Matthew Fraser Ahearn - 20 Apr 2026 Form 4 Insider Report for SHOULDER INNOVATIONS, INC. (SI)

Reporting relationship: Chief Operating Officer, Director
Issuer ticker: SI
Reported as of: 20 Apr 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 21 Apr 2026, 16:39:18 UTC
Prior SEC filing: 03 Feb 2026
Next SEC filing: 16 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Jeffrey Points, as Attorney-in-Fact

Key filing fact

Matthew Fraser Ahearn filed Form 4 for SHOULDER INNOVATIONS, INC. (SI) on 21 Apr 2026.

Key facts

This page summarizes Matthew Fraser Ahearn's Form 4 filing for SHOULDER INNOVATIONS, INC. (SI).
4 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 21 Apr 2026, 16:39.

Change

Previous filing in this sequence was filed on 03 Feb 2026.
Current net transaction value: $0.

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

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002070582 Primary reporting owner

Ahearn Matthew Fraser

Relationship: Chief Operating Officer, Director
Address: C/O SHOULDER INNOVATIONS, INC., 1535 STEELE AVENUE SW, SUITE B, GRAND RAPIDS
Signature: /s/ Jeffrey Points, as Attorney-in-Fact
Signature date: 21 Apr 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SI transaction

Common Stock

Options Exercise

Transaction value
Shares: +7,421
Change %: +2.8%
Price: $2.48^*
Shares after: 272,522
Date: 20 Apr 2026
Ownership: Direct
Footnotes: F1

SI transaction

Common Stock

Options Exercise

Transaction value
Shares: +14,243
Change %: +5.2%
Price: $2.86^*
Shares after: 286,765
Date: 20 Apr 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SI transaction Derivative

Stock Option

Options Exercise

Transaction value
Shares: -7,421
Change %: -46%
Price: $0.000000^*
Shares after: 8,864
Date: 20 Apr 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 7,421
Exercise price: $2.48
Footnotes: F2

SI transaction Derivative

Stock Option

Options Exercise

Transaction value
Shares: -14,243
Change %: -25%
Price: $0.000000^*
Shares after: 42,731
Date: 20 Apr 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 14,243
Exercise price: $2.86
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Includes the following shares received without consideration as in-kind distributions: (i) 39,404 shares from Genesis Investment Holdings; (ii) 1,572 shares from cultivate(MD) Capital Accelerator Fund, L.P.; (iii) 4,400 shares from Cultivate MD Capital Fund I, LLC; and (iv) 3,869 shares from Cultivate MD Capital Fund II, LP. In prior reports, the reporting person reported beneficial ownership of 215,856 shares of Shoulder Innovations common stock held directly.

Footnote F2

The stock option vested as to one-fourth of the underlying shares on April 19, 2024, and the remaining shares vest in 36 equal increments on the last day of each calendar month thereafter.

Footnote F3

The stock option vested as to one-fourth of the underlying shares on April 1, 2026, and the remaining shares vest in 12 equal increments on the last day of each fiscal quarter beginning on June 30, 2026.