Vault-13

SURROZEN INC SRZN

COM NEW · Common Stock · CUSIP 86889P208

31 institutional holders +1 vs Q1 2025
4,662,5124.7m shares reported held*
54.4% of all shares outstanding*
$41.7mreported value*
3 new 9 added 3 reduced 2 sold out net bought ≈ $6.4m (+714.9k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 8.6m as of 2025-08-04, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $8.94.

Trends to Q2 2025

Institutional holders

Managers reporting a position, each quarter

02040Q4 23: 17Q1 24: 16Q2 24: 21Q3 24: 23Q4 24: 24Q1 25: 30Q2 25: 3131Q4 23Q2 24Q4 24Q2 25
Numbers
QuarterHolders
Q4 202317
Q1 202416
Q2 202421
Q3 202423
Q4 202424
Q1 202530
Q2 202531

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
20020Q1 24: 6 bought or addedQ1 24: 4 cut or sold outQ1 24Q2 24: 12 bought or addedQ2 24: 6 cut or sold outQ2 24Q3 24: 8 bought or addedQ3 24: 7 cut or sold outQ3 24Q4 24: 8 bought or addedQ4 24: 9 cut or sold outQ4 24Q1 25: 17 bought or addedQ1 25: 3 cut or sold outQ1 25Q2 25: 12 bought or addedQ2 25: 5 cut or sold outQ2 25
Numbers
QuarterBought or addedCut or sold out
Q1 202464
Q2 2024126
Q3 202487
Q4 202489
Q1 2025173
Q2 2025125

Biggest buyers

STEMPOINT CAPITAL LP Added +445,713+445.7k
VANGUARD GROUP INC Added +150,924+150.9k
BRAIDWELL LP New +140,000+140.0k
REGENTS OF THE UNIVERSITY OF CALIFORNIA Added +133,207+133.2k
ARMISTICE CAPITAL, LLC New +60,000+60.0k
Stonepine Capital Management, LLC Added +20,247+20.2k
CITADEL ADVISORS LLC New +10,451+10.5k
BlackRock, Inc. Added +7,163+7.2k
GEODE CAPITAL MANAGEMENT, LLC Added +5,702+5.7k
RENAISSANCE TECHNOLOGIES LLC Added +400+400

Biggest sellers

Driehaus Capital Management LLC Reduced -137,368-137.4k
RA CAPITAL MANAGEMENT, L.P. Reduced -76,504-76.5k
HEIGHTS CAPITAL MANAGEMENT, INC Sold out -44,978-45.0k
Tower Research Capital LLC (TRC) Reduced -186-186
JPMORGAN CHASE & CO Sold out -5-5

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
COLUMN GROUP III GP, LP 13D · may seek influence -7.8 pts · filed 2026-10-22
Stated purposeThe information set forth in Item 4 of the Original Schedule 13D is incorporated herein by reference. Full filing
 21.5% -7.8 pts 3.8m≈ $72.1m 2026-10-22
Boxer Capital Management, LLC 13G · institution +2.7 pts · filed 2026-10-07 11.6% +2.7 pts 1.4m≈ $35.3m 2026-10-07
Column Group IV GP, LP 13D · may seek influence new · filed 2026-02-12
Stated purposeThe information set forth in Item 3 of this Statement is incorporated herein by reference. The Reporting Persons hold the securities of the Issuer for general investment purposes. The Reporting Persons may, from time to time, depending on prevailing market, economic and other conditions, acquire additional shares of Common Stock or other securities of the Issuer, dispose of any such securities, or engage in discussions with the Issuer concerning such acquisitions or dispositions or further investments in the Issuer. The Reporting Persons intend to review their investment in the Issuer on a continuing basis and, depending upon the price and availability of shares of Common Stock or other securities of the Issuer, subsequent developments affecting the Issuer, the Issuer's business and prospe… Full filing
 11.6% new 6.4m≈ $38.9m 2026-02-12
TCG Crossover GP II, LLC 13G · passive investor -2.8 pts · filed 2026-07-24 9.9% -2.8 pts 1.1m≈ $29.8m 2026-07-24
Venrock Healthcare Capital Partners III, L.P. 13G · passive investor no change · filed 2026-05-15 9.9% no change 1.2m≈ $31.3m 2026-05-15
AI Biotechnology LLC 13G · passive investor new · filed 2025-03-31 9.9% new 844.6k≈ $21.9m 2025-03-31
RA CAPITAL MANAGEMENT, L.P. 13G · passive investor -0.7 pts · filed 2026-02-17 9.2% -0.7 pts 871.7k≈ $22.6m 2026-02-17
INTEGRATED CORE STRATEGIES (US) LLC 13G · passive investor +1.9 pts · filed 2026-02-05 8.5% +1.9 pts 726.2k≈ $18.8m 2026-02-05
5AM Partners VII, LLC 13G · passive investor -1.7 pts · filed 2026-08-11 7.8% -1.7 pts 968.8k≈ $25.1m 2026-08-11
Commodore Capital LP 13G · passive investor new · filed 2026-10-01 7.5% new 885.0k≈ $23.0m 2026-10-01
Point72 Asset Management, L.P. 13G · passive investor new · filed 2026-04-23 5.4% new 616.0k≈ $16.0m 2026-04-23
STEMPOINT CAPITAL LP 13G · institution +0.5 pts · filed 2026-08-14 5.0% +0.5 pts 602.8k≈ $15.6m 2026-08-14

Fell to 5% or below in the last year: BRAIDWELL LP (3.9%, 2026-08-14), Nantahala Capital Management, LLC (2.1%, 2026-05-15), Stonepine Capital Management, LLC (3.6%, 2026-02-13)

Insider purchases and sales in Q2 2025

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q3 23: 0 buyingQ3 23: 0 sellingQ4 23: 0 buyingQ4 23: 0 sellingQ4 23Q1 24: 0 buyingQ1 24: 0 sellingQ2 24: 3 buyingQ2 24: 0 sellingQ2 24Q3 24: 0 buyingQ3 24: 0 sellingQ4 24: 0 buyingQ4 24: 0 sellingQ4 24Q1 25: 0 buyingQ1 25: 2 sellingQ2 25: 0 buyingQ2 25: 0 sellingQ2 25
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q3 20230—0——
Q4 20230—0——
Q1 20240—0——
Q2 20243$3.0m0——
Q3 20240—0——
Q4 20240—0——
Q1 20250—2$35.2k—
Q2 20250—0——

None reported in Q2 2025.

Holders, Q2 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 STEMPOINT CAPITAL LP 1.98% of their portfolio NEW YORK, NY 686,539686.5k $6.1m $6.1m 1.98% Added +445.7k +445,713
2 Venrock Adviser, LLC 0.42% of their portfolio NEW YORK, NY 632,931632.9k $5.7m $5.7m 0.42% Unchanged
3 RA CAPITAL MANAGEMENT, L.P. 0.09% of their portfolio BOSTON, MA 602,626602.6k $5.4m $5.4m 0.09% Reduced -76.5k -76,504
4 5AM Venture Management, LLC 1.07% of their portfolio SAN FRANCISCO, CA 310,000310.0k $2.8m $2.8m 1.07% Unchanged
5 Stonepine Capital Management, LLC 2.70% of their portfolio Bend, OR 306,029306.0k $2.7m $2.7m 2.70% Added +20.2k +20,247
6 REGENTS OF THE UNIVERSITY OF CALIFORNIA 0.14% of their portfolio OAKLAND, CA 266,414266.4k $2.4m $2.4m 0.14% Added +133.2k +133,207
7 Vivo Capital, LLC 0.24% of their portfolio Palo Alto, CA 260,000260.0k $2.3m $2.3m 0.24% Unchanged
8 SAMSARA BIOCAPITAL, LLC 0.44% of their portfolio PALO ALTO, CA 241,400241.4k $2.2m $2.2m 0.44% Unchanged
9 Nantahala Capital Management, LLC 0.15% of their portfolio NEW CANAAN, CT 229,527229.5k $2.1m $2.1m 0.15% Unchanged
10 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 218,950218.9k $2.0m $2.0m 0.00% Added +150.9k +150,924
11 ACUTA CAPITAL PARTNERS, LLC 2.12% of their portfolio REDWOOD CITY, CA 170,000170.0k $1.5m $1.5m 2.12% Unchanged
12 BRAIDWELL LP 0.04% of their portfolio STAMFORD, CT 140,000140.0k $1.3m $1.3m 0.04% New
13 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.00% of their portfolio Boston, MA 88,65388.7k $792.6k $792.6k 0.00% Unchanged
14 Euclidean Capital LLC 0.26% of their portfolio NEW YORK, NY 87,69687.7k $784.0k $784.0k 0.26% Unchanged
15 Driehaus Capital Management LLC 0.00% of their portfolio Chicago, IL 67,56667.6k $604.0k $604.0k 0.00% Reduced -137.4k -137,368
16 ARMISTICE CAPITAL, LLC 0.02% of their portfolio NEW YORK, NY 60,00060.0k $536.4k $536.4k 0.02% New
17 ArrowMark Colorado Holdings LLC 0.01% of their portfolio Denver, CO 55,12355.1k $492.8k $492.8k 0.01% Unchanged
18 Board of Trustees of The Leland Stanford Junior University 0.05% of their portfolio STANFORD, CA 52,13052.1k $466.0k $466.0k 0.05% Unchanged
19 Trustees of Columbia University in the City of New York 0.06% of their portfolio NEW YORK, NY 47,93047.9k $428.5k $428.5k 0.06% Unchanged
20 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 34,76434.8k $310.8k $310.8k 0.00% Unchanged
21 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 30,96331.0k $276.9k $276.9k 0.00% Added +5.7k +5,702
22 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 21,71521.7k $195.0k $195.0k 0.00% Unchanged
23 BlackRock, Inc. 0.00% of their portfolio New York, NY 15,48315.5k $138.4k $138.4k 0.00% Added +7.2k +7,163
24 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 14,62614.6k $130.8k $130.8k 0.00% Added +400 +400
25 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 10,45110.5k $93.4k $93.4k 0.00% New
26 Alyeska Investment Group, L.P. 0.00% of their portfolio CHICAGO, IL 10,18810.2k $91.1k $91.1k 0.00% Unchanged
27 WOLVERINE ASSET MANAGEMENT LLC 0.00% of their portfolio CHICAGO, IL 281281 $2.5k $2.5k 0.00% Unchanged
28 UBS Group AG 0.00% of their portfolio ZURICH, V8 259259 $2.3k $2.3k 0.00% Added +62 +62
29 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 216216 $1.9k $1.9k 0.00% Reduced -186 -186
30 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 5252 $465 $465 0.00% Added +36 +36
31 CONCOURSE FINANCIAL GROUP SECURITIES, INC. — of their portfolio BIRMINGHAM, AL 00 $0 $0 — Unchanged