Key facts
- This page summarizes Mo Qatanani's Form 4 filing for Scholar Rock Holding Corp (SRRK).
- 11 reported transactions and 5 derivative rows are listed below.
- Accepted by SEC: 16 Jan 2026, 18:37.
Mo Qatanani - 14 Jan 2026 Form 4 Insider Report for Scholar Rock Holding Corp (SRRK)
- Reporting relationship
- CHIEF SCIENTIFIC OFFICER
- Issuer ticker
- SRRK
- Reported as of
- 14 Jan 2026
- Net transaction value
- -$349,650
- SEC form
- 4
- Accepted by SEC
- 16 Jan 2026, 18:37:18 UTC
- Prior SEC filing
- 05 Dec 2025
- Next SEC filing
- 21 Jan 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Junlin Ho, Attorney-in-Fact for Mo Qatanani
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Mo Qatanani filed Form 4 for Scholar Rock Holding Corp (SRRK) on 16 Jan 2026.
Change
- Previous filing in this sequence was filed on 05 Dec 2025.
- Current net transaction value: -$349,650.
Research use
- 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.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001980298
Primary reporting owner
Qatanani Mo
- Relationship
- CHIEF SCIENTIFIC OFFICER
- Address
- 301 BINNEY STREET, CAMBRIDGE
- Signature
- /s/ Junlin Ho, Attorney-in-Fact for Mo Qatanani
- Signature date
- 16 Jan 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
SRRK
transaction
Common Stock
Options Exercise
- Transaction value
- $25,439
- Shares
- +1,407
- Change %
- +1.3%
- Price
- $18.08
- Shares after
- 110,371
- Date
- 14 Jan 2026
- Ownership
- Direct
- Footnotes
- F1, F2
SRRK
transaction
Common Stock
Options Exercise
- Transaction value
- $2,446
- Shares
- +321
- Change %
- +0.29%
- Price
- $7.62
- Shares after
- 110,692
- Date
- 14 Jan 2026
- Ownership
- Direct
- Footnotes
- F1, F3
SRRK
transaction
Common Stock
Options Exercise
- Transaction value
- $28,130
- Shares
- +2,813
- Change %
- +2.5%
- Price
- $10.00
- Shares after
- 113,505
- Date
- 14 Jan 2026
- Ownership
- Direct
- Footnotes
- F1, F4
SRRK
transaction
Common Stock
Options Exercise
- Transaction value
- $92,815
- Shares
- +5,893
- Change %
- +5.2%
- Price
- $15.75
- Shares after
- 119,398
- Date
- 14 Jan 2026
- Ownership
- Direct
- Footnotes
- F1, F5
SRRK
transaction
Common Stock
Options Exercise
- Transaction value
- $94,132
- Shares
- +2,678
- Change %
- +2.2%
- Price
- $35.15
- Shares after
- 122,076
- Date
- 14 Jan 2026
- Ownership
- Direct
- Footnotes
- F1, F6
SRRK
transaction
Common Stock
Sale
- Transaction value
- $592,611
- Shares
- -13,112
- Change %
- -11%
- Price
- $45.20
- Shares after
- 108,964
- Date
- 14 Jan 2026
- Ownership
- Direct
- Footnotes
- F1, F7, F8
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
SRRK
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- $0
- Shares
- -1,407
- Change %
- -100%
- Price
- $0.000000
- Shares after
- 0
- Date
- 14 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 1,407
- Exercise price
- $18.08
- Footnotes
- F1, F9
SRRK
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- $0
- Shares
- -321
- Change %
- -25%
- Price
- $0.000000
- Shares after
- 961
- Date
- 14 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 321
- Exercise price
- $7.62
- Footnotes
- F1, F10
SRRK
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- $0
- Shares
- -2,813
- Change %
- -20%
- Price
- $0.000000
- Shares after
- 11,250
- Date
- 14 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 2,813
- Exercise price
- $10.00
- Footnotes
- F1, F11
SRRK
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- $0
- Shares
- -5,893
- Change %
- -11%
- Price
- $0.000000
- Shares after
- 47,143
- Date
- 14 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 5,893
- Exercise price
- $15.75
- Footnotes
- F1, F12
SRRK
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- $0
- Shares
- -2,678
- Change %
- -7.7%
- Price
- $0.000000
- Shares after
- 32,142
- Date
- 14 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 2,678
- Exercise price
- $35.15
- Footnotes
- F1, F13
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Rule 10b5-1 trading plan
These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.
Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).
Explanation of responses 13 footnotes
Footnote F1
This transaction was effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2025.
Footnote F2
Consists of 1,407 shares of common stock and 108,964 RSUs.
Footnote F3
Consists of 1,728 shares of common stock and 108,964 RSUs.
Footnote F4
Consists of 4,541 shares of common stock and 108,964 RSUs.
Footnote F5
Consists of 10,434 shares of common stock and 108,964 RSUs.
Footnote F6
Consists of 13,112 shares of common stock and 108,964 RSUs.
Footnote 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.
Footnote F8
Consists of 108,964 RSUs.
Footnote F9
No shares remain unvested under this stock option.
Footnote 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.
Footnote 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.
Footnote 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.
Footnote 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.