Mo Qatanani - 14 Jan 2026 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
14 Jan 2026
Net transactions value
-$349,650
Form type
4
Filing time
16 Jan 2026, 18:37:18 UTC
Previous filing
05 Dec 2025
Next filing
21 Jan 2026
SEC
View on sec.gov

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 16 Jan 2026 0001980298

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SRRK Common Stock Options Exercise $25,439 +1,407 +1.3% $18.08 110,371 14 Jan 2026 Direct F1, F2
transaction SRRK Common Stock Options Exercise $2,446 +321 +0.29% $7.62 110,692 14 Jan 2026 Direct F1, F3
transaction SRRK Common Stock Options Exercise $28,130 +2,813 +2.5% $10.00 113,505 14 Jan 2026 Direct F1, F4
transaction SRRK Common Stock Options Exercise $92,815 +5,893 +5.2% $15.75 119,398 14 Jan 2026 Direct F1, F5
transaction SRRK Common Stock Options Exercise $94,132 +2,678 +2.2% $35.15 122,076 14 Jan 2026 Direct F1, F6
transaction SRRK Common Stock Sale $592,611 -13,112 -11% $45.20 108,964 14 Jan 2026 Direct F1, F7, F8

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction SRRK Stock Option (Right to Buy) Options Exercise $0 -1,407 -100% $0.000000 0 14 Jan 2026 Common Stock 1,407 $18.08 Direct F1, F9
transaction SRRK Stock Option (Right to Buy) Options Exercise $0 -321 -25% $0.000000 961 14 Jan 2026 Common Stock 321 $7.62 Direct F1, F10
transaction SRRK Stock Option (Right to Buy) Options Exercise $0 -2,813 -20% $0.000000 11,250 14 Jan 2026 Common Stock 2,813 $10.00 Direct F1, F11
transaction SRRK Stock Option (Right to Buy) Options Exercise $0 -5,893 -11% $0.000000 47,143 14 Jan 2026 Common Stock 5,893 $15.75 Direct F1, F12
transaction SRRK Stock Option (Right to Buy) Options Exercise $0 -2,678 -7.7% $0.000000 32,142 14 Jan 2026 Common Stock 2,678 $35.15 Direct F1, F13
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 This transaction was effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2025.
F2 Consists of 1,407 shares of common stock and 108,964 RSUs.
F3 Consists of 1,728 shares of common stock and 108,964 RSUs.
F4 Consists of 4,541 shares of common stock and 108,964 RSUs.
F5 Consists of 10,434 shares of common stock and 108,964 RSUs.
F6 Consists of 13,112 shares of common stock and 108,964 RSUs.
F7 The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $45.00 to $45.45, inclusive. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.
F8 Consists of 108,964 RSUs.
F9 No shares remain unvested under this stock option.
F10 961 shares remain unvested under this stock option. The first vesting event occurred on January 5, 2023 and the remainder vests in fifteen quarterly installments thereafter; provided the reporting person continues to have a service relationship with the Issuer on such vesting date.
F11 11,250 shares remain unvested under this stock option. The first vesting event occurred on April 1, 2023 and the remainder vests in fifteen quarterly installments thereafter; provided the reporting person continues to have a service relationship with the Issuer on such vesting date.
F12 47,143 shares remain unvested under this stock option. The first vesting event occurred on April 1, 2024 and the remainder vests in fifteen quarterly installments thereafter; provided the reporting person continues to have a service relationship with the Issuer on such vesting date.
F13 32,142 shares remain unvested under this stock option. The first vesting event occurred on April 1, 2025 and the remainder vests in fifteen quarterly installments thereafter; provided the reporting person continues to have a service relationship with the Issuer on such vesting date.