Company · Ownership research

RHYTHM PHARMACEUTICALS, INC. RYTM

CIK 0001649904

Form 4 transactions dated Nov 1, 2023 to Nov 8, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 51 rows; the complete set is available through the API.

Insider filings on file run through Sep 14, 2026.

Insider purchases & sales

Purchased: $0.00
Sold: $98.29M

Nov 1, 2023 – Sep 14, 2026
Available records · partial months are marked ·

202510 of 30 preview events · 51 available in 2025

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 11, 2025	Cramer Pamela J. Chief Human Resources Officer	Sale10b5-1 footnote	$371.85K 3,350 shares sold	13.86% sold Direct holding	▾
Nov 20, 2025	Cramer Pamela J. Chief Human Resources Officer	Sale10b5-1 footnote	$351.75K 3,350 shares sold	13.86% sold Direct holding	▾
Nov 10, 2025	Cramer Pamela J. Chief Human Resources Officer	Sale10b5-1 footnote	$351.50K 3,515 shares sold	14.45% sold Direct holding	▾
Nov 7, 2025	Cramer Pamela J. Chief Human Resources Officer	Sale10b5-1 footnote	$1.91M 19,351 shares sold	48.18% sold Direct holding	▾
Oct 30, 2025	Shulman Joseph Chief Technical Officer	Sale10b5-1 footnote	$1.12M 9,748 shares sold	53.39% sold Direct holding	▾
Oct 28, 2025	Shulman Joseph Chief Technical Officer	Sale10b5-1 footnote	$323.75K 2,815 shares sold	24.86% sold Direct holding	▾
Oct 16, 2025	Shulman Joseph Chief Technical Officer	Sale10b5-1 footnote	$1.62M 14,437 shares sold	62.92% sold Direct holding	▾
Sep 2, 2025	Shulman Joseph Chief Technical Officer	Sale10b5-1 footnote	$1.77M 16,781 shares sold	66.35% sold Direct holding	▾
Aug 21, 2025	Shulman Joseph Chief Technical Officer	Sale10b5-1 footnote	$419.09K 4,188 shares sold	32.98% sold Direct holding	▾
Aug 13, 2025	Smith Hunter C Chief Financial Officer	Sale10b5-1 footnote	$333.79K 3,477 shares sold	2.89% sold Direct holding	▾

Showing 30 / 51 record groups in 2025. The complete set is available through the API.

RHYTHM PHARMACEUTICALS, INC. · RYTM

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 30 of 51 purchase / sale groups and 30 of 154 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"RYTM","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.