ISSUER PROFILE · CIK 0002114044

Hemab Therapeutics Holdings, Inc.COAG

1 13D/G filings 1 distinct filers 37 insider transactions (365d)

Post-Filing Returns · across 1 activist filings on this issuer

Median 30d

+3.3%

avg +3.3%

Median 60d

+18.3%

avg +18.3%

Median 90d

—

avg —

Median 180d

—

avg —

Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Cross-Reference Snapshot

Activist filings

1 SCHEDULE 13D

Distinct filers

single filer

Insiders (365d)

21 buys · 0 sales

Latest short DTC

4.25

as of 2026-07-31

13D/G Filings Timeline · 1 total

Filed	Form	Filer	Stake	Shares	Intent
2026-05-11	SCHEDULE 13D	AI DEN-MAB LLC	—	4,876,344		view →

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-06-16	RA CAPITAL MANAGEMENT, L.P.	10%+	Buy	61,523	$24.98	$1.54M
2026-06-15	RA CAPITAL MANAGEMENT, L.P.	10%+	Buy	6,146	$24.89	$153K
2026-05-20	RA CAPITAL MANAGEMENT, L.P.	10%+	Buy	996	$24.94	$25K
2026-05-19	RA CAPITAL MANAGEMENT, L.P.	10%+	Buy	3,802	$24.97	$95K
2026-05-12	RA CAPITAL MANAGEMENT, L.P.	10%+	Buy	6,387	$24.90	$159K
2026-05-11	RA CAPITAL MANAGEMENT, L.P.	10%+	Buy	14,149	$24.47	$346K
2026-05-11	RA CAPITAL MANAGEMENT, L.P.	10%+	Buy	25,720	$25.00	$643K
2026-05-08	RA CAPITAL MANAGEMENT, L.P.	10%+	Buy	1,483	$24.98	$37K
2026-05-07	RA CAPITAL MANAGEMENT, L.P.	10%+	Buy	7,921	$24.34	$193K
2026-05-07	RA CAPITAL MANAGEMENT, L.P.	10%+	Buy	1,985	$24.95	$50K
2026-05-06	RA CAPITAL MANAGEMENT, L.P.	director, 10%+	Buy	14,611	$23.77	$347K
2026-05-06	RA CAPITAL MANAGEMENT, L.P.	director, 10%+	Buy	53,407	$24.83	$1.33M
2026-05-05	RA CAPITAL MANAGEMENT, L.P.	director, 10%+	Buy	87,143	$24.59	$2.14M
2026-05-05	RA CAPITAL MANAGEMENT, L.P.	director, 10%+	Buy	10,268	$25.00	$257K
2026-05-04	RA CAPITAL MANAGEMENT, L.P.	director, 10%+	C	3,607,846	—	—
2026-05-04	Novo Holdings A/S	10%+	C	4,180,550	—	—
2026-05-04	MARAGANORE JOHN	director	C	17,974	—	—
2026-05-04	MARAGANORE JOHN	director	C	817	—	—
2026-05-04	RA CAPITAL MANAGEMENT, L.P.	director, 10%+	C	1,009,052	—	—
2026-05-04	RA CAPITAL MANAGEMENT, L.P.	director, 10%+	C	221,188	—	—
2026-05-04	RA CAPITAL MANAGEMENT, L.P.	director, 10%+	Buy	2,541,250	$18.00	$45.74M
2026-05-04	RA CAPITAL MANAGEMENT, L.P.	director, 10%+	Buy	133,750	$18.00	$2.41M
2026-05-04	RA CAPITAL MANAGEMENT, L.P.	director, 10%+	C	64,680	—	—
2026-05-04	RA CAPITAL MANAGEMENT, L.P.	director, 10%+	C	27,720	—	—
2026-05-04	RA CAPITAL MANAGEMENT, L.P.	director, 10%+	C	42,341	—	—

Showing 25 of 37

FINRA Short Interest History

Settlement	Short Interest	Days to Cover	% Δ vs prior
2026-07-31	2,038,062	4.25	+22.9%
2026-07-15	1,658,857	5.33	-3.3%
2026-06-30	1,714,796	4.05	+26.6%
2026-06-15	1,354,937	7.55	+32.0%
2026-05-29	1,026,514	6.49	+35.3%
2026-05-15	758,697	1.22	+100.0%

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