On August 7, 2024 (the “Closing Date”), the Company entered into a Financing Agreement with the guarantors party thereto, the lenders party thereto (the “Lenders”), and Sixth Street Lending Partners (“Sixth Street”), as the administrative agent and collateral agent for the Lenders (the “Financing Agreement”). The Financing Agreement establishes a senior secured term loan facility of $500.0 million (the “Credit Facility”), consisting of $400.0 million funded on the Closing Date and an additional $100.0 million available at the Company’s option, subject to mutual agreement with Sixth Street. The loans under the Credit Facility bear interest at an annual rate of 15.0%, which is paid in kind and added to the outstanding principal balance of the Credit Facility each period. The outstanding principal balance of this Credit Facility, including amounts representing accrued but unpaid interest previously paid in kind, is due and payable on August 7, 2031.

The Company will have the right to prepay loans under the Credit Facility at any time. The Company is required to partially repay loans under the Credit Facility with proceeds from certain asset sales, condemnation events and extraordinary receipts, subject, in some cases, to reinvestment rights. If the Company repays in full the aggregate principal outstanding under the Credit Facility and such payment in full occurs on or prior to August 7, 2028, the Company will be required to make an additional payment to the lenders under the Credit Facility on such date in an amount necessary for the lenders to achieve a two times multiple of invested capital (“MOIC”) of the aggregate principal amount funded on the Closing Date (the “MOIC Payment”). If such payment in full occurs after August 7, 2028, the Company will be required to make a payment to the lenders under the Credit Facility on such date in an amount necessary for the lenders to achieve the greater of the MOIC Payment and the present value of all interest payments that would have been payable from such date through the maturity date of the Credit Facility discounted at the Treasury Rate (as defined in the Financing Agreement) plus 0.5%; provided that such payment amount in this instance will not exceed the amount necessary for the lenders to achieve a 2.5 times MOIC.

On November 26, 2024, the Company entered into an amendment to the Financing Agreement (the "Amendment") to modify, amongst other things, some of the prepayment terms of the loans under the Credit Facility, including, the prepayment terms related to the Sarepta Collaboration Agreement. The Amendment was effective on February 14, 2025, following the closing of the Sarepta Collaboration Agreement and receipt of the $500.0 million upfront payment from Sarepta. The Amendment added an additional prepayment clause that requires certain contractual prepayments of principal and MOIC payments throughout the life of the loans under the Credit Facility. Additionally, any prepayment will be split with 50% of any such prepayment paying down the principal balance of the loans under the Credit Facility and the other 50% being applied to prepay the MOIC Payment. In the event the prepayment amounts result in fees being prepaid in excess of the actual amounts required to be paid, the excess fees shall be reallocated and applied to reduce the amount of the principal balance upon repayment in full of the loans under the Credit Facility. As of June 30, 2026, the Company has paid $158.9 million in MOIC payments of which $33.3 million is expected to be applied to principal upon repayment in full. To date, the Company has paid $319.5 million of the loans under the Credit Facility.

All obligations under the Financing Agreement are secured on a first-priority basis by security interests in substantially all assets of the Company and material subsidiaries of the Company, including its intellectual property, subject to certain exceptions, and is guaranteed by material subsidiaries of the Company, including foreign subsidiaries, subject to certain exceptions.

The Financing Agreement contains customary covenants, including, without limitation, a financial covenant to maintain liquidity (cash, cash equivalents and investments) of at least $250.0 million if the Company’s market capitalization is above $2.0 billion, and negative covenants that, subject to certain exceptions, restrict indebtedness, liens,

investments (including acquisitions), fundamental changes, asset sales and licensing transactions, dividends, modifications to material agreements, payment of subordinated indebtedness, distributions from certain parties, and other matters customarily restricted in such agreements. As of June 30, 2026, the Company was in compliance with all covenants under the Financing Agreement. Pursuant to the terms of the Financing Agreement, the Company and its subsidiaries are not permitted to have an aggregate principal amount of convertible indebtedness outstanding at any one time in excess of the greater of $300.0 million and 10% of the market capitalization of the Company (based on the closing price of the common stock of the Company on the trading date immediately prior to the incurrence of such indebtedness), but in no event greater than $700.0 million in the aggregate. The Company is subject to restrictions on sales and licensing transactions with respect to certain core intellectual property, subject to certain exceptions, including certain transactions related to areas outside the United States, United Kingdom, European Union, Japan and China.


	June 30, 2026		September 30, 2025
	(in thousands)
Initial Term Loan	$	400,000	$	400,000
Accumulated interest on the Initial Term Loan	106,205		66,942
Accumulated accretion of the MOIC Payment	7,455		3,478
Less: Unamortized debt issuance costs	(12,778)		(13,912)
Less: Current portion of credit facility	(40,000)		(40,000)
Less: Payments	(319,516)		(201,625)
Credit facility, net of current portion	$	141,366	$	214,883


	Three Months Ended June 30,				Nine Months Ended June 30,
	2026		2025		2026		2025
	(in thousands)
Amortization of debt issuance costs	$	385	$	420	$	1,133	$	1,533
Accretion of the MOIC Payment	1,515		2,218		3,977		2,787
Contractual interest expense	13,212		13,766		39,264		44,454
Total interest expense	$	15,112	$	16,404	$	44,374	$	48,774

The amounts shown in the table below, related to the Credit Facility, represent the expected repayments of principal and accrued interest balance as of June 30, 2026 inclusive of scheduled mandatory prepayments that the Company is obligated to make to the Lenders during the indicated periods. The principal balance will increase from accrued paid in kind interest, and the table does not include MOIC prepayments beyond those contractually scheduled. Actual payments on current principal may vary from the amounts presented in the table.

In January 2026, the Company issued 700.0 million aggregate principal amount of 0.00% Convertible Notes (the “Notes”) due January 15, 2032. The initial conversion rate is 11.4844 shares of common stock per $1,000 principal amount of Notes, which represents an initial conversion price of approximately $87.07 per share, subject to adjustment upon the occurrence of certain specified events. The Notes are convertible into an aggregate of approximately 8,039,080 shares of the Company’s common stock. The conversion rate is subject to adjustment, including in the case of conversions in connection with a make-whole fundamental change as defined in the indenture for the Notes or a redemption of the Notes.

The Notes are convertible at the option of the holders upon the occurrence of certain events prior to October 15, 2031, and thereafter at any time until the close of business on the second scheduled trading day immediately preceding the maturity date. Prior to October 15, 2031, holders may convert the Notes only upon the occurrence of one of the following circumstances: (i) during any calendar quarter commencing after the calendar quarter ending March 31, 2026, if the last reported sale price of the Company’s common stock exceeds 130% of the conversion price for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading‑day period ending on, and including, the last trading day of the immediately preceding calendar quarter; (ii) during the five business days immediately following any ten consecutive trading‑day period in which the trading price per $1,000 principal amount of the Notes for each trading day of such ten consecutive trading-day period is less than 98% of the product of the last reported sale price of the Company’s common stock and the applicable conversion rate on such trading day; (iii) upon the occurrence of certain specified corporate events or distributions on the common stock; or (iv) if the Company calls the Notes for redemption. Upon conversion, the Company may, at its election, settle the Notes in cash, shares of the Company’s common stock, or a combination thereof.

The Company may not redeem the Notes prior to January 16, 2029. On or after January 16, 2029 and on or before the 30th scheduled trading day immediately preceding the maturity date, the Company may redeem for cash all or any portion of the Notes, at its option, if the last reported sale price of the Company’s common stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading‑day period ending on, and including, the trading day immediately preceding the date on which the Company provides notice of redemption. The redemption price will equal 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid special interest, if any, to, but excluding, the redemption date.

Upon the occurrence of a fundamental change, which includes certain change-of-control transactions, a delisting of the Company’s common stock, or a liquidation event, holders may require the Company to repurchase their Notes for cash at a price equal to 100% of the principal amount of the Notes, plus accrued and unpaid interest, if any, to, but excluding, the repurchase date.

initial conversion price of the Notes and an initial cap price of $119.33 per share, subject to adjustment under the terms of the Capped Call confirmations. The Capped Calls are intended to reduce or offset potential dilution to the Company’s common stock upon conversion of the Notes, with such reduction or offset subject to the applicable cap price. The Capped Calls cover, subject to anti‑dilution adjustments, the number of shares of the Company’s common stock underlying the Notes.

The Capped Calls are separate transactions that are not part of the terms of the Notes and do not affect the rights of holders of the Notes. The Company paid $47.9 million in connection with the Capped Call transactions, which was recorded as a reduction to additional paid‑in capital in the consolidated balance sheets. As the Capped Calls meet the applicable equity classification criteria under ASC 815, Derivatives and Hedging, they are recorded within stockholders’ equity and are not subsequently remeasured to fair value.