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Caryn Peterson

GOSS
EVP, REGULATORY AFFAIRS · GOSSAMER BIO, INC. · CIK 0001857256
FILING MIX · LIFETIME56%/44%
BUYS
28
SELLS
22
TOTAL VALUE
$152.2K
COMPANIES
1
ACTIVE SINCE
Apr 2021
HOLDINGS NOW
0
AVG SELL PX
$6.09
TRADE KIND
SHOWING 50 / 50
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
3 backtested trades · 8 horizonsHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Caryn Peterson, 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+33.33%-0.24%+1.06%-1.30%+0.25%—
14d3+33.33%+3.98%+3.25%+0.73%-1.90%—
30d3+66.67%-12.68%+0.98%-13.65%-5.00%—
60d3+66.67%-12.71%+0.01%-12.72%+6.12%—
90d3+66.67%-24.59%+1.19%-25.77%-16.59%—
180d3+66.67%+6.68%+6.14%+0.54%-23.04%—
1y3+33.33%-15.28%+11.31%-26.59%-7.55%—
2y3+66.67%-37.82%+32.61%-70.43%-99.16%—
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
GOSS · 0 shares · as of Mar 19, 2026
0126,563253,125379,688506,25020222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 28 buys / 22 sellsCOVERAGE · 20 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
9,167——9,167Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
21,167——0Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
22,784——0Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
32,334——0Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
18,834——0Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
18,834——18,834Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
21,167——21,167Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
22,784——22,784Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
9,167——0Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
32,334——32,334Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
125,000——125,000Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
157,500——157,500Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
440,000——440,000Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
375,000——0Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
506,250——506,250Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
157,500——0Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
375,000——375,000Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
440,000——0Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
126,667——126,667Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
506,250——0Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
125,000——0Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
126,667——0Mar 19, 2026Mar 20, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
84,500——259,333Jan 2, 2026Jan 5, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
506,250——506,250Jan 2, 2026Jan 5, 2026 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
125,000——174,833Oct 1, 2025Oct 2, 2025 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
440,000——440,000Mar 4, 2025Mar 6, 2025 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
4,018$1.33$5.3K49,833Mar 18, 2024Mar 19, 2024 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
375,000——375,000Jan 2, 2024Jan 4, 2024 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
125,000——125,000Nov 20, 2023Nov 22, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
22,784——22,784May 5, 2023May 9, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
190,000——0May 5, 2023May 9, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
34,175——0May 5, 2023May 9, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
9,167——9,167May 5, 2023May 9, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
13,750——0May 5, 2023May 9, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
126,667——126,667May 5, 2023May 9, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
32,334——32,334May 5, 2023May 9, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
18,834——18,834May 5, 2023May 9, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
48,500——0May 5, 2023May 9, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
28,250——0May 5, 2023May 9, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
31,750——0May 5, 2023May 9, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
21,167——21,167May 5, 2023May 9, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
157,500——157,500Mar 20, 2023Mar 22, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
7,564$1.10$8.3K53,851Mar 16, 2023Mar 20, 2023 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
157,500——157,500Dec 7, 2022Dec 9, 2022 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
4,757$12.07$57.4K61,415Oct 24, 2022Oct 25, 2022 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
6,279$8.28$52.0K66,172Mar 16, 2022Mar 17, 2022 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
190,000——190,000Jan 6, 2022Jan 10, 2022 ↗View →
GOSS
GOSSAMER BIO, INC.
SALE
EVP, Regulatory Affairs
2,377$12.25$29.1K72,451Oct 25, 2021Oct 26, 2021 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
31,750——31,750Apr 16, 2021Apr 20, 2021 ↗View →
GOSS
GOSSAMER BIO, INC.
PURCHASEGRANT
Stock grant
10,820——74,828Apr 16, 2021Apr 20, 2021 ↗View →
Other insiders · GOSS
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About this filer
CIK 0001857256
ROLE
EVP, Regulatory Affairs
PRIMARY
GOSS
COMPANIES
1
ACTIVE SINCE
Apr 2021
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