SCHEDULE 13D/A Filed 2026-05-18 Event 2026-03-31 SEC 0001193125-26-227857 →

COLUMN GROUP III GP, LP → Surrozen, Inc. SRZNW

Stake: — Shares: 2,962,544 Class: Common Stock, $0.0001 par value per share

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

37 transactions

31 buys · 0 sales · 6 awards/exercises

Issuer Cluster

6 13D/G filings on this issuer

5 other filings besides this one

Filer Track Record

4 filings by this filer

3 other filings in the data moat

Short Interest · settle 2026-04-30

DTC 10.64

18,999 shares short · -31.6% vs prior

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-05-13	Rothenberg Mace	director	Award	5,550	$30.14	$167K
2026-05-13	WOODHOUSE DAVID J	director	Award	5,550	$30.14	$167K
2026-05-13	Haak-Frendscho Mary	director	Award	5,550	$30.14	$167K
2026-05-13	CHAI CHRISTOPHER Y	director	Award	5,550	$30.14	$167K
2026-05-13	BJERKHOLT ERIC	director	Award	5,550	$30.14	$167K
2026-05-13	Berkenblit Anna	director	Award	5,550	$30.14	$167K
2026-05-01	Li Yang	officer	Option exercise	4,375	—	—
2026-05-01	Williams Charles O	officer	Option exercise	5,625	—	—
2026-05-01	Parker Craig C	director, officer	Option exercise	12,500	—	—
2026-03-31	Li Yang	officer	Gift	1,666	—	—
2026-03-23	TCG Crossover GP II, LLC	10%+ owner	Buy	7,612	$24.90	$190K
2026-03-12	TCG Crossover GP II, LLC	10%+ owner	Buy	6,187	$24.99	$155K
2026-02-17	Li Yang	officer	Award	100,950	$24.53	$2.48M
2026-02-17	Williams Charles O	officer	Award	102,900	$24.53	$2.52M
2026-02-17	Parker Craig C	director, officer	Award	242,200	$24.53	$5.94M
2026-02-11	TCG Crossover GP II, LLC	10%+ owner	Buy	8,882	$23.57	$209K
2026-01-30	TCG Crossover GP II, LLC	10%+ owner	Buy	2,136	$21.39	$46K
2026-01-23	Williams Charles O	officer	Award	500	$19.59	$10K
2026-01-15	COLUMN GROUP III GP, LP	10%+ owner	Buy	5,590	$19.89	$111K
2026-01-15	Kutzkey Tim	director, 10%+ owner	Buy	5,590	$19.89	$111K
2026-01-13	Kutzkey Tim	director, 10%+ owner	Buy	5,861	$19.80	$116K
2026-01-13	COLUMN GROUP III GP, LP	10%+ owner	Buy	5,861	$19.80	$116K
2026-01-06	COLUMN GROUP III GP, LP	10%+ owner	Buy	7,097	$19.89	$141K
2026-01-06	Kutzkey Tim	director, 10%+ owner	Buy	7,097	$19.89	$141K
2026-01-02	Li Yang	officer	Option exercise	2,500	—	—

Showing 25 of 37

Other 13D/G Filings on Surrozen, Inc.

Filed	Form	Filer	Stake	Shares
2026-01-22	SCHEDULE	COLUMN GROUP III GP, LP	35.10%	3,824,612	view →
2024-04-08	SC	COLUMN GROUP III GP, LP	—	—	view →
2021-09-29	SC	Consonance Capital Management LP	—	—	view →
2021-08-18	SC	Consonance Capital Management LP	—	—	view →
2021-04-27	SC	Consonance Capital Management LP	—	—	view →

Other Filings by COLUMN GROUP III GP, LP

Filed	Form	Issuer	Stake	Shares
2026-01-22	SCHEDULE	Surrozen, Inc./DE SRZNW	35.10%	3,824,612	view →
2024-04-08	SC	Surrozen, Inc.	—	—	view →
2024-04-08	SC	Surrozen, Inc./DE SRZNW	—	—	view →

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