SURROZEN INC SRZN
COM NEW · Common Stock · CUSIP 86889P208
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersSouth San Francisco, CA
- FilingsSEC EDGAR
* 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: 3.2m as of 2024-08-08, 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 ≈ $10.95. Options: 1 managers hold calls ($2.7m notional), 0 hold puts (—).
Trends to Q2 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q4 2023 | 17 |
| Q1 2024 | 16 |
| Q2 2024 | 21 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2024 | 6 | 4 |
| Q2 2024 | 12 | 6 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $0 | $0 | — |
| Q4 2023 | $2.4m | $0 | 0.00 |
| Q1 2024 | $0 | $0 | — |
| Q2 2024 | $2.7m | $0 | 0.00 |
Biggest buyers
| Nantahala Capital Management, LLC | New | +374.4k |
| RA CAPITAL MANAGEMENT, L.P. | New | +282.6k |
| ARMISTICE CAPITAL, LLC | New | +190.0k |
| STEMPOINT CAPITAL LP | New | +143.5k |
| Stonepine Capital Management, LLC | New | +66.1k |
| CVI Holdings, LLC | New | +64.9k |
| UBS Group AG | New | +12.0k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +7.2k |
| BlackRock Inc. | Added | +3.3k |
| ROYAL BANK OF CANADA | Added | +180 |
Biggest sellers
| MORGAN STANLEY | Reduced | -70.4k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -1.3k |
| VANGUARD GROUP INC | Reduced | -676 |
| ADAR1 Capital Management, LLC | Sold out | -450 |
| Tower Research Capital LLC (TRC) | Sold out | -184 |
| WELLS FARGO & COMPANY/MN | Sold out | -10 |
Biggest calls
| Alyeska Investment Group, L.P. | New | $2.7m250.0k shares |
Biggest puts
| None |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
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.
| Holder | Stake |
|---|---|
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% |
| Boxer Capital Management, LLC 13G · institution +2.7 pts · filed 2026-10-07 | 11.6% |
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% |
| TCG Crossover GP II, LLC 13G · passive investor -2.8 pts · filed 2026-07-24 | 9.9% |
| Venrock Healthcare Capital Partners III, L.P. 13G · passive investor no change · filed 2026-05-15 | 9.9% |
| AI Biotechnology LLC 13G · passive investor new · filed 2025-03-31 | 9.9% |
| RA CAPITAL MANAGEMENT, L.P. 13G · passive investor -0.7 pts · filed 2026-02-17 | 9.2% |
| INTEGRATED CORE STRATEGIES (US) LLC 13G · passive investor +1.9 pts · filed 2026-02-05 | 8.5% |
| 5AM Partners VII, LLC 13G · passive investor -1.7 pts · filed 2026-08-11 | 7.8% |
| Commodore Capital LP 13G · passive investor new · filed 2026-10-01 | 7.5% |
| Point72 Asset Management, L.P. 13G · passive investor new · filed 2026-04-23 | 5.4% |
| STEMPOINT CAPITAL LP 13G · institution +0.5 pts · filed 2026-08-14 | 5.0% |
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 2024
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)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 0 | — | — |
| Q1 2023 | 0 | — | 0 | — | — |
| Q2 2023 | 0 | — | 0 | — | — |
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 3 | $3.0m | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2024-04-04 | Kutzkey Tim Director · By The Column Group III-A, LP | Bought | $1.6m102.7k shares |
| 2024-04-04 | COLUMN GROUP III-A, LP +2 10% owner · By The Column Group III-A, LP | Bought | $1.6m102.7k shares |
| 2024-04-04 | Kutzkey Tim Director · By The Column Group III, LP | Bought | $1.4m90.9k shares |
| 2024-04-04 | COLUMN GROUP III-A, LP +2 10% owner · By The Column Group III, LP | Bought | $1.4m90.9k shares |
| 2024-04-04 | Parker Craig C Chief Executive Officer, director | Bought | —1.5k shares |
| 2024-04-04 | Williams Charles O CFO and COO | Bought | —1.5k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| Nantahala Capital Management, LLC 0.21% of their portfolio | 374.4k $4.1m | New |
| RA CAPITAL MANAGEMENT, L.P. 0.04% of their portfolio | 282.6k $3.1m | New |
| ARMISTICE CAPITAL, LLC 0.05% of their portfolio | 190.0k $2.1m | New |
| STEMPOINT CAPITAL LP 0.46% of their portfolio | 143.5k $1.6m | New |
| Euclidean Capital LLC 0.12% of their portfolio | 87.7k $960.3k | Unchanged |
| Stonepine Capital Management, LLC 0.66% of their portfolio | 66.1k $723.6k | New |
| CVI Holdings, LLC 0.61% of their portfolio | 64.9k $710.7k | New |
| VANGUARD GROUP INC 0.00% of their portfolio | 60.8k $666.1k | Reduced -676 |
| ArrowMark Colorado Holdings LLC 0.01% of their portfolio | 55.1k $603.6k | Unchanged |
| Board of Trustees of The Leland Stanford Junior University 0.04% of their portfolio | 52.1k $570.8k | Unchanged |
| MORGAN STANLEY 0.00% of their portfolio | 35.2k $385.6k | Reduced -70.4k |
| Alyeska Investment Group, L.P. 0.00% of their portfolio | 20.4k $223.1k | Unchanged |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 18.7k $204.9k | Added +7.2k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 12.4k $136.1k | Reduced -1.3k |
| UBS Group AG 0.00% of their portfolio | 12.0k $131.7k | New |
| BlackRock Inc. 0.00% of their portfolio | 5.7k $62.2k | Added +3.3k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 338 $4.0k | Added +180 |
| WOLVERINE ASSET MANAGEMENT LLC 0.00% of their portfolio | 281 $3.1k | Unchanged |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 20 $219 | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 14 $154 | Added +8 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio | 0 $0 | Unchanged |