Company · Ownership research

COLLEGIUM PHARMACEUTICAL, INC COLL

CIK 0001267565

Form 4 transactions dated Sep 1, 2023 to Sep 25, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through 2026-06-10.

Insider purchases & sales

Purchased: $0.00
Sold: $27.05M

Sep 1, 2023 – Jun 10, 2026
Available records · partial months are marked ·

20267 of 7 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-05-18	Freund John Gordon Director	Sale	$681.00 20 shares sold	0.02% sold Direct holding	▾
2026-05-15	Freund John Gordon Director	Sale	$142.55K 4,127 shares sold	4.68% sold Direct holding	▾
2026-05-13	Lurker Nancy Director	Sale	$161.86K 4,500 shares sold	19.98% sold Direct holding	▾
2026-05-11	BOHLIN GAREN G Director	Sale	$323.49K 8,700 shares sold	12.26% sold Direct holding	▾
2026-03-18	Dieter David EVP & General Counsel	Sale10b5-1 footnote	$488.10K 13,976 shares sold	15.35% sold Direct holding	▾
2026-03-09	Dieter David EVP & General Counsel	Sale10b5-1 footnote	$228.11K 6,224 shares sold	6.40% sold Direct holding	▾
2026-03-03	Dreyer Scott EVP & Chief Commercial Officer	Sale10b5-1 footnote	$2.02M 49,976 shares sold	41.05% sold Direct holding	▾

Showing 7 / 7 record groups in 2026. The complete set is available through the API.

COLLEGIUM PHARMACEUTICAL, INC · COLL

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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 7 of 7 purchase / sale groups and 24 of 24 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"COLL","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. 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.