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Livermore
Livermore
ZHEN

Surrozen, Inc.

SRZN
Exchange
Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
SEC CIK
0001824893

In the last 90 days, Surrozen, Inc. insiders filed 0 open-market purchases and 1 sale; 70 institutions reported holding it in 13F filings for Q2 2026, worth $314.5M in total; no superinvestor holds it.

Holders of 5% or more of SRZN

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Surrozen, Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of SRZN
HolderLatest formStakeChangeFirst filedLatest filingFiling
Column Group III GP, LP13D/A29.30%3.82M shares−5.80 ppfrom 35.10%Mar 28, 20253 filingsMay 18, 2026SEC
Venrock Healthcare Capital Partners III, L.P.13G/A9.90%1.21M shares0.00 ppfrom 9.90%Apr 2, 20252 filingsMay 15, 2026SEC
TCG Crossover GP II, LLC13G/A9.90%1.15M shares−2.80 ppfrom 12.70%Feb 2, 20263 filingsJul 24, 2026SEC
AI Biotechnology LLC13G9.90%844.6K sharesNewMar 31, 20251 filingMar 31, 2025SEC
Ra Capital Management, L.P.13G/A9.20%871.7K shares−0.70 ppfrom 9.90%May 15, 20252 filingsFeb 17, 2026SEC
Boxer Capital Management, LLC13G/A8.90%1.04M shares+2.23 ppfrom 6.67%May 15, 20262 filingsAug 14, 2026SEC
Integrated Core Strategies (US) LLC13G/A8.50%726.2K shares+1.90 ppfrom 6.60%Nov 20, 20252 filingsFeb 5, 2026SEC
5AM Partners VII, LLC13G/A7.80%968.8K shares−1.70 ppfrom 9.50%Apr 2, 20253 filingsAug 11, 2026SEC
Point72 Asset Management, L.P.13G5.40%616.0K sharesNewApr 23, 20261 filingApr 23, 2026SEC
StemPoint Capital LP13G5.00%602.8K shares+0.50 ppfrom 4.50%Feb 14, 20256 filingsAug 14, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

44 Schedule 13D and 13G filings on Surrozen, Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on SRZN
Filed (ET)FilerFormStakeChangeEvent dateFiling
Aug 14, 20264:09 PM ETBraidwell LPand 3 others13G/A3.90%460.8K shares−1.60 ppfrom 5.50%Below 5%Jun 30, 2026SEC
Aug 14, 20264:05 PM ETBoxer Capital Management, LLCand 3 others13G/A8.90%1.04M shares+2.23 ppfrom 6.67%Jun 30, 2026SEC
Aug 14, 202612:01 PM ETStemPoint Capital LPand 2 others13G5.00%602.8K shares+0.50 ppfrom 4.50%Jun 30, 2026SEC
Aug 11, 20264:22 PM ET5AM Partners VII, LLCand 3 others13G/A7.80%968.8K shares−1.70 ppfrom 9.50%Jun 30, 2026SEC
Jul 24, 20269:15 PM ETTCG Crossover GP II, LLCand 4 others13G/A9.90%1.15M shares−2.80 ppfrom 12.70%Jul 22, 2026SEC
May 18, 20266:49 AM ETColumn Group III GP, LPand 7 others13D/A29.30%3.82M shares−5.80 ppfrom 35.10%Mar 31, 2026SEC
May 15, 20264:37 PM ETNantahala Capital Management, LLCand 2 others13G/A2.14%225.8K shares−3.04 ppfrom 5.18%Below 5%Mar 31, 2026SEC
May 15, 20264:32 PM ETVenrock Healthcare Capital Partners III, L.P.and 6 others13G/A9.90%1.21M shares0.00 ppfrom 9.90%Mar 31, 2026SEC
May 15, 20264:25 PM ETTCG Crossover GP II, LLCand 4 others13G/A12.70%1.47M shares+1.30 ppfrom 11.40%Mar 31, 2026SEC
May 15, 20264:06 PM ET5AM Partners VII, LLCand 3 others13G/A9.50%1.16M shares−0.40 ppfrom 9.90%Mar 31, 2026SEC
May 15, 20264:01 PM ETBoxer Capital Management, LLCand 3 others13G6.67%766.3K sharesNewMar 31, 2026SEC
May 15, 202610:00 AM ETStemPoint Capital LPand 2 others13G/A4.50%525.6K shares−2.50 ppfrom 7.00%Below 5%Mar 31, 2026SEC
Apr 23, 20264:59 PM ETPoint72 Asset Management, L.P.and 2 others13G5.40%616.0K sharesNewApr 22, 2026SEC
Feb 17, 20264:48 PM ETBraidwell LPand 3 others13G5.50%470.0K sharesNewDec 31, 2025SEC
Feb 17, 20264:43 PM ETRa Capital Management, L.P.and 3 others13G/A9.20%871.7K shares−0.70 ppfrom 9.90%Dec 31, 2025SEC
Feb 17, 202610:01 AM ETStemPoint Capital LPand 2 others13G/A7.00%619.8K shares−4.40 ppfrom 11.40%Dec 31, 2025SEC
Feb 13, 20265:06 PM ETStonepine Capital Management, LLCand 3 others13G/A3.60%316.3K shares−2.20 ppfrom 5.80%Below 5%Dec 31, 2025SEC
Feb 5, 20264:28 PM ETIntegrated Core Strategies (US) LLCand 3 others13G/A8.50%726.2K shares+1.90 ppfrom 6.60%Dec 31, 2025SEC
Feb 2, 20264:13 PM ETTCG Crossover GP II, LLCand 4 others13G11.40%1.27M sharesNewJan 26, 2026SEC
Jan 22, 20266:55 PM ETColumn Group III GP, LPand 7 others13D/A35.10%3.82M shares+1.10 ppfrom 34.00%Jan 20, 2026SEC
Nov 20, 20254:28 PM ETIntegrated Core Strategies (US) LLCand 3 others13G6.60%564.8K sharesNewNov 13, 2025SEC
Aug 14, 20254:36 PM ETNantahala Capital Management, LLCand 2 others13G/A5.18%455.3K shares−4.81 ppfrom 9.99%Jun 30, 2025SEC
Aug 14, 202510:37 AM ETStemPoint Capital LPand 2 others13G/A11.40%1.02M shares−4.40 ppfrom 15.80%Jun 30, 2025SEC
Aug 14, 20257:44 AM ETDriehaus Capital Management LLC13G/A0.79%67.6K shares−5.46 ppfrom 6.25%Below 5%Jun 30, 2025SEC
Aug 13, 20254:08 PM ETStonepine Capital Management, LLCand 3 others13G/A5.80%508.7K shares−4.10 ppfrom 9.90%Jun 30, 2025SEC
May 15, 20254:55 PM ETRa Capital Management, L.P.and 3 others13G/A9.90%867.4K shares–Mar 31, 2025SEC
May 15, 20254:42 PM ETNantahala Capital Partners Limited Partnership13G/A2.20%73.9K shares−3.08 ppfrom 5.28%Below 5%Mar 31, 2025SEC
May 15, 20254:30 PM ETPerceptive Advisors LLCand 2 others13G/A1.90%166.7K shares−3.20 ppfrom 5.10%Below 5%Mar 31, 2025SEC
May 15, 202512:00 PM ETStemPoint Capital LPand 2 others13G/A15.80%570.5K shares+1.50 ppfrom 14.30%Mar 31, 2025SEC
May 15, 20257:36 AM ETDriehaus Capital Management LLC13G6.25%204.9K sharesNewMar 31, 2025SEC
May 14, 20254:14 PM ETStonepine Capital Management, LLCand 3 others13G/A9.90%332.5K shares–Mar 31, 2025SEC
Apr 2, 20254:49 PM ETVenrock Healthcare Capital Partners III, L.P.and 6 others13G9.90%872.5K sharesNewMar 26, 2025SEC
Apr 2, 20254:20 PM ET5AM Partners VII, LLCand 3 others13G9.90%908.4K sharesNewMar 26, 2025SEC
Mar 31, 20254:01 PM ETAI Biotechnology LLCand 3 others13G9.90%844.6K sharesNewMar 24, 2025SEC
Mar 28, 20259:19 PM ETColumn Group III GP, LPand 6 others13D/A34.00%3.41M shares–Mar 26, 2025SEC
Feb 14, 20254:32 PM ETNantahala Capital Management, LLCand 2 others13G/A9.99%338.9K shares0.00 ppfrom 9.99%Dec 31, 2024SEC
Feb 14, 20254:21 PM ETAlyeska Investment Group, L.P.and 2 others13G/A0.80%26.9K shares–Below 5%Dec 31, 2024SEC
Feb 14, 20254:15 PM ETPerceptive Advisors LLCand 2 others13G5.10%166.7K sharesNewDec 31, 2024SEC
Feb 14, 20251:03 PM ETStemPoint Capital LPand 2 others13G/A14.30%485.2K shares–Dec 31, 2024SEC
Nov 14, 20244:53 PM ETNantahala Capital Partners Limited Partnership13G5.28%177.0K sharesNewSep 30, 2024SEC
Nov 14, 20244:53 PM ETNantahala Capital Management, LLCand 2 others13G9.99%335.0K sharesNewSep 30, 2024SEC
Apr 27, 2021Consonance Capital Management LP13D/AOld format–––SEC
Feb 16, 2021Consonance Capital Management LP13GOld format–New–SEC
Feb 16, 2021Glazer Capital, LLC13GOld format–New–SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Surrozen, Inc. shares.

No Form 144 notices for Surrozen, Inc. are on file.