Mo Qatanani - 16 Sep 2025 Form 4 Insider Report for Scholar Rock Holding Corp (SRRK)

Role: CHIEF SCIENTIFIC OFFICER
Signature: /s/ Junlin Ho, Attorney-in-Fact for Mo Qatanani
Issuer symbol: SRRK
Transactions as of: 16 Sep 2025
Net transactions value: -$106,527
Form type: 4
Filing time: 17 Sep 2025, 16:30:07 UTC
Previous filing: 10 Jul 2025
Next filing: 24 Sep 2025
SEC: View on sec.gov

Quoteable Key Fact

"Mo Qatanani filed Form 4 for Scholar Rock Holding Corp (SRRK) on 17 Sep 2025."

Quick Takeaways

This page summarizes Mo Qatanani's Form 4 filing for Scholar Rock Holding Corp (SRRK).
1 reported transaction and 0 derivative rows are listed below.
Filing timestamp: 17 Sep 2025, 16:30.

What Changed

Previous filing in this sequence was filed on 10 Jul 2025.
Current net transaction value: -$106,527.

Why This Matters

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Official SEC Source

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

See Original Filing

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Qatanani Mo	CHIEF SCIENTIFIC OFFICER	301 BINNEY STREET, CAMBRIDGE	/s/ Junlin Ho, Attorney-in-Fact for Mo Qatanani	17 Sep 2025	0001980298

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SRRK	Common Stock	Sale	$106,527	-3,178	-2.8%	$33.52	112,317	16 Sep 2025	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the number of shares required to be sold by the reporting person to cover the tax withholding obligation in connection with the vesting of restricted stock units ("RSU") on September 15, 2025. This sale is mandated by the Issuer's election under its equity incentive plans to require the reporting person to fund this tax withholding obligation by completing a "sell to cover" transaction with a brokerage firm designated by the Issuer. This sale does not represent a discretionary trade by the reporting person. The shares vested pursuant to awards that were granted on October 26, 2021 and October 10, 2022. Each RSU represents the contingent right to receive upon vesting of the RSU, one share of the Issuer's common stock. The shares subject to these RSU awards vest annually over four years, subject to a continued service relationship with the Issuer on the applicable vesting date.
F2	Consists of 3,353 shares of common stock and 108,964 RSUs.

Content

Represents the number of shares required to be sold by the reporting person to cover the tax withholding obligation in connection with the vesting of restricted stock units ("RSU") on September 15, 2025. This sale is mandated by the Issuer's election under its equity incentive plans to require the reporting person to fund this tax withholding obligation by completing a "sell to cover" transaction with a brokerage firm designated by the Issuer. This sale does not represent a discretionary trade by the reporting person. The shares vested pursuant to awards that were granted on October 26, 2021 and October 10, 2022. Each RSU represents the contingent right to receive upon vesting of the RSU, one share of the Issuer's common stock. The shares subject to these RSU awards vest annually over four years, subject to a continued service relationship with the Issuer on the applicable vesting date.

Consists of 3,353 shares of common stock and 108,964 RSUs.