Cramer Pamela J. 4

4 · RHYTHM PHARMACEUTICALS, INC. · Filed Feb 3, 2026

AI-generated summary of this filing

Updated Feb 3, 2026

RYTM CHRO Pamela Cramer Receives 13,293 Shares (RSU Vesting)

What Happened

Pamela J. Cramer, Chief Human Resources Officer of RHYTHM Pharmaceuticals (RYTM), had 13,293 restricted stock units (RSUs) convert into common shares on February 1, 2026. Of those, 4,731 shares were withheld to cover tax withholding at $108.99 per share, generating $515,632 in tax withholdings. The remaining 8,562 shares were issued to her account. The filing shows the RSU conversions as derivative transactions (code M) and the withholding as a tax payment (code F).

Key Details

Transaction date: February 1, 2026; Form 4 filed February 3, 2026 (filed within the two-business-day SEC window).
Total RSUs vesting/converted: 13,293 shares.
Shares withheld for taxes: 4,731 shares at $108.99/share = $515,632.
Net shares received by insider: 8,562 shares (13,293 vested − 4,731 withheld).
Footnotes: Each RSU equals one share (F1). Shares were withheld to pay withholding taxes upon vesting (F2). Multiple RSU grants with different vesting schedules are referenced (F3–F6); several grants vested 25% on various prior/future February dates. The RSUs have no expiration date.
Shares owned after the transaction: not specified in the provided filing excerpt.

Context

This was an RSU vesting event (conversion of restricted stock units into shares), not an open-market purchase or discretionary sale. The withholding of shares to satisfy tax liabilities is a routine administrative disposition and does not necessarily signal a change in insider sentiment. The filing appears timely.

Form 4

Period: 2026-02-01

Chief Human Resources Officer

Transactions

Exercise/Conversion
Common Stock
[F1]
2026-02-01+13,293→ 34,107 total
Tax Payment
Common Stock
[F2]
2026-02-01$108.99/sh−4,731$515,632→ 29,376 total
Exercise/Conversion
Restricted Stock Units
[F1][F3]
2026-02-01−2,343→ 0 total
→ Common Stock (2,343 underlying)
Exercise/Conversion
Restricted Stock Units
[F1][F4]
2026-02-01−2,650→ 2,650 total
→ Common Stock (2,650 underlying)
Exercise/Conversion
Restricted Stock Units
[F1][F5]
2026-02-01−3,300→ 6,600 total
→ Common Stock (3,300 underlying)
Exercise/Conversion
Restricted Stock Units
[F1][F6]
2026-02-01−5,000→ 15,000 total
→ Common Stock (5,000 underlying)

Footnotes (6)

[F1]Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.
[F2]These shares were withheld for payment of the withholding taxes upon the vesting of the restricted stock units reported herein.
[F3]The restricted stock units vest as to 25% of the total shares on each of February 9, 2023, February 9, 2024, February 9, 2025 and February 1, 2026. The restricted stock units have no expiration date.
[F4]The restricted stock units vest as to 25% of the total shares on each of February 1, 2024, February 1, 2025, February 1, 2026 and February 1, 2027. The restricted stock units have no expiration date.
[F5]The restricted stock units vest as to 25% of the total shares on each of February 16, 2025, February 1, 2026, February 1, 2027 and February 1, 2028. The restricted stock units have no expiration date.
[F6]The restricted stock units vest as to 25% of the total shares on each of February 1, 2026, February 1, 2027, February 1, 2028 and February 1, 2029. The restricted stock units have no expiration date.

Signature

/s/ Stephen Vander Stoep, attorney-in-fact for Pamela J. Cramer|2026-02-03

1 file