Hallal David reported acquisition or exercise transactions in this Form 4 filing.
Scholar Rock Holding Corp reported that Chief Executive Officer and director David Hallal received a grant of 128,004 restricted stock units (RSUs) of common stock on February 9, 2026 at a price of $0.00 per share. These RSUs vest in four annual installments, starting on January 15, 2027, subject to his continued service.
Following this award, Hallal beneficially owns 1,669,649 shares of common stock directly, consisting of shares and both time-based and performance-based RSUs. In addition, 205,000 shares are held indirectly by the Hallal Family Irrevocable Trust, where his spouse is a trustee and he disclaims beneficial ownership beyond his pecuniary interest.
Woods Keith reported acquisition or exercise transactions in this Form 4 filing.
Scholar Rock Holding Corp’s Chief Operating Officer Keith Woods was awarded 47,021 shares of common stock in the form of restricted stock units on February 9, 2026 at a grant price of $0.00. These RSUs vest in four equal annual installments starting January 15, 2027, as long as he remains in service.
After this award, Woods beneficially owns 630,275 equity interests, consisting of 33,254 shares of common stock, 147,021 time-based RSUs, and 450,000 RSUs subject to both performance and time-based vesting conditions.
Wellington Management Group and affiliated entities filed a Schedule 13G reporting a passive ownership stake in Scholar Rock Holding Corporation common stock. They report beneficial ownership of 5,759,428 shares, representing 5.65% of the outstanding common stock as of 12/31/2025.
The Wellington entities report no sole voting or dispositive power, but significant shared voting and dispositive power across the group, with Wellington Management Company LLP holding shared voting power over 4,973,254 shares. The filing states the position is held in the ordinary course of business and not for the purpose of changing or influencing control of Scholar Rock.
Scholar Rock Holding Corp saw a large warrant exercise by a 10% owner–affiliated group. On December 11, 2025, a warrant to buy 1,575,008 shares of common stock at $7.35 per share was exercised, eliminating the warrant position.
Following the transaction, entities associated with Invus Global Management, LLC, Siren, L.L.C. and related investment vehicles held 10,825,013 shares of Scholar Rock common stock directly. The filing notes a chain of control from Invus Public Equities, L.P. up through Invus Global Management, Siren, and ultimately to Mr. Raymond Debbane, with standard disclaimers of beneficial ownership among the reporting persons.
Scholar Rock Holding Corp’s chief scientific officer, Mo Qatanani, reported two stock sales on January 22, 2026 under a pre-arranged Rule 10b5-1 trading plan adopted on March 31, 2025. He sold 2,119 shares of common stock at a weighted average price of $45.8655 and another 12,779 shares at a weighted average price of $46.8541, with each sale executed through multiple trades within the stated price ranges. After these transactions, his reported beneficial holdings consist of 85,660 restricted stock units (RSUs), and the earlier figure of 98,439 beneficially owned securities reflected 12,779 shares plus these RSUs before the second sale.
Scholar Rock Holding Corp. filed a Form 144 notice for a planned sale of 14,898 shares of its common stock. The shares are to be sold through J.P. Morgan Securities LLC on Nasdaq, with an aggregate market value of 686,053. The securities were acquired on 01/15/2026 as a restricted stock award from the issuer, with the same date listed for payment and the nature of payment noted as “NA.”
The filing notes that 102,007,457 shares of common stock were outstanding, providing context for the planned sale. It also discloses that a seller named Mohammed Qatanani sold 136,462 common shares for gross proceeds of 6,169,788 on 12/04/2025, and 13,112 common shares for 592,611 on 01/14/2026, over the prior three months.
Scholar Rock Holding Corp's chief scientific officer, Mo Qatanani, reported an automatic sale of company stock related to equity compensation. On January 16, 2026, Qatanani sold 8,406 shares of common stock at an average price of $44.4777 per share. According to the footnotes, this was a mandatory "sell to cover" transaction to satisfy tax withholding obligations arising from the vesting of restricted stock units on January 15, 2026, rather than a discretionary trade.
After this transaction, Qatanani beneficially owned a total of 100,558 equity-based units, consisting of 14,898 shares of common stock and 85,660 restricted stock units that are fully vested.
Scholar Rock Holding Corp’s Chief Human Resources Officer, Caryn Parlavecchio, reported a required tax-related sale of company stock. On January 16, 2026, she sold 6,600 shares of common stock at an average price of $44.4777 per share to cover tax withholding triggered by the vesting of restricted stock units on January 15, 2026. The filing notes this was a mandatory “sell to cover” transaction under the company’s equity incentive plans, not a discretionary trade. After the sale, she beneficially owned 148,864 equity interests, consisting of 78,283 shares of common stock and 70,581 RSUs.
Scholar Rock Holding Corp’s chief medical officer, Jing L. Marantz, sold 5,798 shares of common stock on January 16, 2026 at $44.4777 per share. The filing explains this sale was required to cover tax withholding from the vesting of restricted stock units (RSUs) on January 15, 2026 under the company’s equity incentive plans, and it was not a discretionary trade.
These shares relate to RSU awards granted on February 12, 2024. After the tax-related sale, Marantz beneficially owns 95,687 shares, consisting of 24,974 shares of common stock and 70,713 RSUs. Each RSU is fully vested and represents the right to receive one share of Scholar Rock common stock.
Scholar Rock Holding Corp’s general counsel, Junlin Ho, reported a small insider stock sale tied to restricted stock unit (RSU) vesting. On January 16, 2026, Ho sold 8,016 shares of common stock at an average price of $44.4777 per share.
According to the filing, this sale was mandated under the company’s equity incentive plans solely to cover tax withholding obligations from RSUs that vested on January 15, 2026, and did not represent a discretionary trade. After the transaction, Ho beneficially owned 214,553 equity-linked interests, consisting of 121,471 shares of common stock and 93,082 RSUs, all tied to fully vested awards.