InsidersTradesSigma
Total declarations
Companies
▲ Purchases (36 ops.)
▼ Sales (13 ops.)
Insider track record
OtherDisclosed buys
36
Disclosed sells
13
T+90 hit rate
33%
T+90 mean return
-7.3%
Across 6 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Explore the complete record of transactions filed by EcoR1 Capital, LLC. Insider active across 12 companies, notably First Tracks Biotherapeutics, Inc.. Aggregated, 59 reports have been recorded. Breakdown: 36 buys · 13 sells. Total volume traded: €289.5m. Activity tracked since 30 April 2021. The latest transaction was disclosed on 20 April 2026 (Cession). Regulator: SEC (Form 4). The full history is openly available.
Companies and markets linked to EcoR1 Capital, LLC
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations59 total
4,705,575 shares@ US$13.81349.35% mcap50.0% of flowCommon StockSEC:0000935836-26-000208:0
2,270,879 sharesCommon StockSEC:0000935836-26-000031:0
33,931,740 shares@ US$0.1125100.0% of flowOrdinary SharesSEC:0000935836-25-000476:0
5,086,480 shares0.0% of flowCommon StockSEC:0000935836-25-000438:0
49,502 shares@ US$11.43081.0% of flowCommon StockSEC:0000935836-25-000389:0
Canonical exit: 13 Aug 2025 (T+90)
1,658,978 shares@ US$7.4055100.0% of flowCommon StockSEC:0000935836-25-000384:0
Canonical exit: 12 Aug 2025 (T+90)
3,317,938 shares@ US$8.362128.5% of flowOrdinary SharesSEC:0000935836-25-000309:0
73,953 shares@ US$11.16371.4% of flowCommon StockSEC:0000935836-25-000292:0
Canonical exit: 15 Jul 2025 (T+90)
120,770 shares@ US$11.84212.4% of flowCommon StockSEC:0000935836-25-000266:0
Canonical exit: 2 Jul 2025 (T+90)
4,397 shares@ US$11.74850.1% of flowCommon StockSEC:0000935836-25-000259:0
Canonical exit: 29 Jun 2025 (T+90)
53,501 shares@ US$12.90541.2% of flowCommon StockSEC:0000935836-25-000253:0
Canonical exit: 23 Jun 2025 (T+90)
73,476 shares@ US$12.92781.6% of flowCommon StockSEC:0000935836-25-000245:0
Canonical exit: 18 Jun 2025 (T+90)
56,277 shares@ US$12.23351.2% of flowCommon StockSEC:0000935836-25-000239:0
Canonical exit: 15 Jun 2025 (T+90)
320,690 shares@ US$11.49356.4% of flowCommon StockSEC:0000935836-25-000225:0
Canonical exit: 9 Jun 2025 (T+90)
121,681 shares@ US$13.8853.1% of flowCommon StockSEC:0000935836-25-000074:0
Canonical exit: 16 Apr 2025 (T+90)
74,125 shares@ US$13.39461.8% of flowCommon StockSEC:0000935836-25-000067:0
Canonical exit: 13 Apr 2025 (T+90)
21,021 shares@ US$14.0730.5% of flowCommon StockSEC:0000935836-25-000048:0
Canonical exit: 8 Apr 2025 (T+90)
58,988 shares@ US$14.46611.5% of flowCommon StockSEC:0000935836-25-000007:0
Canonical exit: 30 Mar 2025 (T+90)
65,184 shares@ US$12.91823.2% of flowCommon StockSEC:0000935836-25-000008:0
Canonical exit: 30 Mar 2025 (T+90)
11,958 shares@ US$14.12410.3% of flowCommon StockSEC:0000935836-24-000785:0
Canonical exit: 24 Mar 2025 (T+90)
298,818 shares@ US$13.52897.4% of flowCommon StockSEC:0000935836-24-000780:0
Canonical exit: 19 Mar 2025 (T+90)
8,036,688 sharesCommon StockSEC:0000935836-24-000771:0
1,494,558 shares@ US$3.2759100.0% of flowCommon StockSEC:0000935836-24-000649:0
273,972 shares@ US$36.5036.4% of flowCommon StockSEC:0000935836-24-000532:0
Canonical exit: 12 Nov 2024 (T+90)
1,142,857 shares@ US$17.5025.2% of flowCommon StockSEC:0000895345-24-000172:0
25 of 59 declarations
About EcoR1 Capital, LLC
EcoR1 Capital, LLC is a declarant associated with the listed companies, with director roles at Zymeworks Inc., Anaptysbio, INC and AKTIS ONCOLOGY, INC. Across the 38 filings, the 38 sampled filings cover the period from 2021-05-04 to 2026-04-22, with EUR 128347075 in buys and EUR 103843311 in sells, and the modal transaction nature is Acquisition.
