MarketPeel
Insider Trading Intelligence
Pricing
…
CW

Charles O. Williams

SRZN
CHIEF OPERATING OFFICER · SURROZEN, INC./DE · CIK 0001325818
FILING MIX · LIFETIME72%/28%
BUYS
33
SELLS
13
TOTAL VALUE
$177.3K
COMPANIES
1
ACTIVE SINCE
Aug 2021
HOLDINGS NOW
18,237
AVG SELL PX
$24.98
TRADE KIND
SHOWING 46 / 46
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
3 backtested trades · 8 horizons · 7 pending
Forward-return performance of every backtestable P/S trade by Charles O. Williams, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d3+100.00%-16.32%+0.70%-17.02%-11.66%—
14d3+100.00%-15.76%+0.95%-16.71%-15.76%—
30d3+66.67%-10.12%+0.38%-6.42%-6.42%—
60d3+66.67%-4.37%-0.35%-4.02%-22.81%—
90d3(1 pending)+50.00%+6.22%-6.62%+12.84%+12.84%—
180d3(1 pending)+50.00%-9.09%+6.71%-15.80%-15.80%—
1y3(2 pending)+0.00%+26.62%+15.76%+10.86%+10.86%—
2y3(3 pending)——————
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
SRZN · 18,237 shares · as of Jun 15, 2026
031,25062,50093,750125,00020222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 33 buys / 13 sellsCOVERAGE · 20 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
1,666$8.11$13.5K18,237Jun 15, 2026Jun 16, 2026 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Operating Officer
2,036$33.33$67.9K16,571May 4, 2026May 5, 2026 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Operating Officer
5,625——5,625May 1, 2026May 5, 2026 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
Chief Operating Officer
5,625——18,607May 1, 2026May 5, 2026 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
102,900——102,900Feb 17, 2026Feb 18, 2026 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
102,900——102,900Feb 17, 2026Feb 18, 2026 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
500——500Jan 23, 2026Jan 26, 2026 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Operating Officer
1,566$19.87$31.1K12,982Jan 5, 2026Jan 6, 2026 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Operating Officer
3,500——0Jan 2, 2026Jan 6, 2026 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
Chief Operating Officer
3,500——14,548Jan 2, 2026Jan 6, 2026 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
1,666$8.11$13.5K11,048Dec 15, 2025Dec 16, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
400$8.06$3.2K9,382Jun 13, 2025Jun 16, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
11,250——11,250May 1, 2025May 5, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
33,750——33,750May 1, 2025May 5, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
1,474——1,474Mar 24, 2025Mar 25, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
1,603——1,603Mar 24, 2025Mar 25, 2025 ↗View →
SRZN
SURROZEN, INC./DE
SALE
CFO and COO
5,712——0Mar 24, 2025Mar 25, 2025 ↗View →
SRZN
SURROZEN, INC./DE
SALE
CFO and COO
5,712——0Mar 24, 2025Mar 25, 2025 ↗View →
SRZN
SURROZEN, INC./DE
SALE
CFO and COO
1,603——0Mar 24, 2025Mar 25, 2025 ↗View →
SRZN
SURROZEN, INC./DE
SALE
CFO and COO
1,474——0Mar 24, 2025Mar 25, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
45,000——45,000Jan 17, 2025Jan 22, 2025 ↗View →
SRZN
SURROZEN, INC./DE
SALE
CFO and COO
1,181$17.37$20.5K8,982Jan 3, 2025Jan 6, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
CFO and COO
3,500——10,163Jan 2, 2025Jan 6, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
400$5.67$2.3K5,863Jun 14, 2024Jun 18, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
27,000——27,000May 1, 2024May 2, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
13,000——13,000Apr 24, 2024Apr 26, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
7,000——7,000Apr 24, 2024Apr 26, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
CFO and COO
5,712——5,712Apr 4, 2024Apr 8, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
CFO and COO
1,474——1,474Apr 4, 2024Apr 8, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
CFO and COO
1,603——1,603Apr 4, 2024Apr 8, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
CFO and COO
5,712——5,712Apr 4, 2024Apr 8, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
CFO and COO
1,474——1,474Apr 4, 2024Apr 8, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
2,085$5.67$11.8K2,085Dec 15, 2023Dec 18, 2023 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
25,000$0.38$9.5K34,578Jun 15, 2023Jun 19, 2023 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
125,000——125,000Feb 1, 2023Feb 2, 2023 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
9,578$0.41$3.9K9,578Dec 15, 2022Dec 19, 2022 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Financial Officer
77,972——0Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Financial Officer
2,433——0Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
12,164——12,164Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Financial Officer
97,676——0Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Financial Officer
12,164——0Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
97,676——97,676Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
77,972——77,972Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
2,433——2,433Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
125,000——125,000Mar 1, 2022Mar 3, 2022 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
14,597——14,597Aug 12, 2021Aug 16, 2021 ↗View →
Other insiders · SRZN
Loading peer insiders…
About this filer
CIK 0001325818
ROLE
Chief Operating Officer
PRIMARY
SRZN
COMPANIES
1
ACTIVE SINCE
Aug 2021
MARKETPEEL · /INSIDER/0001325818DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback