

/s/ MICHAEL R. MINOGUE	/s/ TODD A. TRAPP
Michael R. Minogue Chairman, President and Chief Executive Officer	Todd A. Trapp Vice President and Chief Financial Officer
Date: August 2, 2018	Date: August 2, 2018

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Document and Entity Information - shares	3 Months Ended
	Jun. 30, 2018	Jul. 27, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Trading Symbol	ABMD
Entity Registrant Name	ABIOMED INC
Entity Central Index Key	0000815094
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		44,877,160

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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Current assets:
Cash and cash equivalents	$ 61,288	$ 42,975
Short-term marketable securities	299,228	319,274
Accounts receivable, net	67,511	70,010
Inventories	55,781	50,204
Prepaid expenses and other current assets	13,489	11,808
Total current assets	497,297	494,271
Long-term marketable securities	6,887	37,502
Property and equipment, net	127,324	117,167
Goodwill	33,948	35,808
In-process research and development	15,837	16,705
Long-term deferred tax assets, net	115,049	70,746
Other assets	15,697	14,176
Total assets	812,039	786,375
Current liabilities:
Accounts payable	25,673	23,565
Accrued expenses	38,930	46,147
Deferred revenue	12,075	14,970
Total current liabilities	76,678	84,682
Other long-term liabilities	815	776
Contingent consideration	10,331	10,490
Long-term deferred tax liabilities	856	903
Total liabilities	88,680	96,851
Commitments and contingencies (Note 11)
Stockholders' equity:
Class B Preferred Stock, $.01 par value Authorized - 1,000,000 shares; Issued and outstanding - none
Common stock, $.01 par value Authorized - 100,000,000 shares; Issued - 45,995,445 shares at December 31 , 2017 and 45,249,281 shares at March 31, 2017 Outstanding - 44,271,905 shares at December 31, 2017 and 43,673,286 shares at March 31, 2017	449	444
Additional paid in capital	637,974	619,905
Retained earnings	230,523	140,457
Treasury stock at cost - 1,891,713 shares at June 30, 2018 and 1,725,312 shares at March 31, 2018	(134,674)	(67,078)
Accumulated other comprehensive loss	(10,913)	(4,204)
Total stockholders' equity	723,359	689,524
Total liabilities and stockholders' equity	$ 812,039	$ 786,375

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2018	Mar. 31, 2018
Statement Of Financial Position [Abstract]
Class B Preferred Stock, par value	$ 0.01	$ 0.01
Class B Preferred Stock, Authorized	1,000,000	1,000,000
Class B Preferred Stock, Issued	0	0
Class B Preferred Stock, outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, Authorized	100,000,000	100,000,000
Common stock, Issued	46,767,984	46,100,649
Common stock, Outstanding	44,876,271	44,375,337
Treasury stock, shares	1,891,713	1,725,312

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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Revenue	$ 180,010	$ 132,468
Costs and expenses:
Cost of revenue	30,850	21,862
Research and development	21,273	16,931
Selling, general and administrative	81,139	60,597
Costs and Expenses, Total	133,262	99,390
Income from operations	46,748	33,078
Other income:
Investment income, net	1,551	635
Other income, net	188	79
Nonoperating Income (Expense), Total	1,739	714
Income before income taxes	48,487	33,792
Income tax benefit	(41,579)	(3,582)
Net income	$ 90,066	$ 37,374
Basic net income per share	$ 2.02	$ 0.85
Basic weighted average shares outstanding	44,546	43,895
Diluted net income per share	$ 1.95	$ 0.82
Diluted weighted average shares outstanding	46,169	45,608

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 90,066	$ 37,374
Other comprehensive (loss) gain:
Foreign currency translation (losses) gains	(6,852)	6,153
Net unrealized gains (losses) on marketable securities	143	(55)
Other comprehensive (loss) gain	(6,709)	6,098
Comprehensive income	$ 83,357	$ 43,472

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities:
Net income	$ 90,066	$ 37,374
Adjustments required to reconcile net income to net cash provided by operating activities:
Depreciation expense	2,959	2,463
Bad debt expense (recovery)	188	(42)
Stock-based compensation	12,245	8,656
Write-down of inventory and other	897	510
Accretion on marketable securities	(363)
Deferred tax provision	(44,463)	(3,830)
Change in fair value of contingent consideration	(159)	265
Changes in assets and liabilities:
Accounts receivable	1,930	795
Inventories	(7,794)	(1,302)
Prepaid expenses and other assets	(2,131)	(915)
Accounts payable	2,684	(4,391)
Accrued expenses and other liabilities	(6,576)	(2,436)
Deferred revenue	(2,852)	(853)
Net cash provided by operating activities	46,631	36,294
Investing activities:
Purchases of marketable securities	(24,702)	(73,626)
Proceeds from the sale and maturity of marketable securities	75,782	66,622
Purchase of other investment	(1,166)	(400)
Purchases of property and equipment	(15,147)	(9,804)
Net cash provided by (used for) investing activities	34,767	(17,208)
Financing activities:
Proceeds from the exercise of stock options	5,798	3,555
Taxes paid related to net share settlement of vesting of stock awards	(67,598)	(17,805)
Principal payments on capital lease obligation		(184)
Net cash used for financing activities	(61,800)	(14,434)
Effect of exchange rate changes on cash	(1,285)	278
Net increase in cash and cash equivalents	18,313	4,930
Cash and cash equivalents at beginning of period	42,975	39,040
Cash and cash equivalents at end of period	61,288	43,970
Supplemental disclosure of cash flow information:
Cash paid for income taxes	2,956	479
Cash paid for interest on capital lease obligation		130
Supplemental disclosure of non-cash investing and financing activities:
Property and equipment in accounts payable and accrued expenses	$ 3,196	$ 1,872

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Nature of Business

3 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Nature of Business

Note 1. Nature of Business

ABIOMED, Inc. (the “Company” or “Abiomed”) is a provider of mechanical circulatory support devices and offers a continuum of care to heart failure patients. The Company develops, manufactures and markets proprietary products that are designed to enable the heart to rest, heal and recover by improving blood flow and/or performing the pumping function of the heart. The Company’s products are used in the cardiac catheterization lab, or cath lab, by interventional cardiologists and in the heart surgery suite by cardiac surgeons for patients who are in need of hemodynamic support prophylactically or emergently before, during or after angioplasty or heart surgery procedures.

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Basis of Preparation and Summary of Significant Accounting Policies

3 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Basis of Preparation and Summary of Significant Accounting Policies

Note 2. Basis of Preparation and Summary of Significant Accounting Policies

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles, or GAAP, for interim financial reporting and in accordance with Article 10 of Regulation S-X. Accordingly, they do not include all of the information and note disclosures required by GAAP for complete financial statements. These statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2018 that has been filed with the Securities and Exchange Commission (“SEC”).

In the opinion of management, the accompanying unaudited condensed consolidated financial statements include all normal and recurring adjustments that are necessary for a fair presentation of results for the interim periods presented. The results of operations for any interim period may not be indicative of results for the full fiscal year or any other subsequent period.

There have been no changes in the Company’s significant accounting policies for the three months ended June 30, 2018 as compared to the significant accounting policies described in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2018 that has been filed with the SEC.

New Accounting Pronouncements Adopted

Effective April 1, 2018, the Company adopted the Financial Accounting Standards Board (“FASB”) standard update ASU 2014-09, “Revenue from Contracts with Customers,” (“Topic 606”) which provides a principles-based, five-step approach to measure and recognize revenue from contracts with customers. The adoption of this guidance did not have a material impact on the Company’s consolidated results of operations, cash flows, and financial position. Additional information and disclosures required by this new standard are contained in “Note 4. Revenue Recognition,” to the Company’s consolidated financial statements.

Effective April 1, 2018, the Company adopted the FASB standard update ASU 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities,” which requires certain financial assets to be measured at fair value with changes in fair value recognized in the statement of operations. The adoption of this guidance did not have a material impact on the Company’s consolidated results of operations, cash flows, and financial position. Additional information and disclosures required by this new standard are contained in “Note 5. Cash Equivalents, Marketable Securities, and Fair Value Measurements,” to the Company’s consolidated financial statements.

On June 20, 2018, the FASB issued ASU 2018-07, “Compensation – Stock Compensation (“Topic 718”): Improvements to Nonemployee Share-Based Payment Accounting,” which simplifies the accounting for share-based payments granted to nonemployees for goods and services. ASU 2018-07 eliminated the previous guidance for accounting for share-based payments to nonemployees and expand Topic 718 to include share-based payments transactions to nonemployees. ASU 2018-07 is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. Early adoption is permitted, but no earlier than an entity’s adoption date of Topic 606. The adoption of ASU 2018-07 requires a modified retrospective transition approach, with a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year. The Company early adopted ASU 2018-07 on June 20, 2018. The adoption of this guidance did not have a material impact on the Company’s consolidated results of operations, cash flows, and financial position.

Recent Accounting Pronouncements

In February 2016, the FASB issued ASU 2016-02, “Leases.” The new guidance significantly impacts lessee accounting and financial statement disclosures.  Specifically, this guidance requires lessees to identify arrangements that should be accounted for as leases. Under this guidance, for lease arrangements exceeding a one year term, a right-of-use asset and lease obligation is recorded by the lessee for all leases on the balance sheet, whether operating or financing, while the statement of operations includes lease expense for operating leases and amortization and interest expense for financing leases. The balance sheet amount recorded at the date of adoption of this guidance must be calculated using the applicable incremental borrowing rate at the date of adoption. Leases with a term of one year or less will be accounted for similar to existing guidance for operating leases. The Company is currently in the process of evaluating its lessee arrangements to determine the impact of ASU 2016-02 on its consolidated financial statements. This evaluation includes a review of the Company’s existing leasing arrangements on its facilities. The Company currently expects that its lease commitments will be recognized as operating lease liabilities and right-of-use assets upon adoption, which will increase total assets and total liabilities that the Company reports relative to such amounts prior to adoption. ASU 2016-02 must be adopted using a modified retrospective approach for all leases existing at, or entered into after the date of initial adoption, with an option to elect to use certain transition relief.  ASU 2016-02 will become effective for the Company on April 1, 2019.

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Net Income Per Share

3 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Net Income Per Share

Note 3. Net Income Per Share

Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per share is computed by dividing net income by the weighted average number of dilutive common shares outstanding during the period. Diluted shares outstanding are calculated by adding to the weighted average shares outstanding any potential dilutive securities outstanding for the period. Potential dilutive securities include stock options, restricted stock units, performance-based stock awards and shares to be purchased under the Company’s employee stock purchase plan. The Company’s basic and diluted net income per share for the three months ended June 30, 2018 and 2017 were as follows (in thousands, except per share data):

	For the Three Months Ended June 30,
	2018		2017
Basic Net Income Per Share
Net income	$	90,066	$	37,374
Weighted average shares used in computing basic net    income per share		44,546		43,895
Net income per share - basic	$	2.02	$	0.85

	For the Three Months Ended June 30,
	2018		2017
Diluted Net Income Per Share
Net income	$	90,066	$	37,374
Weighted average shares used in computing basic net    income per share		44,546		43,895
Effect of dilutive securities		1,623		1,713
Weighted average shares used in computing diluted    net income per share		46,169		45,608
Net income per share - diluted	$	1.95	$	0.82

For the three months ended June 30, 2018, approximately 36,000 shares underlying out-of-the-money stock options were excluded in the computation of diluted earnings per share because their effect would have been anti-dilutive. Also, approximately 85,000 restricted shares in the three months ended June 30, 2018, related to performance-based awards for which milestones have not been met, were not included in the computation of diluted earnings per share.

For the three months ended June 30, 2017, approximately 54,000 shares underlying out-of-the-money stock options were excluded in the computation of diluted earnings per share because their effect would have been anti-dilutive. Also, approximately 80,000restricted shares in the three months ended June 30, 2017, related to performance-based and market-based awards for which milestones have not been met, were not included in the computation of diluted earnings per share.

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Revenue Recognition

3 Months Ended

Jun. 30, 2018

Revenue Recognition And Deferred Revenue [Abstract]

Revenue Recognition

Note 4. Revenue Recognition

Adoption of Topic 606, Revenue from Contracts with Customers

The Company adopted Topic 606 on April 1, 2018, using the modified retrospective method for all contracts not completed as of the date of adoption. The reported results for fiscal year 2019 reflect the application of Topic 606 guidance while the reported results for fiscal year 2018 were prepared under the guidance of ASC 605, “Revenue Recognition.” The adoption of Topic 606 did not have a material impact on the timing or amount of revenue recognized upon adoption and there was no cumulative prior period adjustment recorded to the opening balance of retained earnings upon adoption. Accordingly, the adoption of Topic 606 did not have a material impact on the Company’s consolidated financial position, results of operations, equity or cash flows as of the adoption date or for the three months ended June 30, 2018.

The Company has made the following accounting policy elections and elected to use certain practical expedients, as permitted by the FASB, in applying Topic 606: (1) the Company accounts for amounts collected from customers for sales and other taxes, net of related amounts remitted to tax authorities; (2) the Company does not adjust the promised amount of consideration for the effects of a significant financing component because, at contract inception, the Company expects the period between the time when the Company transfers a promised good or service to the customer and the time when the customer pays for that good or service will be one year or less; (3) the Company expenses costs to obtain a contract as they are incurred if the expected period of benefit, and therefore the amortization period, is one year or less; (4) the Company accounts for shipping and handling activities that occur after control transfers to the customer as a fulfillment cost rather than an additional promised service and these fulfillment costs fall within selling, general and administrative expenses; (5) the Company does not assess whether promised goods or services are performance obligations if they are immaterial in the context of the contract with the customer; and (6) the Company does not disclose the transaction price allocated to unsatisfied performance obligations when the original expected contract duration is one year or less.

The Company generates revenue primarily from the sale of Impella 2.5, Impella CP, Impella 5.0, Impella LD, Impella RP and Impella AIC devices. The Company also generates revenue from preventative maintenance service contracts and maintenance calls.

The Company determines revenue recognition through the following steps:

• Identification of the contract, or contracts, with a customer

• Identification of the performance obligation in the contract

• Determination of the transaction price

• Allocation of the transaction price to the performance obligation in the contract

• Recognition of revenue when, or as, a performance obligation is satisfied

Contracts and Performance Obligations

The Company accounts for a contract with a customer when there is an approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of the consideration is probable. The Company's performance obligations consist mainly of transferring control of products and services identified in the contracts, purchase orders or invoices. For each contract, the Company considers the obligation to transfer products and services to the customer, each of which are distinct, to be performance obligations.

Transaction price and allocation to performance obligations

Transaction prices of products or services are typically based on contracted rates. To the extent that the transaction price includes variable consideration, the Company estimates the amount of variable consideration that should be included in the transaction price utilizing the expected value method or the most likely amount, depending on the circumstances, to which the Company expects to be entitled. Variable consideration is included in the transaction price if, in the Company’s judgment, it is probable that a significant future reversal of cumulative revenue under the contract will not occur.  Estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on an assessment of the Company’s anticipated performance and all information (historical, current and forecasted) that is reasonably available.  Sales and other taxes collected on behalf of third parties are excluded from revenue.

The Company does not provide for rights of return to customers on product sales and, therefore, does not record a provision for returns. Customers typically have a limited time frame to notify the Company of any defective or non-conforming products. The Company’s limited warranty provision is accounted for using the cost accrual method and is recognized as expense when products are sold and is not considered a separate performance obligation.

If a contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price based on the estimated relative standalone selling prices of the promised products or services underlying each performance obligation. The Company determines standalone selling prices based on the price at which the performance obligation is sold separately.  

Revenue Recognition

Revenue is recognized when, or as, obligations under the terms of a contract are satisfied, which occurs when control of the promised products or services is transferred to customers.  Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products or services to a customer.

Product revenue is generally recognized when the customer obtains control of the Company’s product, which occurs at a point in time, and may be upon shipment or upon delivery based on the contractual shipping terms of a contract.

Service revenue is generally recognized over time as the services are rendered to the customer based on the extent of progress towards completion of the performance obligation. The Company recognizes service revenue over the term of the service contract. Services are expected to be transferred to the customer throughout the term of the contract and the Company believes recognizing revenue ratably over the term of the contract best depicts the transfer of value to the customer. Revenue generated from preventative maintenance calls is recognized at a point in time when the services are provided to the customer.

Revenue from the sale of products and services are evidenced by either a contract with the customer or a valid purchase order and an invoice which includes all relevant terms of sale. The Company performs a review of each specific customer's credit worthiness and ability to pay prior to acceptance as a customer. Further, the Company performs periodic reviews of its customers' creditworthiness prospectively.

Disaggregation of Revenue

The Company generally sells its Impella products and services through a direct sales force in the U.S. and through direct sales and distribution agreements in international markets outside of the U.S., primarily in Japan and certain European countries (eg: Germany, France, Switzerland). Revenue is disaggregated from contracts between products and services and by geography, which the Company believes best depicts how the nature, amount, timing, and uncertainty of revenues and cash flows are affected by economic factors.

The following table disaggregates the Company’s revenue:

	For the Three Months Ended June 30,
		2018		2017
	(in $000's)
Impella product revenue	$	173,675	$	127,193
Service and other revenue		6,335		5,275
Total revenue	$	180,010	$	132,468

The following table disaggregates the Company’s revenue by geographical location:

	For the Three Months Ended June 30,
		2018		2017
	(in $000's)
U.S. revenue	$	157,595	$	119,665
International revenue		22,415		12,803
Total revenue	$	180,010	$	132,468

Reserves for Variable Consideration

Revenues from product sales are recorded at the net sales price (transaction price), which includes estimates of variable consideration for which reserves are established and which result from discounts or rebates that are offered within contracts between the Company and its customers relating to the Company’s sales of its products.  These reserves are based on the amounts earned or are expected to be claimed on the related sales and are classified as reductions of accounts receivable.  Where appropriate, these estimates take into consideration relevant factors such as the Company’s historical experience, current contractual and statutory requirements, specific known market events and trends, industry data and forecasted customer buying and payment patterns.  These reserves reflect the Company’s best estimates of the amount of consideration to which it is entitled based on the terms of the contract.  Actual amounts of consideration ultimately received may differ from the Company’s estimates.  If actual results in the future vary from the Company’s estimates, the Company adjusts these estimates, which would affect net product revenue and earnings in the period such variances become known.

Rebates and Discounts  

The Company provides certain customers with rebates and discounts that are defined in the Company’s contract arrangements with customers and are recorded as a reduction of revenue in the period the related product revenue is recognized, resulting in a reduction to revenue and the establishment of a liability, which are all included in accrued expenses in the accompanying unaudited consolidated balance sheets. Rebates normally result from performance-based offers that are primarily based on attaining contractually specified sales volumes as well as product usage.  Discounts are normally from early payment incentives. The Company estimates the amount of rebates and discounts based on an estimate of the third party’s sales and the respective rebate, and the discount defined in the customer contractual arrangement.

The following table summarizes activity in each of the product revenue rebate and discount categories for the three months ended June 30, 2018 (in thousands):

	Rebates and Discounts
Balance at March 31, 2018	$	1,405
Provision related to current period sales		442
Credits and adjustments made during the period		(396	)
Balance at June 30, 2018	$	1,451

Contract Balances

The timing of revenue recognition, billings and cash collections results in trade receivables and deferred revenue on the consolidated balance sheet. A receivable is recognized in the period the Company’s right to the consideration is unconditional. The change in the accounts receivable and unbilled receivable balances relate to the timing of revenue recognition, billings and cash collections. The Company generally does not have any contracts or performance obligations with a term of more than one year.

Payment terms vary by contract type and type of customer and generally range from 30 to 60 days. The Company’s contracts with customers do not typically include extended payment terms.

Deferred Revenue

When consideration is received, or such consideration is unconditionally due, from a customer prior to transferring goods or services to the customer under the terms of a contract, deferred revenue is recorded. Deferred revenue is recognized as revenue after control of the products or services is transferred to the customer and all revenue recognition criteria have been met.

The Company’s deferred revenue balance was $12.1 million as of June 30, 2018 and $15.0 million as of March 31, 2018. The change relates to the timing of product shipment and completion of recognizing revenue when the customer obtains control of the product and additional preventative maintenance service contracts and the subsequent recognition of the contract ratably over the term of the service contract. During the three months ended June 30, 2018, the Company recognized $8.6 million of revenue that was included in the deferred revenue balance as of March 31, 2018.

Costs to Obtain or Fulfill a Customer Contract

The Company has certain costs to obtain and fulfill a customer contract, such as commissions and shipping costs, respectively. The Company recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that the Company otherwise would have recognized is one year or less. The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill the promise to transfer the associated products. These costs are included in selling, general, and administrative expenses.

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Cash Equivalents Marketable Securities and Fair Value Measurements

3 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Cash Equivalents, Marketable Securities and Fair Value Measurements

Note 5. Cash Equivalents, Marketable Securities and Fair Value Measurements

The Company classifies any marketable security with a maturity date of 90 days or less at the time of purchase as a cash equivalent. Cash equivalents are carried on the balance sheet at fair market value. The Company’s marketable securities, consisting of U.S. Treasuries, U.S. Government Agency, and corporate debt securities, are classified as available-for-sale securities and, accordingly, are recorded at fair value. The difference between amortized cost and fair value is included in stockholders’ equity. At June 30, 2018 and March 31, 2018, the Company’s financial instruments consist primarily of cash and cash equivalents, marketable securities, accounts receivable, accounts payable and contingent consideration. The carrying amounts of accounts receivable and accounts payable are considered reasonable estimates of their fair value, due to the short maturity of these investments.

The Company’s cash equivalents and marketable securities at June 30, 2018 and March 31, 2018 are classified on the balance sheet as follows:

	June 30, 2018		March 31, 2018
	(in $000's)
Cash equivalents	$	29,910	$	22,595
Short-term marketable securities		299,228		319,274
Long-term marketable securities		6,887		37,502
	$	336,025	$	379,371

The Company’s cash equivalents and marketable securities at June 30, 2018 and March 31, 2018 are invested in the following:

	Amortized		Gross Unrealized		Gross Unrealized			Fair Market
	Cost		Gains		Losses			Value
	(in $000's)
June 30, 2018:
Money market funds	$	29,910	$	—	$	—		$	29,910
Short-term U.S. Treasury mutual fund securities		23,024		—		(44	)		22,980
Short-term government-backed securities		210,836		—		(463	)		210,373
Short-term corporate debt securities		36,439		—		(97	)		36,342
Short-term commercial paper		29,549		—		(16	)		29,533
Long-term U.S. Treasury mutual fund securities		6,888		—		(1	)		6,887
	$	336,646	$	—	$	(621	)	$	336,025

	Amortized		Gross Unrealized		Gross Unrealized			Fair Market
	Cost		Gains		Losses			Value
	(in $000's)
March 31, 2018:
Money market funds	$	5,845	$	—	$	—		$	5,845
Repurchase agreements		16,750		—		—			16,750
Short-term U.S. Treasury mutual fund securities		18,132		—		(29	)		18,103
Short-term government-backed securities		212,255		3		(538	)		211,720
Short-term corporate debt securities		52,737		—		(161	)		52,576
Short-term commercial paper		36,936		2		(63	)		36,875
Long-term U.S. Treasury mutual fund securities		10,953		—		(16	)		10,937
Long-term government-backed securities		24,798		1		(12	)		24,787
Long-term corporate debt securities		1,777		1		—			1,778
	$	380,183	$	7	$	(819	)	$	379,371

Fair Value Hierarchy

Fair value is defined as the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Financial assets and liabilities carried at fair value are to be classified and disclosed in one of the following three categories:

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 that are not corroborated by market data.

Level 1 primarily consists of financial instruments whose values are based on quoted market prices such as exchange-traded instruments and listed equities.

Level 2 includes financial instruments that are valued using models or other valuation methodologies. These models are primarily industry-standard models that consider various assumptions, including time value, yield curve, volatility factors, prepayment speeds, default rates, loss severity, current market and contractual prices for the underlying financial instruments, as well as other relevant economic measures. Substantially all of these assumptions are observable in the marketplace, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace.

Level 3 is comprised of unobservable inputs that are supported by little or no market activity. Financial assets are considered Level 3 when their fair values are determined using pricing models, discounted cash flows, or similar techniques, and at least one significant model assumption or input is unobservable.

The following table presents the Company’s financial instruments recorded at fair value in the condensed consolidated balance sheets, classified according to the three categories described above:

	Level 1		Level 2		Level 3		Total
June 30, 2018:	(in $000's)
Assets
Money market funds	$	29,910	$	—	$	—	$	29,910
Short-term U.S. Treasury mutual fund securities		—		22,980		—		22,980
Short-term government-backed securities		—		210,373		—		210,373
Short-term corporate debt securities		—		36,342		—		36,342
Short-term commercial paper		—		29,533		—		29,533
Long-term U.S. Treasury mutual fund securities		—		6,887		—		6,887
Liabilities
Contingent consideration		—		—		10,331		10,331

	Level 1		Level 2		Level 3		Total
March 31, 2018:	(in $000's)
Assets
Money market funds	$	5,845	$	—	$	—	$	5,845
Repurchase agreements		—		16,750		—		16,750
Short-term U.S. Treasury mutual fund securities		—		18,103		—		18,103
Short-term government-backed securities		—		211,720		—		211,720
Short-term corporate debt securities		—		52,576		—		52,576
Short-term commercial paper		—		36,875		—		36,875
Long-term U.S. Treasury mutual fund securities		—		10,937		—		10,937
Long-term government-backed securities		—		24,787		—		24,787
Long-term corporate debt securities		—		1,778		—		1,778
Liabilities
Contingent consideration		—		—		10,490		10,490

The Company has determined that the estimated fair value of its money market funds are reported as Level 1 financial assets as they are valued at quoted market prices in active markets.

The Company has determined that the estimated fair value of its investments in U.S. Treasury mutual fund securities, government-backed securities, corporate debt securities, repurchase agreements and commercial paper are reported as Level 2 financial assets as they are not exchange-traded instruments.

The Company’s financial liabilities consisted of contingent consideration potentially payable related to the acquisition of ECP Entwicklungsgesellschaft mbH, (“ECP”) and AIS GmbH Aachen Innovative Solutions, or AIS, in July 2014. The Company acquired ECP for $13.0 million in cash, with additional potential payouts totaling $15.0 million based on the achievement of CE Mark approval in the European Union and a revenue-based milestone related to the development of the future Impella ECP^TM expandable catheter pump technology. These potential milestone payments may be made, at the Company’s option, by a combination of cash or Abiomed common stock. As of June 30, 2018, the Company used a combination of an income approach, based on various revenue and cost assumptions and applying a probability to each outcome and a Monte-Carlo valuation model. For the clinical and regulatory milestone, probabilities were applied to each potential scenario and the resulting values were discounted using a rate that considers weighted average cost of capital as well as a specific risk premium associated with the riskiness of the earn out itself, the related projections, and the overall business. The revenue-based milestone is valued using a Monte-Carlo valuation model, which simulates estimated future revenues during the earn out-period using management's best estimates. Projected revenues are based on our most recent internal operational budgets and long-range strategic plans.

This liability is reported as Level 3 as the estimated fair value of the contingent consideration related to the acquisition of ECP requires significant management judgment or estimation and is calculated using the following valuation methods:

	Milestone Payment		Fair Value at June 30, 2018 (in $000's)		Valuation Methodology	Significant Unobservable Input	Weighted Average (range, if applicable)
Clinical and regulatory milestone	$	7,000	$	5,712	Probability weighted income approach	Projected fiscal year of milestone payments	2019 to 2022
						Discount rate	3.9% to 4.2%
						Probability of occurrence	Probability adjusted level of 40% for the base case scenario and 10% to 40% for various upside and downside scenarios
Revenue-based milestone		8,000		4,619	Monte Carlo simulation model	Projected fiscal year of milestone payments	2024 to 2035
						Discount rate	14%
						Expected volatility for forecasted revenues	50%
						Probability of payment	78%
	$	15,000	$	10,331

The following table summarizes the change in fair value, as determined by Level 3 inputs, of the contingent consideration for the three months ended June 30, 2018 and 2017:

	For the Three Months Ended June 30,
		2018			2017
	(in $000's)
Level 3 liabilities, beginning balance	$	10,490		$	9,153
Additions		—			—
Payments		—			—
Change in fair value		(159	)		265
Level 3 liabilities, ending balance	$	10,331		$	9,418

The change in fair value of the contingent consideration was primarily due to the impact of changes in interest rates, passage of time on the fair value measurement and the status of development of the underlying technology related to the ECP acquisition. Adjustments associated with the change in fair value of contingent consideration are included in research and development expenses in the Company’s condensed consolidated statements of operations. Significant increases or decreases in any of the probabilities of success or changes in expected timelines for achievement of any of these milestones could result in a significantly higher or lower fair value of the liability. The fair value of the contingent consideration at each reporting date is updated by reflecting the changes in fair value in the Company’s statement of operations. There is no assurance that any of the conditions for the milestone payments will be met. 

Other Investments

The Company periodically makes investments in private medical device companies that focus on heart failure, heart pump and other medical device technologies. The aggregate carrying amount of the Company’s other investments was $13.8 million and $12.6 million at June 30, 2018 and March 31, 2018, respectively, and is classified within other assets in the unaudited condensed consolidated balance sheets. During the three months ended June 30, 2018, the Company made an additional investment of $1.2 million in a private medical device company.

On August 1, 2018, the Company made an investment of approximately $5.8 million in a private medical device company.  The Company is evaluating the accounting for this transaction and will record the transaction during the quarter ended September 30, 2018.  

On April 1, 2018, the Company adopted ASU 2016-01. This guidance requires equity investments to be measured at fair value with changes in fair value recognized in net income.  Since these investments do not have readily determinable market values, the Company has elected to measure these investments at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investment.  No adjustments have been made to the value of the Company’s investments in these private medical device companies for the three months ended June 30, 2018 either due to impairment or based on observable price changes. The Company monitors any events or changes in circumstances that may have a significant adverse effect on the fair value of this investment and makes any necessary adjustments.

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Property and Equipment

3 Months Ended

Jun. 30, 2018

Property Plant And Equipment [Abstract]

Property and Equipment

Note 6. Property and Equipment

The components of property and equipment are as follows:

	June 30, 2018			March 31, 2018
	(in $000's)
Land	$	7,437		$	7,680
Building and building improvements		63,829			63,700
Leasehold improvements		2,183			2,905
Machinery and equipment		47,766			42,787
Furniture and fixtures		8,187			8,104
Construction in progress		27,525			19,850
Total cost		156,927			145,026
Less accumulated depreciation		(29,603	)		(27,859	)
	$	127,324		$	117,167

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Goodwill and In-Process Research and Development

3 Months Ended

Jun. 30, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and In-Process Research and Development

Note 7. Goodwill and In-Process Research and Development

The carrying amount of goodwill at June 30, 2018 and March 31, 2018 was $33.9 million and $35.8 million, respectively, and has been recorded in connection with the Company’s acquisition of Impella Cardiosystems AG, in May 2005 and ECP and AIS in July 2014. The goodwill activity is as follows:

	(in $000's)
Balance at March 31, 2018	$	35,808
Foreign currency translation impact		(1,860	)
Balance at June 30, 2018	$	33,948

The Company evaluates goodwill and in-process research and development (“IPR&D”) assets at least annually at October 31, as well as whenever events or changes in circumstances suggest that the carrying amount may not be recoverable.  The Company has no accumulated impairment losses on goodwill or IPR&D assets.

The carrying amount of IPR&D assets at June 30, 2018 and March 31, 2018 was $15.8 million and $16.7 million, respectively, and was recorded in conjunction with the Company’s acquisition of ECP and AIS, in July 2014. The estimated fair value of IPR&D assets at the acquisition date was determined using a probability-weighted income approach, which discounts expected future cash flows to present value. The projected cash flow estimates for the future Impella ECP^TM expandable catheter pump technology were based on certain key assumptions, including estimates of future revenue and expenses, taking into account the stage of development of the technology at the acquisition date and the time and resources needed to complete development. The Company used an original discount rate of 21% and cash flows that have been probability adjusted to reflect the risks of product commercialization, which the Company believes are appropriate and representative of market participant assumptions.

The carrying value of the Company’s IPR&D assets and the change in the balance for the three months ended June 30, 2018 are as follows:

	(in $000's)
Balance at March 31, 2018	$	16,705
Foreign currency translation impact		(868	)
Balance at June 30, 2018	$	15,837

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Accrued Expenses

3 Months Ended

Jun. 30, 2018

Payables And Accruals [Abstract]

Accrued Expenses

Note 8. Accrued Expenses

Accrued expenses consist of the following:

	June 30, 2018		March 31, 2018
	(in $000's)
Employee compensation	$	24,267	$	30,330
Sales and income taxes		4,841		4,562
Research and development		2,373		3,162
Marketing		2,057		2,305
Professional, legal, and accounting fees		1,588		1,870
Warranty		1,086		1,081
Accrued capital expenditures		—		250
Other		2,718		2,587
	$	38,930	$	46,147

Employee compensation consists primarily of accrued bonuses, accrued commissions, accrued employee benefits, and accrued payroll taxes (on equity awards) at June 30, 2018 and March 31, 2018.

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Stock-Based Compensation

3 Months Ended

Jun. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation

Note 9. Stock-Based Compensation

The following table summarizes stock-based compensation expense by financial statement line item in the Company’s condensed consolidated statements of operations for the three months ended June 30, 2018 and 2017:

	For the Three Months Ended June 30,
		2018		2017
	(in $000's)
Cost of product revenue	$	575	$	359
Research and development		1,966		1,339
Selling, general and administrative		9,704		6,958
	$	12,245	$	8,656

Stock Options

The following table summarizes the stock option activity for the three months ended June 30, 2018:

						Weighted
				Weighted		Average		Aggregate
				Average		Remaining		Intrinsic
	Options			Exercise		Contractual		Value
	(in thousands)			Price		Term (years)		(in thousands)
Outstanding at beginning of period		1,282		$	46.18		5.31
Granted		72			383.44
Exercised		(282	)		20.53
Cancelled and expired		(4	)		112.32
Outstanding at end of period		1,068		$	76.20		6.02	$	355,461
Exercisable at end of period		780		$	36.08		5.03	$	290,953
Options vested and expected to vest at end of period		1,048		$	76.12		5.99	$	348,886

Stock options generally vest and become exercisable annually over three years. The remaining unrecognized stock-based compensation expense for unvested stock option awards at June 30, 2018 was approximately $18.0 million and the estimated weighted-average period over which this cost will be recognized is 2.5 years.

The aggregate intrinsic value of options exercised was $106.7 million for the three months ended June 30, 2018. The total cash received as a result of employee stock option exercises for the three months ended June 30, 2018 was approximately $5.8 million.

The Company estimates the fair value of each stock option granted at the grant date using the Black-Scholes option valuation model. The weighted average grant-date fair values and weighted average assumptions used in the calculation of fair value of options granted during the three months ended June 30, 2018 and 2017 was as follows:

	For the Three Months Ended June 30,
		2018			2017
Weighted average grant-date fair value	$	142.51		$	49.04
Valuation assumptions:
Risk-free interest rate		2.93	%		1.84	%
Expected option life (years)		4.04			4.07
Expected volatility		42.6	%		43.7	%

Restricted Stock Units

The following table summarizes activity of restricted stock units for the three months ended June 30, 2018:

	Number of Shares			Weighted Average Grant Date Fair Value
	(in thousands)			(per share)
Restricted stock units at beginning of period		880		$	109.01
Granted		183		$	378.88
Vested		(385	)	$	101.74
Forfeited		(7	)	$	145.52
Restricted stock units at end of period		671		$	186.48

Restricted stock units generally vest annually over three years. The remaining unrecognized compensation expense for outstanding restricted stock units, including performance and market-based awards, as of June 30, 2018 was $79.5 million and the estimated weighted-average period over which this cost will be recognized is 2.4 years.

The weighted average grant-date fair value for restricted stock units granted during the three months ended June 30, 2018 was $378.88. The total fair value of restricted stock units vested during the three months ended June 30, 2018 was $156.1 million.

Performance-Based Awards

In May 2018, performance-based awards of restricted stock units for the potential issuance of approximately 114,000 shares of common stock were issued to certain executive officers and employees, which vest upon achievement of prescribed service milestones by the award recipients and performance milestones by the Company. As of June 30, 2018, the Company is recognizing compensation expense based on the probable outcome related to the prescribed performance targets on the outstanding awards.

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Income Taxes

3 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Note 10. Income Taxes

In December 2017, the Tax Cut and Jobs Act, (“Tax Reform Act”) was signed into law. The Tax Reform Act included significant changes to existing law, including among other items, a reduction to the U.S. federal statutory corporate tax rate from 35% to 21% effective January 1, 2018. ASC 740, Income Taxes (Topic 740) requires that the effects of changes in tax laws or rates be recognized in the period in which the law is enacted. Those effects, both current and deferred, are reported as part of the tax provision, regardless of income in which the underlying pretax income (expense) or asset (liability) was or will be reported.

As a result of the Tax Reform Act, the Company’s U.S. federal statutory corporate income tax rate of 21% was applied in the computation of the income tax provision for the three months ended June 30, 2018.

The Company’s income tax benefit was $41.6 million and $3.6 million for the three months ended June 30, 2018 and 2017, respectively. The Company’s effective tax rate was (85.8)% and (10.6)% for the three months ended June 30, 2018 and 2017, respectively. Consistent with guidance issued by the SEC, which provides for a measurement period of one year from the enactment date to finalize the accounting for effects of the Tax Reform Act, the Company provisionally remeasured its net deferred tax assets due to the lower U.S. federal statutory corporate tax rate during the year ended March 31, 2018. The Company’s provisional estimate reflects estimable current year impacts of the Tax Reform Act on the Company’s estimated annual effective tax rate and discrete items resulting directly from the enactment of the Tax Reform Act based on the information available, prepared, or analyzed (including computations) in reasonable detail. Any adjustments to this provisional estimate will be recorded as adjustments to income tax expense in the period in which those adjustments become estimable and/or are finalized, if necessary. No adjustments were made to the Company’s provisional estimate during the three months ended June 30, 2018. The Company will continue to evaluate information related to the Tax Reform Act and could make additional adjustments in the future to its estimate of net deferred tax assets and income tax expense during the measurement period of one year from the enactment date.

The Company recognizes excess tax benefits and shortfalls in the income tax provision as discrete items in the period when restricted stock units vest or stock option exercises occur, whereas previously such income tax effects were recorded as part of additional paid-in capital only when the related tax deduction resulted in a reduction of current income taxes payable. The Company recognized excess tax benefits associated with stock-based awards of $53.8 million and $16.8 million as an income tax benefit for the three months ended June 30, 2018 and 2017, respectively. These recognized excess tax benefits resulted from restricted stock units that vested or stock options that were exercised during the three months ended June 30, 2018 and 2017, respectively. The amount of future excess tax benefits or shortfalls will likely fluctuate from period to period based on the price of the Company’s stock, the number of restricted stock unit vestings or stock option exercises, and the fair value assigned to such stock-based awards under U.S. GAAP.

The significant differences between the statutory income tax rate and effective income tax rate for the three months ended June 30, 2018 and 2017 were as follows:

	For the Three Months Ended June 30,
		2018			2017
Statutory income tax rate		21.0		%	35.0		%
Increase resulting from:
Excess tax benefits from stock-based awards		(111.0	)		(49.8	)
Credits		(1.8	)		(1.2	)
State taxes, net		4.3			3.5
Permanent differences		1.6			1.8
Other		0.1			0.1
Effective tax rate		(85.8	)	%	(10.6	)	%

The recently enacted Tax Reform Act allows for a 100% deduction for the potential repatriation of foreign subsidiary earnings with minimal U.S. income tax consequences other than the one-time deemed repatriation toll charge. Since most of the Company’s cash and cash equivalents held by foreign subsidiaries which are disregarded entities for domestic tax purposes, any repatriation of such funds to the U.S. would likely have a nominal tax impact.

The Company and its subsidiaries are subject to U.S. federal income tax, as well as income tax of multiple state and foreign jurisdictions. Fiscal years 2012 through 2017 remain open to examination in Germany and Abiomed Europe GmbH, the Company’s main operating subsidiary in Germany, is currently being audited for fiscal years 2012 through 2015. In July 2017, the Company was notified by the Internal Revenue Service, (“IRS”), that it has selected the Company’s federal tax return for fiscal 2016 for examination. All tax years remain subject to examination by the IRS and state tax authorities, because the Company has net operating loss and tax credit carryforwards which may be utilized in future years to offset taxable income.

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Commitments and Contingencies

3 Months Ended

Jun. 30, 2018

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 11. Commitments and Contingencies

Commitments

Leases

In February 2017, the Company entered into a lease agreement for 21,603 square feet of office space in Danvers, Massachusetts which expires on July 31, 2022. In December 2017, the Company entered into an amendment to this lease to extend the term through August 31, 2025 and to add an additional 6,607 square feet of space in which rent began on June 1, 2018. In March 2018, the Company entered into an amendment to the lease to add an additional 11,269 square feet of space for which rent began on June 1, 2018 through August 31, 2025.  In July 2018, the Company entered into an amendment to lease an additional 23,864 square feet of space from October 1, 2018 through September 30, 2027. With this amendment, the Company will lease 63,343 square feet in total at this location.  The Company also has a right of first offer to purchase the property from January 1, 2018 through August 31, 2035, if the lessor decides to sell the building or receives an offer to purchase the building from a third-party buyer.  The annual rent expense for the lease is estimated to be $0.9 million.

In September 2016, the Company entered into a lease agreement for an office in Berlin, Germany which commenced in May 2017 and expires in May 2024. The annual rent expense for the lease is estimated to be $0.3 million.

In October 2016, the Company entered into a lease agreement for an office in Tokyo, Japan which expires in September 2021. The office houses administrative, regulatory, and training personnel in connection with the Company’s commercial launch in Japan. The annual rent expense for the lease is estimated to be $0.9 million.

Contingencies

From time to time, the Company is involved in legal and administrative proceedings and claims of various types. In some actions, the claimants seek damages, as well as other relief, which, if granted, would require significant expenditures. The Company records a liability in its consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. The Company reviews these estimates each accounting period as additional information is known and adjusts the loss provision when appropriate. If a matter is both probable to result in liability and the amount of loss can be reasonably estimated, the Company estimates and discloses the possible loss or range of loss. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in its consolidated financial statements.

Thoratec Matters

Thoratec Corporation, or Thoratec, a subsidiary of Abbott Laboratories, has challenged a number of Company owned patents in Europe in connection with the launch of their HeartMate PHP medical device, or PHP, in Europe. These actions relate to Thoratec’s ability to manufacture and sell their PHP product in Europe. These actions do not relate to the Company’s ability to manufacture or sell its Impella line of devices.

In December 2014, Thoratec filed a nullity suit in the German Federal Patent Court against a German “pigtail” patent owned by the Company with a flexible extension feature, and auxiliary pigtail, basket and funnel features. The validity hearing was held in November 2016 and the Federal Patent Court found the patent invalid. The Company is appealing this decision.

In August 2015, Thoratec filed a nullity action in the German Federal Patent Court against two Company owned patents covering a “magnetic clutch” feature. These magnetic clutch patents were acquired by the Company in July 2014, in connection with its acquisition of ECP and AIS. The validity hearing for the magnetic clutch patents was held in June 2017. The Company’s patents were upheld in an amended form to focus on the structure and interaction of the magnets in the clutch. The Federal Patent Court found certain unamended claims to be invalid.  The Company is appealing the decision with respect to the unamended claims.

In September 2015, the Company filed counterclaims in the magnetic clutch action in Germany asserting that the PHP product infringes the two magnetic clutch patents, a European pigtail patent, and the German pigtail patent. The infringement trial has been stayed, pending resolution of the German nullity actions.  

In February 2017, Thoratec filed an opposition in the European Patent Office, (“EPO”), against a Company owned patent acquired in connection with the acquisition of ECP and AIS relating to a housing structure for an expandable pump. The Company filed an initial response to the opposition in July 2017. Oral proceedings are scheduled for October 26, 2018.  In December 2017, Thoratec filed an opposition in the EPO against a Company owned patent acquired in connection with the acquisition of ECP and AIS relating to a pump having a shaft cap with an atraumatic ball. The Company responded to the opposition on May 27, 2018 and is awaiting a preliminary opinion from the EPO Opposition Division.  

Maquet Matters

In December 2015, the Company received a letter from Maquet Cardiovascular LLC, or Maquet, a subsidiary of the Getinge Group, asserting that the Company’s Impella devices infringe certain claims having guidewire, lumen and sensor features, which were in two Maquet patents and one pending patent application in the U.S. and elsewhere, and attached a draft litigation complaint and encouraged the Company to take a license from Maquet.  In January 2016, the Company responded to Maquet stating that it believed that the cited claims were invalid and that its Impella devices did not infringe the cited patents.  In May 2016, Maquet notified the Company that its pending U.S. patent application had been issued as a U.S. patent, repeated their earlier assertion and encouraged the Company to discuss taking a license from Maquet. The three patents expire September 2020, December 2020 and October 2021. In May 2016, the Company filed suit in U.S. District Court for the District of Massachusetts, (“D. Mass.”), against Maquet seeking a declaratory judgment that the Company’s Impella devices do not infringe Maquet’s cited patent rights.  

In August 2016, Maquet sent a letter to the Company identifying four new U.S. continuation patent filings with claims that Maquet alleges are infringed by the Company’s Impella devices. Of the four U.S. continuation applications, one issued as a patent on January 17, 2017, one issued as a patent on February 7, 2017, one issued as a patent on March 21, 2017, and one issued as a patent on October 17, 2017.  These four issued patents will expire in September 2020.

In September 2016, Maquet filed a response to the Company’s suit in D. Mass., including various counterclaims alleging that the Company’s Impella 2.5, Impella CP, Impella 5.0, and Impella RP heart pumps infringe certain claims of the three original issued U.S. patents (“2016 action”). On June 15, 2017, Maquet filed a motion for leave to amend its infringement counterclaims to add the first three additional U.S. continuation patents mentioned above and to file various false advertising, unfair competition claims under state law and under the Lanham Act, and a trademark cancellation in the pending case.  Maquet’s amended complaint and counterclaim, like those it originally filed, seek injunctive relief and monetary damages in the form of a reasonable royalty, with three times the amount for alleged willful infringement. The amended complaint admits that Maquet’s current commercially available products do not embody the claims of the asserted patents. On July 21, 2017, the Court granted the motion in part, allowing the three additional continuation patents to be added to the case, but denying addition of the false advertising claims, Lanham Act claims, and the trademark cancellation claims.  On April 24 and 25, 2018, the Court conducted a Markman hearing on claim interpretation. The parties are awaiting the judge’s claim construction order.  Discovery is ongoing. With regard to the first six Maquet patents mentioned above, in March and April 2017, the Company filed requests for inter partes review, (“IPR”), at the U.S. Patent & Trademark Office’s Patent Trial and Appeals Board, (“PTAB’), asserting that the claims are invalid in view of prior art blood pump technology. In September and October 2017, the PTAB denied institution on these IPR requests filed by the Company.  In September 2017, the Company filed additional IPRs and in March and April 2018, the PTAB denied institution of these IPR petitions.

On November 22, 2017, Maquet filed a second lawsuit in D. Mass alleging that the Company’s Impella 2.5, Impella CP, and Impella 5.0 heart pumps infringe certain claims of the fourth additional U.S. continuation patent mentioned above (the seventh patent overall).   In the complaint, Maquet seeks injunctive relief and monetary damages in the form of a reasonable royalty, with three times the amount for alleged willful infringement.  In its answer to Abiomed’s counterclaim, Maquet admits that its current commercially available products do not embody the claims of the asserted patents.  This second action is in its early stages.    

The Company is unable to estimate the potential liability with respect to the legal matters noted above. There are numerous factors that make it difficult to meaningfully estimate possible loss or range of loss at this stage of the legal proceedings, including the significant number of legal and factual issues still to be resolved in the Marquet and Thoratec patent disputes.

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Segment and Enterprise Wide Disclosures

3 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Segment and Enterprise Wide Disclosures

Note 12. Segment and Enterprise Wide Disclosures

The Company operates in one business segment—the research, development and sale of medical devices to assist or replace the pumping function of the failing heart. The Company’s chief operating decision maker (determined to be the Chief Executive Officer) does not manage any part of the Company separately, and the allocation of resources and assessment of performance are based on the Company’s consolidated operating results. International sales (sales outside the U.S., primarily in Europe) accounted for 12% and 10% of total revenue for the three months ended June 30, 2018 and 2017, respectively. The Company’s long-lived assets are located in the U.S. except for $36.5 million and $35.5 million at June 30, 2018 and March 31, 2018, respectively, which are located primarily in Germany.

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Basis of Preparation and Summary of Significant Accounting Policies (Policies)

3 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

New Accounting Pronouncements Adopted

New Accounting Pronouncements Adopted

Effective April 1, 2018, the Company adopted the Financial Accounting Standards Board (“FASB”) standard update ASU 2014-09, “Revenue from Contracts with Customers,” (“Topic 606”) which provides a principles-based, five-step approach to measure and recognize revenue from contracts with customers. The adoption of this guidance did not have a material impact on the Company’s consolidated results of operations, cash flows, and financial position. Additional information and disclosures required by this new standard are contained in “Note 4. Revenue Recognition,” to the Company’s consolidated financial statements.

Effective April 1, 2018, the Company adopted the FASB standard update ASU 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities,” which requires certain financial assets to be measured at fair value with changes in fair value recognized in the statement of operations. The adoption of this guidance did not have a material impact on the Company’s consolidated results of operations, cash flows, and financial position. Additional information and disclosures required by this new standard are contained in “Note 5. Cash Equivalents, Marketable Securities, and Fair Value Measurements,” to the Company’s consolidated financial statements.

On June 20, 2018, the FASB issued ASU 2018-07, “Compensation – Stock Compensation (“Topic 718”): Improvements to Nonemployee Share-Based Payment Accounting,” which simplifies the accounting for share-based payments granted to nonemployees for goods and services. ASU 2018-07 eliminated the previous guidance for accounting for share-based payments to nonemployees and expand Topic 718 to include share-based payments transactions to nonemployees. ASU 2018-07 is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. Early adoption is permitted, but no earlier than an entity’s adoption date of Topic 606. The adoption of ASU 2018-07 requires a modified retrospective transition approach, with a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year. The Company early adopted ASU 2018-07 on June 20, 2018. The adoption of this guidance did not have a material impact on the Company’s consolidated results of operations, cash flows, and financial position.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In February 2016, the FASB issued ASU 2016-02, “Leases.” The new guidance significantly impacts lessee accounting and financial statement disclosures.  Specifically, this guidance requires lessees to identify arrangements that should be accounted for as leases. Under this guidance, for lease arrangements exceeding a one year term, a right-of-use asset and lease obligation is recorded by the lessee for all leases on the balance sheet, whether operating or financing, while the statement of operations includes lease expense for operating leases and amortization and interest expense for financing leases. The balance sheet amount recorded at the date of adoption of this guidance must be calculated using the applicable incremental borrowing rate at the date of adoption. Leases with a term of one year or less will be accounted for similar to existing guidance for operating leases. The Company is currently in the process of evaluating its lessee arrangements to determine the impact of ASU 2016-02 on its consolidated financial statements. This evaluation includes a review of the Company’s existing leasing arrangements on its facilities. The Company currently expects that its lease commitments will be recognized as operating lease liabilities and right-of-use assets upon adoption, which will increase total assets and total liabilities that the Company reports relative to such amounts prior to adoption. ASU 2016-02 must be adopted using a modified retrospective approach for all leases existing at, or entered into after the date of initial adoption, with an option to elect to use certain transition relief.  ASU 2016-02 will become effective for the Company on April 1, 2019.

Adoption of Topic 606, Revenue from Contracts with Customers

Adoption of Topic 606, Revenue from Contracts with Customers

The Company adopted Topic 606 on April 1, 2018, using the modified retrospective method for all contracts not completed as of the date of adoption. The reported results for fiscal year 2019 reflect the application of Topic 606 guidance while the reported results for fiscal year 2018 were prepared under the guidance of ASC 605, “Revenue Recognition.” The adoption of Topic 606 did not have a material impact on the timing or amount of revenue recognized upon adoption and there was no cumulative prior period adjustment recorded to the opening balance of retained earnings upon adoption. Accordingly, the adoption of Topic 606 did not have a material impact on the Company’s consolidated financial position, results of operations, equity or cash flows as of the adoption date or for the three months ended June 30, 2018.

The Company has made the following accounting policy elections and elected to use certain practical expedients, as permitted by the FASB, in applying Topic 606: (1) the Company accounts for amounts collected from customers for sales and other taxes, net of related amounts remitted to tax authorities; (2) the Company does not adjust the promised amount of consideration for the effects of a significant financing component because, at contract inception, the Company expects the period between the time when the Company transfers a promised good or service to the customer and the time when the customer pays for that good or service will be one year or less; (3) the Company expenses costs to obtain a contract as they are incurred if the expected period of benefit, and therefore the amortization period, is one year or less; (4) the Company accounts for shipping and handling activities that occur after control transfers to the customer as a fulfillment cost rather than an additional promised service and these fulfillment costs fall within selling, general and administrative expenses; (5) the Company does not assess whether promised goods or services are performance obligations if they are immaterial in the context of the contract with the customer; and (6) the Company does not disclose the transaction price allocated to unsatisfied performance obligations when the original expected contract duration is one year or less.

The Company generates revenue primarily from the sale of Impella 2.5, Impella CP, Impella 5.0, Impella LD, Impella RP and Impella AIC devices. The Company also generates revenue from preventative maintenance service contracts and maintenance calls.

The Company determines revenue recognition through the following steps:

• Identification of the contract, or contracts, with a customer

• Identification of the performance obligation in the contract

• Determination of the transaction price

• Allocation of the transaction price to the performance obligation in the contract

• Recognition of revenue when, or as, a performance obligation is satisfied

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Net Income Per Share (Tables)

3 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Income Per Share

The Company’s basic and diluted net income per share for the three months ended June 30, 2018 and 2017 were as follows (in thousands, except per share data):

	For the Three Months Ended June 30,
	2018		2017
Basic Net Income Per Share
Net income	$	90,066	$	37,374
Weighted average shares used in computing basic net    income per share		44,546		43,895
Net income per share - basic	$	2.02	$	0.85

	For the Three Months Ended June 30,
	2018		2017
Diluted Net Income Per Share
Net income	$	90,066	$	37,374
Weighted average shares used in computing basic net    income per share		44,546		43,895
Effect of dilutive securities		1,623		1,713
Weighted average shares used in computing diluted    net income per share		46,169		45,608
Net income per share - diluted	$	1.95	$	0.82

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Revenue Recognition (Tables)

3 Months Ended

Jun. 30, 2018

Revenue Recognition And Deferred Revenue [Abstract]

Schedule of Disaggregated Revenue by Major Business Line and Geographical Location

The following table disaggregates the Company’s revenue:

	For the Three Months Ended June 30,
		2018		2017
	(in $000's)
Impella product revenue	$	173,675	$	127,193
Service and other revenue		6,335		5,275
Total revenue	$	180,010	$	132,468

The following table disaggregates the Company’s revenue by geographical location:

	For the Three Months Ended June 30,
		2018		2017
	(in $000's)
U.S. revenue	$	157,595	$	119,665
International revenue		22,415		12,803
Total revenue	$	180,010	$	132,468

Summary of Activity in Each of Product Revenue and Discount Categories

The following table summarizes activity in each of the product revenue rebate and discount categories for the three months ended June 30, 2018 (in thousands):

	Rebates and Discounts
Balance at March 31, 2018	$	1,405
Provision related to current period sales		442
Credits and adjustments made during the period		(396	)
Balance at June 30, 2018	$	1,451

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Cash Equivalents, Marketable Securities and Fair Value Measurements (Tables)

3 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Cash Equivalents and Marketable Securities by Balance Sheet Classification

The Company’s cash equivalents and marketable securities at June 30, 2018 and March 31, 2018 are classified on the balance sheet as follows:

	June 30, 2018		March 31, 2018
	(in $000's)
Cash equivalents	$	29,910	$	22,595
Short-term marketable securities		299,228		319,274
Long-term marketable securities		6,887		37,502
	$	336,025	$	379,371

Cash Equivalents and Marketable Securities

The Company’s cash equivalents and marketable securities at June 30, 2018 and March 31, 2018 are invested in the following:

	Amortized		Gross Unrealized		Gross Unrealized			Fair Market
	Cost		Gains		Losses			Value
	(in $000's)
June 30, 2018:
Money market funds	$	29,910	$	—	$	—		$	29,910
Short-term U.S. Treasury mutual fund securities		23,024		—		(44	)		22,980
Short-term government-backed securities		210,836		—		(463	)		210,373
Short-term corporate debt securities		36,439		—		(97	)		36,342
Short-term commercial paper		29,549		—		(16	)		29,533
Long-term U.S. Treasury mutual fund securities		6,888		—		(1	)		6,887
	$	336,646	$	—	$	(621	)	$	336,025

	Amortized		Gross Unrealized		Gross Unrealized			Fair Market
	Cost		Gains		Losses			Value
	(in $000's)
March 31, 2018:
Money market funds	$	5,845	$	—	$	—		$	5,845
Repurchase agreements		16,750		—		—			16,750
Short-term U.S. Treasury mutual fund securities		18,132		—		(29	)		18,103
Short-term government-backed securities		212,255		3		(538	)		211,720
Short-term corporate debt securities		52,737		—		(161	)		52,576
Short-term commercial paper		36,936		2		(63	)		36,875
Long-term U.S. Treasury mutual fund securities		10,953		—		(16	)		10,937
Long-term government-backed securities		24,798		1		(12	)		24,787
Long-term corporate debt securities		1,777		1		—			1,778
	$	380,183	$	7	$	(819	)	$	379,371

Financial Instruments Recorded at Fair Value

The following table presents the Company’s financial instruments recorded at fair value in the condensed consolidated balance sheets, classified according to the three categories described above:

	Level 1		Level 2		Level 3		Total
June 30, 2018:	(in $000's)
Assets
Money market funds	$	29,910	$	—	$	—	$	29,910
Short-term U.S. Treasury mutual fund securities		—		22,980		—		22,980
Short-term government-backed securities		—		210,373		—		210,373
Short-term corporate debt securities		—		36,342		—		36,342
Short-term commercial paper		—		29,533		—		29,533
Long-term U.S. Treasury mutual fund securities		—		6,887		—		6,887
Liabilities
Contingent consideration		—		—		10,331		10,331

	Level 1		Level 2		Level 3		Total
March 31, 2018:	(in $000's)
Assets
Money market funds	$	5,845	$	—	$	—	$	5,845
Repurchase agreements		—		16,750		—		16,750
Short-term U.S. Treasury mutual fund securities		—		18,103		—		18,103
Short-term government-backed securities		—		211,720		—		211,720
Short-term corporate debt securities		—		52,576		—		52,576
Short-term commercial paper		—		36,875		—		36,875
Long-term U.S. Treasury mutual fund securities		—		10,937		—		10,937
Long-term government-backed securities		—		24,787		—		24,787
Long-term corporate debt securities		—		1,778		—		1,778
Liabilities
Contingent consideration		—		—		10,490		10,490

Valuation Method Used to Calculate Level 3 Liabilities Measured at Estimated Fair Value of Contingent Consideration Related to Acquisition

This liability is reported as Level 3 as the estimated fair value of the contingent consideration related to the acquisition of ECP requires significant management judgment or estimation and is calculated using the following valuation methods:

	Milestone Payment		Fair Value at June 30, 2018 (in $000's)		Valuation Methodology	Significant Unobservable Input	Weighted Average (range, if applicable)
Clinical and regulatory milestone	$	7,000	$	5,712	Probability weighted income approach	Projected fiscal year of milestone payments	2019 to 2022
						Discount rate	3.9% to 4.2%
						Probability of occurrence	Probability adjusted level of 40% for the base case scenario and 10% to 40% for various upside and downside scenarios
Revenue-based milestone		8,000		4,619	Monte Carlo simulation model	Projected fiscal year of milestone payments	2024 to 2035
						Discount rate	14%
						Expected volatility for forecasted revenues	50%
						Probability of payment	78%
	$	15,000	$	10,331

Change in Fair Value of Contingent Consideration as Determined by Level 3 Inputs

The following table summarizes the change in fair value, as determined by Level 3 inputs, of the contingent consideration for the three months ended June 30, 2018 and 2017:

	For the Three Months Ended June 30,
		2018			2017
	(in $000's)
Level 3 liabilities, beginning balance	$	10,490		$	9,153
Additions		—			—
Payments		—			—
Change in fair value		(159	)		265
Level 3 liabilities, ending balance	$	10,331		$	9,418

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Property and Equipment (Tables)

3 Months Ended

Jun. 30, 2018

Property Plant And Equipment [Abstract]

Components of Property and Equipment

The components of property and equipment are as follows:

	June 30, 2018			March 31, 2018
	(in $000's)
Land	$	7,437		$	7,680
Building and building improvements		63,829			63,700
Leasehold improvements		2,183			2,905
Machinery and equipment		47,766			42,787
Furniture and fixtures		8,187			8,104
Construction in progress		27,525			19,850
Total cost		156,927			145,026
Less accumulated depreciation		(29,603	)		(27,859	)
	$	127,324		$	117,167

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Goodwill and In-Process Research and Development (Tables)

3 Months Ended

Jun. 30, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill Activity

The goodwill activity is as follows:

	(in $000's)
Balance at March 31, 2018	$	35,808
Foreign currency translation impact		(1,860	)
Balance at June 30, 2018	$	33,948

Carrying value of In-Process Research and Development

The carrying value of the Company’s IPR&D assets and the change in the balance for the three months ended June 30, 2018 are as follows:

	(in $000's)
Balance at March 31, 2018	$	16,705
Foreign currency translation impact		(868	)
Balance at June 30, 2018	$	15,837

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Accrued Expenses (Tables)

3 Months Ended

Jun. 30, 2018

Payables And Accruals [Abstract]

Accrued Expenses

Accrued expenses consist of the following:

	June 30, 2018		March 31, 2018
	(in $000's)
Employee compensation	$	24,267	$	30,330
Sales and income taxes		4,841		4,562
Research and development		2,373		3,162
Marketing		2,057		2,305
Professional, legal, and accounting fees		1,588		1,870
Warranty		1,086		1,081
Accrued capital expenditures		—		250
Other		2,718		2,587
	$	38,930	$	46,147

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Stock-Based Compensation (Tables)

3 Months Ended

Jun. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation Recognized

The following table summarizes stock-based compensation expense by financial statement line item in the Company’s condensed consolidated statements of operations for the three months ended June 30, 2018 and 2017:

	For the Three Months Ended June 30,
		2018		2017
	(in $000's)
Cost of product revenue	$	575	$	359
Research and development		1,966		1,339
Selling, general and administrative		9,704		6,958
	$	12,245	$	8,656

Summary of Stock Option Activity

The following table summarizes the stock option activity for the three months ended June 30, 2018:

						Weighted
				Weighted		Average		Aggregate
				Average		Remaining		Intrinsic
	Options			Exercise		Contractual		Value
	(in thousands)			Price		Term (years)		(in thousands)
Outstanding at beginning of period		1,282		$	46.18		5.31
Granted		72			383.44
Exercised		(282	)		20.53
Cancelled and expired		(4	)		112.32
Outstanding at end of period		1,068		$	76.20		6.02	$	355,461
Exercisable at end of period		780		$	36.08		5.03	$	290,953
Options vested and expected to vest at end of period		1,048		$	76.12		5.99	$	348,886

Summary of Weighted Average Grant-Date Fair Values And Weighted Average Assumptions Used to Calculate Fair Value of Options Granted

The weighted average grant-date fair values and weighted average assumptions used in the calculation of fair value of options granted during the three months ended June 30, 2018 and 2017 was as follows:

	For the Three Months Ended June 30,
		2018			2017
Weighted average grant-date fair value	$	142.51		$	49.04
Valuation assumptions:
Risk-free interest rate		2.93	%		1.84	%
Expected option life (years)		4.04			4.07
Expected volatility		42.6	%		43.7	%

Summary of Restricted Stock Units Activity

The following table summarizes activity of restricted stock units for the three months ended June 30, 2018:

	Number of Shares			Weighted Average Grant Date Fair Value
	(in thousands)			(per share)
Restricted stock units at beginning of period		880		$	109.01
Granted		183		$	378.88
Vested		(385	)	$	101.74
Forfeited		(7	)	$	145.52
Restricted stock units at end of period		671		$	186.48

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Income Taxes (Tables)

3 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Differences Between Statutory Income Tax Rate and Effective Income Tax Rate

The significant differences between the statutory income tax rate and effective income tax rate for the three months ended June 30, 2018 and 2017 were as follows:

	For the Three Months Ended June 30,
		2018			2017
Statutory income tax rate		21.0		%	35.0		%
Increase resulting from:
Excess tax benefits from stock-based awards		(111.0	)		(49.8	)
Credits		(1.8	)		(1.2	)
State taxes, net		4.3			3.5
Permanent differences		1.6			1.8
Other		0.1			0.1
Effective tax rate		(85.8	)	%	(10.6	)	%

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Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Basic Net Income Per Share
Net income	$ 90,066	$ 37,374
Weighted average shares used in computing basic net income per share	44,546	43,895
Net income per share - basic	$ 2.02	$ 0.85
Diluted Net Income Per Share
Net income	$ 90,066	$ 37,374
Weighted average shares used in computing basic net income per share	44,546	43,895
Effect of dilutive securities	1,623	1,713
Weighted average shares used in computing diluted net income per share	46,169	45,608
Net income per share - diluted	$ 1.95	$ 0.82

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Net Income Per Share - Additional Information (Detail) - shares	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the calculation of diluted weighted average shares outstanding	36,000	54,000
Restricted Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the calculation of diluted weighted average shares outstanding	85,000	80,000

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Revenue Recognition - Additional Information (Detail) - USD ($)		3 Months Ended
	Apr. 01, 2018	Jun. 30, 2018	Mar. 31, 2018
Disaggregation Of Revenue [Line Items]
Contract with customer payment terms, description		Payment terms vary by contract type and type of customer and generally range from 30 to 60 days. The Company’s contracts with customers do not typically include extended payment terms.
Deferred revenue		$ 12,075,000	$ 14,970,000
Deferred Revenue, Revenue Recognized		$ 8,600,000
Minimum
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers, performance obligation term		1 year
Contract with customer payment terms, period		30 days
Maximum
Disaggregation Of Revenue [Line Items]
Contract with customer payment terms, period		60 days
Accounting Standards Update 2014-09
Disaggregation Of Revenue [Line Items]
Cumulative prior period adjustment recorded to opening balance of retained earnings	$ 0

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Revenue Recognition - Schedule of Disaggregated Revenue by Major Business Line (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Disaggregation Of Revenue [Line Items]
Total revenue	$ 180,010	$ 132,468
Impella Product
Disaggregation Of Revenue [Line Items]
Total revenue	173,675	127,193
Service and Other
Disaggregation Of Revenue [Line Items]
Total revenue	$ 6,335	$ 5,275

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Revenue Recognition - Schedule of Disaggregated Revenue by Major Geographical Location (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Disaggregation Of Revenue [Line Items]
Total revenue	$ 180,010	$ 132,468
U.S.
Disaggregation Of Revenue [Line Items]
Total revenue	157,595	119,665
International
Disaggregation Of Revenue [Line Items]
Total revenue	$ 22,415	$ 12,803

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Revenue Recognition - Summary of Activity in Each of Product Revenue and Discount Categories (Detail) $ in Thousands	3 Months Ended
	Jun. 30, 2018 USD ($)
Revenue Recognition And Deferred Revenue [Abstract]
Balance at March 31, 2018	$ 1,405
Provision related to current period sales	442
Credits and adjustments made during the period	(396)
Balance at June 30, 2018	$ 1,451

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Cash Equivalents and Marketable Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Cash equivalents	$ 29,910	$ 22,595
Short-term marketable securities	299,228	319,274
Long-term marketable securities	6,887	37,502
Available-for-sale securities, fair value disclosure	$ 336,025	$ 379,371

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Investable Cash Equivalents and Marketable Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	$ 336,646	$ 380,183
Gross Unrealized Gains		7
Gross Unrealized Losses	(621)	(819)
Fair Market Value	336,025	379,371
Repurchase Agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost		16,750
Fair Market Value		16,750
Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	29,910	5,845
Fair Market Value	29,910	5,845
Commercial Paper | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	29,549	36,936
Gross Unrealized Gains		2
Gross Unrealized Losses	(16)	(63)
Fair Market Value	29,533	36,875
U.S. Treasury mutual fund securities | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	23,024	18,132
Gross Unrealized Losses	(44)	(29)
Fair Market Value	22,980	18,103
U.S. Treasury mutual fund securities | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	6,888	10,953
Gross Unrealized Losses	(1)	(16)
Fair Market Value	6,887	10,937
Government-backed securities | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	210,836	212,255
Gross Unrealized Gains		3
Gross Unrealized Losses	(463)	(538)
Fair Market Value	210,373	211,720
Government-backed securities | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost		24,798
Gross Unrealized Gains		1
Gross Unrealized Losses		(12)
Fair Market Value		24,787
Corporate Debt Securities | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	36,439	52,737
Gross Unrealized Losses	(97)	(161)
Fair Market Value	$ 36,342	52,576
Corporate Debt Securities | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost		1,777
Gross Unrealized Gains		1
Fair Market Value		$ 1,778

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Financial Instruments Recorded at Fair Value (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	$ 336,025	$ 379,371
Contingent consideration	10,331	10,490
Repurchase Agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure		16,750
Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	29,910	5,845
Commercial Paper | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	29,533	36,875
Level 1 | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	29,910	5,845
Level 2 | Repurchase Agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure		16,750
Level 2 | Commercial Paper | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	29,533	36,875
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	10,331	10,490
U.S. Treasury mutual fund securities | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	22,980	18,103
U.S. Treasury mutual fund securities | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	6,887	10,937
U.S. Treasury mutual fund securities | Level 2 | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	22,980	18,103
U.S. Treasury mutual fund securities | Level 2 | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	6,887	10,937
Government-backed securities | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	210,373	211,720
Government-backed securities | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure		24,787
Government-backed securities | Level 2 | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	210,373	211,720
Government-backed securities | Level 2 | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure		24,787
Corporate Debt Securities | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	36,342	52,576
Corporate Debt Securities | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure		1,778
Corporate Debt Securities | Level 2 | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	$ 36,342	52,576
Corporate Debt Securities | Level 2 | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure		$ 1,778

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Cash Equivalents, Marketable Securities and Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended
	Aug. 01, 2018	Jul. 31, 2014	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate carrying amount of portfolio of other investments			$ 13,800		$ 12,600
Investments in private medical device company			$ 1,166	$ 400
Subsequent Event
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in private medical device company	$ 5,800
ECP Entwicklungsgesellschaft mbH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payments to acquire businesses, cash paid		$ 13,000
Potential payouts payments		$ 15,000

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Valuation Method Used to Calculate Level 3 Liabilities Measured at Estimated Fair Value of Contingent Consideration Related to Acquisition (Detail) $ in Thousands	3 Months Ended
	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration	$ 10,331	$ 10,490
ECP Entwicklungsgesellschaft mbH | Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Alternative investment, measurement input	21
Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration	$ 10,331	$ 10,490
Level 3 | ECP Entwicklungsgesellschaft mbH
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Milestone Payment	15,000
Contingent consideration	10,331
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Milestone Payment	7,000
Contingent consideration	$ 5,712
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone | Base Case Scenario | Contingent Consideration
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Probability of occurrence	40.00%
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone | Minimum | Contingent Consideration
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Projected fiscal year of milestone payments	2019
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone | Minimum | Various Upside and Downside Scenarios | Contingent Consideration
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Probability of occurrence	10.00%
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone | Maximum | Contingent Consideration
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Projected fiscal year of milestone payments	2022
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone | Maximum | Various Upside and Downside Scenarios | Contingent Consideration
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Probability of occurrence	40.00%
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone | Discount Rate | Minimum | Contingent Consideration
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Alternative investment, measurement input	3.9
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone | Discount Rate | Maximum | Contingent Consideration
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Alternative investment, measurement input	4.2
Level 3 | ECP Entwicklungsgesellschaft mbH | Monte Carlo simulation model | Revenue-based milestone
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Milestone Payment	$ 8,000
Contingent consideration	$ 4,619
Level 3 | ECP Entwicklungsgesellschaft mbH | Monte Carlo simulation model | Revenue-based milestone | Contingent Consideration
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Probability of payment	78.00%
Level 3 | ECP Entwicklungsgesellschaft mbH | Monte Carlo simulation model | Revenue-based milestone | Minimum | Contingent Consideration
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Projected fiscal year of milestone payments	2024
Level 3 | ECP Entwicklungsgesellschaft mbH | Monte Carlo simulation model | Revenue-based milestone | Maximum | Contingent Consideration
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Projected fiscal year of milestone payments	2035
Level 3 | ECP Entwicklungsgesellschaft mbH | Monte Carlo simulation model | Revenue-based milestone | Discount Rate | Contingent Consideration
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Alternative investment, measurement input	14
Level 3 | ECP Entwicklungsgesellschaft mbH | Monte Carlo simulation model | Revenue-based milestone | Expected Volatility for Forecasted Revenues | Contingent Consideration
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Alternative investment, measurement input	50

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Change in Fair Value of Contingent Consideration as Determined by Level 3 Inputs (Detail) - Contingent Consideration - ECP Entwicklungsgesellschaft mbH - Level 3 - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Level 3 liabilities, beginning balance	$ 10,490	$ 9,153
Additions	0	0
Payments	0	0
Change in fair value	(159)	265
Level 3 liabilities, ending balance	$ 10,331	$ 9,418

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Components of Property and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Property Plant And Equipment [Abstract]
Land	$ 7,437	$ 7,680
Building and building improvements	63,829	63,700
Leasehold improvements	2,183	2,905
Machinery and equipment	47,766	42,787
Furniture and fixtures	8,187	8,104
Construction in progress	27,525	19,850
Total cost	156,927	145,026
Less accumulated depreciation	(29,603)	(27,859)
Property and equipment, net	$ 127,324	$ 117,167

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Goodwill and In-Process Research and Development - Additional Information (Detail)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)
Goodwill [Line Items]
Goodwill	$ 33,948,000	$ 35,808,000
Accumulated impairment loss, goodwill	0
In-process research and development	15,837,000	16,705,000
ECP Entwicklungsgesellschaft mbH
Goodwill [Line Items]
In-process research and development	$ 15,800,000	$ 16,700,000
ECP Entwicklungsgesellschaft mbH | Discount Rate
Goodwill [Line Items]
Fair value measurement inputs	21

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Goodwill Activity (Detail) $ in Thousands	3 Months Ended
	Jun. 30, 2018 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning balance	$ 35,808
Foreign currency translation impact	(1,860)
Ending balance	$ 33,948

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Carrying value of In-Process Research and Development (Detail) $ in Thousands	3 Months Ended
	Jun. 30, 2018 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning balance	$ 16,705
Foreign currency translation impact	(868)
Ending balance	$ 15,837

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Accrued Expenses (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Payables and Accruals [Abstract]
Employee compensation	$ 24,267	$ 30,330
Sales and income taxes	4,841	4,562
Research and development	2,373	3,162
Marketing	2,057	2,305
Professional, legal, and accounting fees	1,588	1,870
Warranty	1,086	1,081
Accrued capital expenditures		250
Other	2,718	2,587
Accrued expenses	$ 38,930	$ 46,147

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Stock-Based Compensation Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 12,245	$ 8,656
Cost of product revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	575	359
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	1,966	1,339
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 9,704	$ 6,958

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Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Options
Outstanding at beginning of period	1,282
Granted	72
Exercised	(282)
Cancelled and expired	(4)
Outstanding at end of period	1,068	1,282
Exercisable at end of period	780
Options vested and expected to vest at end of period	1,048
Weighted Average Exercise Price
Outstanding at beginning of period	$ 46.18
Granted	383.44
Exercised	20.53
Cancelled and expired	112.32
Outstanding at end of period	76.20	$ 46.18
Exercisable at end of period	36.08
Options vested and expected to vest at end of period	$ 76.12
Weighted Average Remaining Contractual Term (years)
Outstanding	6 years 7 days	5 years 3 months 21 days
Exercisable at end of period	5 years 10 days
Options vested and expected to vest at end of period	5 years 11 months 26 days
Aggregate Intrinsic Value
Outstanding at end of period	$ 355,461
Exercisable at end of period	290,953
Options vested and expected to vest at end of period	$ 348,886

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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended
	May 31, 2018	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Aggregate intrinsic value of options exercised in period		$ 106,700
Proceeds from the exercise of stock options		5,798	$ 3,555
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense		$ 18,000
Unrecognized stock-based compensation expense, estimated weighted-average recognition period		2 years 6 months
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Unrecognized stock-based compensation expense		$ 79,500
Unrecognized stock-based compensation expense, estimated weighted-average recognition period		2 years 4 months 24 days
Weighted average grant-date fair value		$ 378.88
Fair value of units vested		$ 156,100
Restricted share unit issued		183,000
Performance Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted share unit issued	114,000

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Summary of Weighted Average Grant-Date Fair Values And Weighted Average Assumptions Used to Calculate Fair Value of Options Granted (Detail) - Stock Options - $ / shares	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant-date fair value	$ 142.51	$ 49.04
Valuation assumptions:
Risk-free interest rate	2.93%	1.84%
Expected option life (years)	4 years 14 days	4 years 25 days
Expected volatility	42.60%	43.70%

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Summary of Restricted Stock Units Activity (Detail) - Restricted Stock Units shares in Thousands	3 Months Ended
	Jun. 30, 2018 $ / shares shares
Number of Shares
Beginning Balance | shares	880
Granted | shares	183
Vested | shares	(385)
Forfeited | shares	(7)
Ending Balance | shares	671
Weighted Average Grant Date Fair Value
Beginning Balance | $ / shares	$ 109.01
Granted | $ / shares	378.88
Vested | $ / shares	101.74
Forfeited | $ / shares	145.52
Ending Balance | $ / shares	$ 186.48

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Income Taxes - Additional Information (Detail) - USD ($)		1 Months Ended	3 Months Ended
	Dec. 22, 2017	Dec. 31, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
U.S. federal statutory corporate tax rate		35.00%	21.00%	35.00%
Income tax benefit			$ (41,579,000)	$ (3,582,000)
Effective income tax rate			(85.80%)	(10.60%)
Measurement period	1 year
Income tax expense			$ 0
Excess tax benefits from stock-based awards			$ 53,800,000	$ 16,800,000
Potential repatriation of foreign subsidiary earnings			100.00%

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Differences Between Statutory Income Tax Rate and Effective Income Tax Rate (Detail)	1 Months Ended	3 Months Ended
	Dec. 31, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Statutory income tax rate	35.00%	21.00%	35.00%
Excess tax benefits from stock-based awards		(111.00%)	(49.80%)
Credits		(1.80%)	(1.20%)
State taxes, net		4.30%	3.50%
Permanent differences		1.60%	1.80%
Other		0.10%	0.10%
Effective tax rate		(85.80%)	(10.60%)

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Commitments and Contingencies - Additional Information (Detail) $ in Millions		1 Months Ended						3 Months Ended
	Dec. 31, 2017 ft²	Jul. 31, 2018 ft²	Feb. 28, 2017 ft²	Oct. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	May 31, 2016	Sep. 30, 2015 Patent	Jun. 30, 2018 USD ($) ft²	Mar. 31, 2018 ft²
Magnetic Clutch Patents
Commitments and Contingencies [Line Items]
Patents allegedly infringed upon, number | Patent							2
European Pigtail Patent
Commitments and Contingencies [Line Items]
Patents allegedly infringed upon, number | Patent							1
German Pigtail Patent
Commitments and Contingencies [Line Items]
Patents allegedly infringed upon, number | Patent							1
Patent One
Commitments and Contingencies [Line Items]
Patent expiration period						2020-09
Patent Two
Commitments and Contingencies [Line Items]
Patent expiration period						2020-12
Patent Three
Commitments and Contingencies [Line Items]
Patent expiration period						2021-10
Lease Agreements | Massachusetts
Commitments and Contingencies [Line Items]
Annual rent expense | $								$ 0.9
Lease expiration date	Aug. 31, 2025		Jul. 31, 2022
Additional office space | ft²	6,607		21,603						11,269
Total office space | ft²								63,343
Lease Agreements | Germany
Commitments and Contingencies [Line Items]
Annual rent expense | $					$ 0.3
Lease commencement period					2017-05
Lease expiration period					2024-05
Lease Agreements | Japan
Commitments and Contingencies [Line Items]
Annual rent expense | $				$ 0.9
Lease expiration period				2021-09
Lease Agreements | Subsequent Event | Massachusetts
Commitments and Contingencies [Line Items]
Lease expiration date		Sep. 30, 2027
Additional office space | ft²		23,864

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Segment and Enterprise Wide Disclosures - Additional Information (Detail) $ in Millions	3 Months Ended
	Jun. 30, 2018 USD ($) Segment	Jun. 30, 2017	Mar. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of business segments | Segment	1
International
Segment Reporting Information [Line Items]
Long-lived assets | $	$ 36.5		$ 35.5
Customer Concentration Risk | Total Revenues | International
Segment Reporting Information [Line Items]
Percentage of revenue accounted	12.00%	10.00%