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

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 ·

2023, from Nov 1, 202310 of 11 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 28, 2023	Shulman Joseph Chief Technical Officer	Sale10b5-1 footnote	$396.32K 7,926 shares sold	100.00% sold Direct holding	▾
Dec 27, 2023	Shulman Joseph Chief Technical Officer	Sale10b5-1 footnote	$250.80K 5,015 shares sold	81.66% sold Direct holding	▾
Dec 6, 2023	Smith Hunter C Chief Financial Officer	Sale10b5-1 footnote	$800.00K 20,000 shares sold	24.57% sold Direct holding	▾
Dec 5, 2023	Smith Hunter C Chief Financial Officer	Sale10b5-1 footnote	$246.36K 7,026 shares sold	10.27% sold Direct holding	▾
Nov 24, 2023	Smith Hunter C Chief Financial Officer	Sale10b5-1 footnote	$384.34K 10,974 shares sold	15.16% sold Direct holding	▾
Nov 14, 2023	Shulman Joseph Chief Technical Officer	Sale10b5-1 footnote	$894.33K 27,890 shares sold	88.17% sold Direct holding	▾
Nov 14, 2023	Lee Jennifer Kayden EVP, Head of North America	Sale10b5-1 footnote	$437.82K 13,677 shares sold	100.00% sold Direct holding	▾
Nov 14, 2023	Smith Hunter C Chief Financial Officer	Sale10b5-1 footnote	$364.57K 12,000 shares sold	16.35% sold Direct holding	▾
Nov 9, 2023	Lee Jennifer Kayden EVP, Head of North America	Sale10b5-1 footnote	$95.18K 3,438 shares sold	67.61% sold Direct holding	▾
Nov 8, 2023	Lee Jennifer Kayden EVP, Head of North America	Sale10b5-1 footnote	$165.10K 5,712 shares sold	77.62% sold Direct holding	▾

Showing 11 / 11 record groups in 2023. 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 11 of 11 purchase / sale groups and 24 of 24 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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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.