Company · Ownership research

Hemab Therapeutics Holdings, Inc. COAG

CIK 0002114044

Form 4 transactions dated Nov 1, 2023 to Nov 15, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through Sep 25, 2026.

Some filings are submitted jointly by several insiders. The SEC form does not apportion the reported figures between them, so results include every joint filer.

Insider purchases & sales

Purchased: $55.46M
Sold: $0.00

Nov 1, 2023 – Sep 25, 2026
Available records · partial months are marked ·

202610 of 11 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Jun 16, 2026	RA Capital Healthcare Fund LP · RA CAPITAL MANAGEMENT, L.P. · Kolchinsky Peter · Shah Rajeev M. 10% owner	Purchase	$1.54M 61,523 shares bought	Unavailable Indirect holding	▾
Jun 15, 2026	RA Capital Healthcare Fund LP · RA CAPITAL MANAGEMENT, L.P. · Kolchinsky Peter · Shah Rajeev M. 10% owner	Purchase	$152.97K 6,146 shares bought	Unavailable Indirect holding	▾
May 20, 2026	RA Capital Healthcare Fund LP · RA CAPITAL MANAGEMENT, L.P. · Kolchinsky Peter · Shah Rajeev M. 10% owner	Purchase	$24.84K 996 shares bought	Unavailable Indirect holding	▾
May 19, 2026	RA Capital Healthcare Fund LP · RA CAPITAL MANAGEMENT, L.P. · Kolchinsky Peter · Shah Rajeev M. 10% owner	Purchase	$94.94K 3,802 shares bought	Unavailable Indirect holding	▾
May 12, 2026	RA Capital Healthcare Fund LP · RA CAPITAL MANAGEMENT, L.P. · Kolchinsky Peter · Shah Rajeev M. 10% owner	Purchase	$159.04K 6,387 shares bought	Unavailable Indirect holding	▾
May 11, 2026	RA Capital Healthcare Fund LP · RA CAPITAL MANAGEMENT, L.P. · Kolchinsky Peter · Shah Rajeev M. 10% owner	Purchase	$989.23K 39,869 shares bought	Unavailable Indirect holding	▾
May 8, 2026	RA Capital Healthcare Fund LP · RA CAPITAL MANAGEMENT, L.P. · Kolchinsky Peter · Shah Rajeev M. 10% owner	Purchase	$37.05K 1,483 shares bought	Unavailable Indirect holding	▾
May 7, 2026	RA Capital Healthcare Fund LP · RA CAPITAL MANAGEMENT, L.P. · Kolchinsky Peter · Shah Rajeev M. 10% owner	Purchase	$242.32K 9,906 shares bought	Unavailable Indirect holding	▾
May 6, 2026	RA Capital Healthcare Fund LP · RA CAPITAL MANAGEMENT, L.P. · Kolchinsky Peter · Shah Rajeev M. · RA Capital Nexus Fund II, L.P. · RA Capital Nexus Fund IV, L.P. Director · 10% owner	Purchase	$1.67M 68,018 shares bought	Unavailable Indirect holding	▾
May 5, 2026	RA Capital Healthcare Fund LP · RA CAPITAL MANAGEMENT, L.P. · Kolchinsky Peter · Shah Rajeev M. · RA Capital Nexus Fund II, L.P. · RA Capital Nexus Fund IV, L.P. Director · 10% owner	Purchase	$2.40M 97,411 shares bought	Unavailable Indirect holding	▾

Showing 11 / 11 record groups in 2026. The complete set is available through the API.

Hemab Therapeutics Holdings, Inc. · COAG

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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.