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Craig C. Parker

SRZN
CHIEF EXECUTIVE OFFICER · SURROZEN, INC./DE · CIK 0001526064
FILING MIX · LIFETIME75%/25%
BUYS
30
SELLS
10
TOTAL VALUE
$207.1K
COMPANIES
1
ACTIVE SINCE
Aug 2021
HOLDINGS NOW
18,175
AVG SELL PX
$33.33
TRADE KIND
SHOWING 40 / 40
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
6 backtested trades · 8 horizons · 4 pending
Forward-return performance of every backtestable P/S trade by Craig C. Parker, 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
7d6+16.67%-3.25%+1.29%-4.55%-3.12%—
14d6+16.67%-16.77%-1.64%-15.14%-15.01%—
30d6+16.67%-12.83%-0.35%-11.39%-11.39%—
60d6+100.00%-2.59%+3.01%-5.61%-2.17%—
90d6(1 pending)+0.00%-3.00%+7.83%-10.83%-10.83%—
180d6(1 pending)+0.00%-2.82%+11.53%-14.35%-14.35%—
1y6(1 pending)+0.00%-3.00%-0.27%-2.74%-2.74%—
2y6(1 pending)+100.00%+145.98%+29.45%+116.53%+116.53%—
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 · 18,175 shares · as of Jun 15, 2026
0101,250202,500303,750405,00020222023202420252026SHARES 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 · 30 buys / 10 sellsCOVERAGE · 20 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
1,622$8.11$13.2K18,175Jun 15, 2026Jun 16, 2026 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Executive Officer
4,524$33.33$150.8K16,553May 4, 2026May 5, 2026 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
Chief Executive Officer
12,500——21,077May 1, 2026May 5, 2026 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Executive Officer
12,500——12,500May 1, 2026May 5, 2026 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
242,200——242,200Feb 17, 2026Feb 18, 2026 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
242,200——242,200Feb 17, 2026Feb 18, 2026 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
1,553$8.11$12.6K8,577Dec 15, 2025Dec 16, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
400$8.06$3.2K7,024Jun 13, 2025Jun 16, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
75,000——75,000May 1, 2025May 5, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
25,000——25,000May 1, 2025May 5, 2025 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Executive Officer
1,474——0Mar 24, 2025Mar 25, 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
Chief Executive Officer
5,712——0Mar 24, 2025Mar 25, 2025 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Executive Officer
5,712——0Mar 24, 2025Mar 25, 2025 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Executive Officer
1,603——0Mar 24, 2025Mar 25, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
100,000——100,000Jan 17, 2025Jan 22, 2025 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
400$5.67$2.3K5,824Jun 14, 2024Jun 18, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
43,000——43,000May 1, 2024May 2, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
43,000——43,000Apr 24, 2024Apr 26, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
Chief Executive Officer
5,712——5,712Apr 4, 2024Apr 8, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
Chief Executive Officer
1,474——1,474Apr 4, 2024Apr 8, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
Chief Executive Officer
1,474——1,474Apr 4, 2024Apr 8, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
Chief Executive Officer
5,712——5,712Apr 4, 2024Apr 8, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASE
Chief Executive Officer
1,603——1,603Apr 4, 2024Apr 8, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
33——33Jan 29, 2024Feb 7, 2024 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
2,046$5.67$11.6K2,046Dec 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
405,000——405,000Mar 1, 2023Mar 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
PURCHASEGRANT
Stock grant
181,270——181,270Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Executive Officer
315,310——0Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
35,987——35,987Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Executive Officer
35,987——0Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
315,310——315,310Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Executive Officer
181,270——0Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
SALE
Chief Executive Officer
2,065——0Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
2,065——2,065Oct 10, 2022Oct 12, 2022 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
370,000——370,000Mar 1, 2022Mar 3, 2022 ↗View →
SRZN
SURROZEN, INC./DE
PURCHASEGRANT
Stock grant
183,335——183,335Aug 12, 2021Aug 16, 2021 ↗View →
Other insiders · SRZN
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About this filer
CIK 0001526064
ROLE
Chief Executive Officer
PRIMARY
SRZN
COMPANIES
1
ACTIVE SINCE
Aug 2021
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