MarketPeel
Insider Trading Intelligence
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DR

David Efraim Rosen

COLL
10% OWNER · COLLEGIUM PHARMACEUTICAL, INC · CIK 0001898677
FILING MIX · LIFETIME36%/64%
BUYS
16
SELLS
28
TOTAL VALUE
$1.24B
COMPANIES
5
ACTIVE SINCE
Jul 2022
HOLDINGS NOW
27,123,105
AVG SELL PX
$222.24
TRADE KIND
SHOWING 44 / 44
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
36 backtested trades · 8 horizons · 30 pending
Forward-return performance of every backtestable P/S trade by David Efraim Rosen, 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
7d36+86.11%+0.84%+1.31%-0.47%-5.58%-0.21
14d36+88.89%+0.51%+1.96%-1.45%-8.29%-0.59
30d36+16.67%+16.30%+3.42%+12.88%+15.42%3.88
60d36+16.67%+14.06%+3.82%+10.25%+17.63%3.46
90d36+11.11%+20.31%+5.08%+15.23%+30.86%3.50
180d36+2.78%+11.99%+9.99%+2.00%+16.50%0.49
1y36(4 pending)+3.13%+12.58%+18.90%-6.31%+17.40%-0.81
2y36(26 pending)+10.00%-75.17%+52.56%-127.73%-132.40%—
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
Not enough transaction history to chart holdings.
Trading cadence · quarterly flow
BUY ● SELL ●
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
FLOW · 16 buys / 28 sellsCOVERAGE · 14 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
HRTX
HERON THERAPEUTICS, INC. /DE/
PURCHASE
946,100——30,046,828Oct 15, 2025Oct 17, 2025 ↗View →
HRTX
HERON THERAPEUTICS, INC. /DE/
SALE
94,610——0Oct 15, 2025Oct 17, 2025 ↗View →
COLL
COLLEGIUM PHARMACEUTICAL, INC
SALE
25,000$37.85$946.3K3,132,743Aug 13, 2025Aug 15, 2025 ↗View →
HRTX
HERON THERAPEUTICS, INC. /DE/
PURCHASE
2,387,225$1.50$3.58M29,100,728Aug 8, 2025Aug 12, 2025 ↗View →
HRTX
HERON THERAPEUTICS, INC. /DE/
PURCHASE
94,610$15.00$1.42M94,610Aug 8, 2025Aug 12, 2025 ↗View →
HRTX
HERON THERAPEUTICS, INC. /DE/
PURCHASE
—$33,250,000.00——Aug 8, 2025Aug 12, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
2,365$293.34$693.7K5,902,655Jun 27, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
1,137$298.14$339.0K5,734,970Jun 27, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
51,810$295.62$15.32M5,838,555Jun 27, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
76,545$296.38$22.69M5,762,010Jun 27, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
12,290$294.65$3.62M5,890,365Jun 27, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
1,281,839——4,453,131Jun 27, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
7,950$292.82$2.33M5,905,020Jun 27, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
25,903$297.70$7.71M5,736,107Jun 27, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
33,121$292.19$9.68M5,945,994Jun 26, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
1,321$289.46$382.4K6,013,866Jun 26, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
15,824$291.08$4.61M5,979,115Jun 26, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
32,924$293.34$9.66M5,913,070Jun 26, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
18,927$290.19$5.49M5,994,939Jun 26, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
100$294.00$29.4K5,912,970Jun 26, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
44,343$288.55$12.80M6,079,157Jun 25, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
100$297.14$29.7K6,015,187Jun 25, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
13,973$294.47$4.11M6,020,244Jun 25, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
4,957$295.18$1.46M6,015,287Jun 25, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
200$290.49$58.1K6,072,528Jun 25, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
16,759$292.50$4.90M6,055,769Jun 25, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
21,552$293.63$6.33M6,034,217Jun 25, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
6,429$289.25$1.86M6,072,728Jun 25, 2025Jun 27, 2025 ↗View →
TLN
TALEN ENERGY CORP
SALE
351,607——6,123,500Dec 13, 2024Dec 16, 2024 ↗View →
TLN
TALEN ENERGY CORP
SALE
4,893,507$204.35$1000.00M6,475,107Dec 13, 2024Dec 16, 2024 ↗View →
MREO
MEREO BIOPHARMA GROUP PLC
PURCHASEGRANT
Stock grant
1,754,350$3.99$7.00M15,307,347Jun 17, 2024Jun 17, 2024 ↗View →
TXMD
THERAPEUTICSMD, INC.
PURCHASEGRANT
Stock grant
877,192$2.28$2.00M2,946,908Nov 15, 2023Nov 15, 2023 ↗View →
TXMD
THERAPEUTICSMD, INC.
PURCHASEGRANT
Stock grant
312,525$3.68$1.15M2,069,716Jun 28, 2023Jun 29, 2023 ↗View →
TXMD
THERAPEUTICSMD, INC.
SALE
29,000$1,333.00$38.66M0Dec 30, 2022Jan 3, 2023 ↗View →
TXMD
THERAPEUTICSMD, INC.
SALE
29,000$1,333.00$38.66M0Dec 30, 2022Feb 22, 2023 ↗View →
TXMD
THERAPEUTICSMD, INC.
PURCHASE
14,825$6.09$90.3K1,757,191Dec 9, 2022Dec 12, 2022 ↗View →
TXMD
THERAPEUTICSMD, INC.
PURCHASE
300$5.83$1.7K1,742,366Dec 8, 2022Dec 9, 2022 ↗View →
TXMD
THERAPEUTICSMD, INC.
PURCHASE
20,113$5.66$113.9K1,742,066Dec 7, 2022Dec 9, 2022 ↗View →
TXMD
THERAPEUTICSMD, INC.
PURCHASE
7,000$1,000.00$7.00M29,000Oct 28, 2022Oct 31, 2022 ↗View →
TXMD
THERAPEUTICSMD, INC.
PURCHASE
7,000$1,000.00$7.00M22,000Sep 30, 2022Oct 3, 2022 ↗View →
TXMD
THERAPEUTICSMD, INC.
PURCHASE
15,000$822.21$12.33M15,000Jul 29, 2022Aug 1, 2022 ↗View →
TXMD
THERAPEUTICSMD, INC.
PURCHASE
565,000$4.72$2.67M1,721,953Jul 29, 2022Aug 1, 2022 ↗View →
TXMD
THERAPEUTICSMD, INC.
PURCHASE
17,688$6.03$106.7K1,156,953Jul 18, 2022Jul 19, 2022 ↗View →
TXMD
THERAPEUTICSMD, INC.
PURCHASE
64,892$5.56$360.8K1,139,265Jul 15, 2022Jul 19, 2022 ↗View →
Other insiders · COLL
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About this filer
CIK 0001898677
ROLE
10% Owner
PRIMARY
COLL
COMPANIES
5
ACTIVE SINCE
Jul 2022
MARKETPEEL · /INSIDER/0001898677DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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