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Insider Trading Intelligence
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KD

Karen A. Dawes

RGEN
DIRECTOR · REPLIGEN CORP · CIK 0001261506
FILING MIX · LIFETIME28%/72%
BUYS
37
SELLS
94
TOTAL VALUE
$19.07M
COMPANIES
3
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
197,579
AVG SELL PX
$138.32
TRADE KIND
SHOWING 131 / 131
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
80 backtested trades · 8 horizons · 2 pending
Forward-return performance of every backtestable P/S trade by Karen A. Dawes, 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
7d80+35.00%+1.60%+0.12%+1.48%+3.18%2.20
14d80+38.75%+3.01%+0.82%+2.19%+4.55%2.16
30d80+60.00%+3.13%-0.47%+3.60%+2.09%2.03
60d80+48.75%+4.96%+2.50%+2.46%+1.14%1.01
90d80+35.00%+4.60%+3.94%+0.66%-3.87%0.24
180d80+58.75%-4.17%+3.48%-7.65%-27.36%-2.30
1y80(1 pending)+64.56%+2.27%+5.38%-3.11%-13.02%-0.91
2y80(1 pending)+64.56%-17.52%+14.91%-32.43%-37.89%-11.71
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
RGEN · 92,816 shares · as of May 14, 2026
030,38960,77891,167121,556202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 37 buys / 94 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
995——92,816May 14, 2026May 18, 2026 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
2,239——2,239May 14, 2026May 18, 2026 ↗View →
RGEN
REPLIGEN CORP
SALE
275$161.00$44.3K91,821Dec 17, 2025Dec 18, 2025 ↗View →
BRNS
BARINTHUS BIOTHERAPEUTICS PLC.
PURCHASEGRANT
Stock grant
20,174——20,174Jun 10, 2025Jun 11, 2025 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
1,800——1,800May 15, 2025May 19, 2025 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
973——92,096May 15, 2025May 19, 2025 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
2,953——0Jun 14, 2024Jun 14, 2024 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
2,953$67.71$199.9K88,170Jun 14, 2024Jun 14, 2024 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
803——88,170May 16, 2024May 20, 2024 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
1,576——1,576May 16, 2024May 20, 2024 ↗View →
BRNS
BARINTHUS BIOTHERAPEUTICS PLC.
PURCHASEGRANT
Stock grant
19,516——19,516May 10, 2024May 14, 2024 ↗View →
RGEN
REPLIGEN CORP
SALE
1,000$193.35$193.3K87,367Feb 27, 2024Feb 28, 2024 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
4,626$42.07$194.6K88,367Feb 27, 2024Feb 28, 2024 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
4,626——0Feb 27, 2024Feb 28, 2024 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
7,392$18.12$133.9K84,591Aug 29, 2023Aug 30, 2023 ↗View →
RGEN
REPLIGEN CORP
SALE
850$171.38$145.7K83,741Aug 29, 2023Aug 30, 2023 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
7,392——0Aug 29, 2023Aug 30, 2023 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
798——77,199May 18, 2023May 22, 2023 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
1,730——1,730May 18, 2023May 22, 2023 ↗View →
RGEN
REPLIGEN CORP
SALE
775$227.17$176.1K76,401Sep 9, 2022Sep 9, 2022 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
1,565——1,565May 26, 2022May 31, 2022 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
644——77,176May 26, 2022May 31, 2022 ↗View →
RGEN
REPLIGEN CORP
SALE
1,845$151.14$278.9K79,149May 25, 2022May 26, 2022 ↗View →
RGEN
REPLIGEN CORP
SALE
2,576$149.18$384.3K88,671May 25, 2022May 26, 2022 ↗View →
RGEN
REPLIGEN CORP
SALE
1,875$152.14$285.3K77,274May 25, 2022May 26, 2022 ↗View →
RGEN
REPLIGEN CORP
SALE
742$152.84$113.4K76,532May 25, 2022May 26, 2022 ↗View →
RGEN
REPLIGEN CORP
SALE
7,677$150.19$1.15M80,994May 25, 2022May 26, 2022 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
4,783——0Nov 10, 2021Nov 12, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
488$265.27$129.5K92,351Nov 10, 2021Nov 12, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
14$271.28$3.8K91,247Nov 10, 2021Nov 12, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
4,783$26.12$124.9K96,030Nov 10, 2021Nov 12, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
486$266.72$129.6K91,865Nov 10, 2021Nov 12, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
255$269.94$68.8K91,261Nov 10, 2021Nov 12, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
336$264.21$88.8K92,839Nov 10, 2021Nov 12, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
1,038$262.28$272.2K94,294Nov 10, 2021Nov 12, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
236$261.10$61.6K95,332Nov 10, 2021Nov 12, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
349$267.75$93.4K91,516Nov 10, 2021Nov 12, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
462$259.75$120.0K95,568Nov 10, 2021Nov 12, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
1,119$263.23$294.6K93,175Nov 10, 2021Nov 12, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
283$306.49$86.7K91,247Nov 2, 2021Nov 4, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
251$301.20$75.6K93,332Nov 2, 2021Nov 4, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
446$301.97$134.7K92,886Nov 2, 2021Nov 4, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
700$305.91$214.1K91,530Nov 2, 2021Nov 4, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
124$304.23$37.7K92,230Nov 2, 2021Nov 4, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
64$299.02$19.1K93,583Nov 2, 2021Nov 4, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
532$303.48$161.5K92,354Nov 2, 2021Nov 4, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
13$290.02$3.8K93,908Sep 14, 2021Sep 15, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
101$294.06$29.7K93,782Sep 14, 2021Sep 15, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
108$295.02$31.9K93,674Sep 14, 2021Sep 15, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
27$295.82$8.0K93,647Sep 14, 2021Sep 15, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
25$292.34$7.3K93,883Sep 14, 2021Sep 15, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
851$285.44$242.9K93,921Sep 1, 2021Sep 2, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
1,107$284.64$315.1K94,772Sep 1, 2021Sep 2, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
405$282.53$114.4K96,540Sep 1, 2021Sep 2, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
661$283.56$187.4K95,879Sep 1, 2021Sep 2, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
196$281.68$55.2K96,945Sep 1, 2021Sep 2, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
3,459$38.76$134.1K97,380Sep 1, 2021Sep 2, 2021 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
3,459——0Sep 1, 2021Sep 2, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
239$280.27$67.0K97,141Sep 1, 2021Sep 2, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
302$257.66$77.8K95,061Aug 18, 2021Aug 19, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
388$259.93$100.9K94,039Aug 18, 2021Aug 19, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
78$260.91$20.4K93,961Aug 18, 2021Aug 19, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
634$258.91$164.1K94,427Aug 18, 2021Aug 19, 2021 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
40$262.31$10.5K93,921Aug 18, 2021Aug 19, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
8,580$254.09$2.18M97,788Aug 17, 2021Aug 19, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
2,231$255.07$569.1K95,557Aug 17, 2021Aug 19, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
924$251.15$232.1K111,953Aug 17, 2021Aug 19, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
920$251.92$231.8K111,033Aug 17, 2021Aug 19, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
194$256.43$49.7K95,363Aug 17, 2021Aug 19, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
4,665$253.34$1.18M106,368Aug 17, 2021Aug 19, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
288$200.01$57.6K117,174Jul 20, 2021Jul 22, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
2,877$202.29$582.0K113,491Jul 20, 2021Jul 22, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
806$201.37$162.3K116,368Jul 20, 2021Jul 22, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
614$203.11$124.7K112,877Jul 20, 2021Jul 22, 2021 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
2,929$41.19$120.6K118,982Jul 13, 2021Jul 22, 2021 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
2,929——0Jul 13, 2021Jul 22, 2021 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
1,520$202.23$307.4K117,462Jul 13, 2021Jul 15, 2021 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
2,929$41.19$120.6K118,982Jul 13, 2021Jul 15, 2021 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
2,929——0Jul 13, 2021Jul 15, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
630$202.29$127.4K117,911Jul 13, 2021Jul 22, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
444$203.09$90.2K117,467Jul 13, 2021Jul 22, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
5$204.02$1.0K117,462Jul 13, 2021Jul 22, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
441$201.27$88.8K118,541Jul 13, 2021Jul 22, 2021 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
1,522——1,522May 13, 2021May 17, 2021 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
604——116,053May 13, 2021May 17, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
15,000——0May 11, 2021May 13, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
285$176.85$50.4K115,449May 11, 2021May 13, 2021 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
15,000$3.22$48.3K115,734May 11, 2021May 13, 2021 ↗View →
RGEN
REPLIGEN CORP
SALE
8,217$115.76$951.2K103,302Jun 18, 2020Jun 22, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
2,568$116.56$299.3K100,734Jun 18, 2020Jun 22, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
2,677$113.58$304.1K116,762Jun 18, 2020Jun 22, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
5,243$114.49$600.3K111,519Jun 18, 2020Jun 22, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
10$135.91$1.4K119,946May 20, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
182$140.29$25.5K119,439May 20, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
282$139.40$39.3K119,621May 20, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
43$136.98$5.9K119,903May 20, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
180$140.62$25.3K120,113May 18, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
80$142.45$11.4K119,956May 18, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
122$139.32$17.0K120,293May 18, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
77$141.45$10.9K120,036May 18, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
269$138.60$37.3K120,415May 18, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
712$135.76$96.7K120,844May 18, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
160$136.92$21.9K120,684May 18, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
122$139.32$17.0K120,293May 18, 2020May 19, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
712$135.76$96.7K120,844May 18, 2020May 19, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
269$138.60$37.3K120,415May 18, 2020May 19, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
160$136.92$21.9K120,684May 18, 2020May 19, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
80$142.45$11.4K119,956May 18, 2020May 19, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
77$141.45$10.9K120,036May 18, 2020May 19, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
180$140.62$25.3K120,113May 18, 2020May 19, 2020 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
722——121,556May 13, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
1,761——1,761May 13, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
722——121,556May 13, 2020May 19, 2020 ↗View →
RGEN
REPLIGEN CORP
PURCHASEGRANT
Stock grant
1,761——1,761May 13, 2020May 19, 2020 ↗View →
ASRT
ASSERTIO HOLDINGS, INC.
SALE
15,834$0.79$12.5K84,589May 8, 2020May 11, 2020 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
11,800$3.30$38.9K120,834Apr 21, 2020Apr 22, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
11,800——0Apr 21, 2020Apr 22, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
11,800——0Apr 21, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
11,800$3.30$38.9K120,834Apr 21, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
8,200——11,800Apr 20, 2020Apr 22, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
3,202$104.98$336.1K118,032Apr 20, 2020Apr 22, 2020 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
8,200$3.30$27.1K121,234Apr 20, 2020Apr 22, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
8,998$104.42$939.6K109,034Apr 20, 2020Apr 22, 2020 ↗View →
RGEN
REPLIGEN CORP
PURCHASE
8,200$3.30$27.1K121,234Apr 20, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
8,200——11,800Apr 20, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
8,998$104.42$939.6K109,034Apr 20, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
3,202$104.98$336.1K118,032Apr 20, 2020May 21, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
300$101.06$30.3K116,734Feb 21, 2020Feb 24, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
945$99.85$94.4K115,789Feb 21, 2020Feb 24, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
1,849$97.52$180.3K113,034Feb 21, 2020Feb 24, 2020 ↗View →
RGEN
REPLIGEN CORP
SALE
906$99.12$89.8K114,883Feb 21, 2020Feb 24, 2020 ↗View →
Other insiders · RGEN
Loading peer insiders…
About this filer
CIK 0001261506
ROLE
Director
PRIMARY
RGEN
COMPANIES
3
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001261506DATA · 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.

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