German Christopher Paul 4

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

AI-generated summary of this filing

Updated Feb 3, 2026

RYTM CAO German Christopher Paul Converts RSUs; 1,138 Shares Withheld

What Happened

German Christopher Paul, Corporate Controller & CAO of Rhythm Pharmaceuticals (RYTM), had restricted stock units (RSUs) convert into 3,613 shares on Feb 1, 2026. As part of the settlement, 1,138 shares were withheld to cover withholding taxes, valued at approximately $124,031.
The filing shows two separate conversion entries of 1,806 and 1,807 shares (reported as dispositions at $0) consistent with conversion/settlement of two RSU grants. These are reporting mechanics of vested RSUs, not open-market sales.

Key Details

Transaction date: Feb 1, 2026; Form 4 filed Feb 3, 2026 (timely filing).
Withheld-for-taxes detail: 1,138 shares withheld at $108.99 per share for $124,031 (code F — tax withholding).
Conversion entries: 3,613 shares reported as acquired via derivative conversion (code M); two conversion/disposition lines of 1,806 and 1,807 shares at $0 reflect settlement mechanics.
Shares owned after transaction: not specified in the excerpted filing.
Footnotes: F1–F5 confirm these were RSUs (one RSU grant vests 25% on Feb 16, 2025 and then annually; another vests 25% on Feb 1 of 2026–2029). F2 notes 36 shares include purchases under the company ESPP; F3 explains shares withheld were for taxes.

Context

This was compensation-related (RSU vesting and net share settlement), not an open-market buy or sell. Withholdings to satisfy tax liabilities are routine following RSU vesting and do not necessarily indicate insider sentiment.

Form 4

Period: 2026-02-01

Corporate Controller & CAO

Transactions

Exercise/Conversion
Common Stock
[F1][F2]
2026-02-01+3,613→ 4,571 total
Tax Payment
Common Stock
[F3]
2026-02-01$108.99/sh−1,138$124,031→ 3,433 total
Exercise/Conversion
Restricted Stock Units
[F1][F4]
2026-02-01−1,806→ 3,612 total
→ Common Stock (1,806 underlying)
Exercise/Conversion
Restricted Stock Units
[F1][F5]
2026-02-01−1,807→ 5,418 total
→ Common Stock (1,807 underlying)

Footnotes (5)

[F1]Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.
[F2]Includes 36 shares of Common Stock purchased pursuant to the Rhythm Pharmaceuticals, Inc. Employee Stock Purchase Plan.
[F3]These shares were withheld for payment of the withholding taxes upon the vesting of the restricted stock units reported herein.
[F4]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.
[F5]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 Christopher Paul German|2026-02-03

1 file