EcoR1 Capital, LLC
CIK: 0001587114
10% Owner
Primary company: Zymeworks Inc. (ZYME)
EcoR1 Capital, LLC is a corporate insider at Zymeworks Inc. (ZYME) filing SEC Form 4 transactions. 76 transactions across 12 companies, totaling $392,644,073 in purchases and $141,326,373 in sales. Source: SEC EDGAR.
Companies
Transaction History
Source: SEC EDGAR Form 4 insider transaction filings.
Company | Type | Shares | Price | Value | Shares After | Date | SEC |
|---|---|---|---|---|---|---|---|
| Purchase | 507,407 | $9.35 | $4.74M | 1,552,000 | 5/7/2026 Filed: 5/7/2026 | Filing → | |
First Tracks Biotherapeutics, Inc. TRAX | Sale | 4,705,575 | $13.81 | $65.00M | 3,174,519 | 4/20/2026 Filed: 4/22/2026 | Filing → |
Adaptimmune Therapeutics PLC ADAP | Sale | 27,433,338 | $0.10 | $2.80M | 100,371,882 | 7/30/2025 Filed: 7/30/2025 | Filing → |
Adaptimmune Therapeutics PLC ADAP | Sale | 2,687,460 | $0.10 | $272K | 127,805,220 | 7/29/2025 Filed: 7/30/2025 | Filing → |
Adaptimmune Therapeutics PLC ADAP | Sale | 33,931,740 | $0.11 | $3.82M | 130,492,680 | 7/28/2025 Filed: 7/30/2025 | Filing → |
iTeos Therapeutics, Inc. ITOS | Purchase | 3,300,000 | $8.00 | $26.40M | 10,688,978 | 5/15/2025 Filed: 5/16/2025 | Filing → |
iTeos Therapeutics, Inc. ITOS | Purchase | 1,658,978 | $7.41 | $12.29M | 7,388,978 | 5/14/2025 Filed: 5/16/2025 | Filing → |
PROTHENA CORP PUBLIC LTD CO PRTA | Sale | 1,984,053 | $7.64 | $15.16M | 5,304,596 | 5/6/2025 Filed: 5/6/2025 | Filing → |
PROTHENA CORP PUBLIC LTD CO PRTA | Sale | 977,693 | $8.11 | $7.93M | 7,288,649 | 5/5/2025 Filed: 5/6/2025 | Filing → |
PROTHENA CORP PUBLIC LTD CO PRTA | Sale | 3,317,938 | $8.36 | $27.74M | 8,266,342 | 5/2/2025 Filed: 5/6/2025 | Filing → |
Zymeworks Inc. ZYME | Purchase | 19,748 | $13.87 | $274K | 15,720,161 | 1/17/2025 Filed: 1/21/2025 | Filing → |
Zymeworks Inc. ZYME | Purchase | 121,681 | $13.88 | $1.69M | 15,700,413 | 1/16/2025 Filed: 1/21/2025 | Filing → |
Zymeworks Inc. ZYME | Purchase | 39,029 | $14.01 | $547K | 15,578,732 | 1/15/2025 Filed: 1/15/2025 | Filing → |
Zymeworks Inc. ZYME | Purchase | 54,500 | $13.56 | $739K | 15,539,703 | 1/14/2025 Filed: 1/15/2025 | Filing → |
Zymeworks Inc. ZYME | Purchase | 74,125 | $13.39 | $993K | 15,485,203 | 1/13/2025 Filed: 1/15/2025 | Filing → |
Zymeworks Inc. ZYME | Purchase | 204,098 | $13.13 | $2.68M | 15,411,078 | 1/10/2025 Filed: 1/10/2025 | Filing → |
Zymeworks Inc. ZYME | Purchase | 21,021 | $14.07 | $296K | 15,206,980 | 1/8/2025 Filed: 1/10/2025 | Filing → |
Zymeworks Inc. ZYME | Purchase | 157,880 | $14.78 | $2.33M | 15,185,959 | 1/2/2025 Filed: 1/2/2025 | Filing → |
Zymeworks Inc. ZYME | Purchase | 146,501 | $14.57 | $2.13M | 15,028,079 | 12/31/2024 Filed: 1/2/2025 | Filing → |
Zymeworks Inc. ZYME | Purchase | 58,988 | $14.47 | $853K | 14,881,578 | 12/30/2024 Filed: 1/2/2025 | Filing → |
Type
Purchase
Shares
507,407
Price
$9.35
Value
$4.74M
First Tracks Biotherapeutics, Inc.
TRAX
Type
Sale
Shares
4,705,575
Price
$13.81
Value
$65.00M
Adaptimmune Therapeutics PLC
ADAP
Type
Sale
Shares
27,433,338
Price
$0.10
Value
$2.80M
Adaptimmune Therapeutics PLC
ADAP
Type
Sale
Shares
2,687,460
Price
$0.10
Value
$272K
Adaptimmune Therapeutics PLC
ADAP
Type
Sale
Shares
33,931,740
Price
$0.11
Value
$3.82M
iTeos Therapeutics, Inc.
ITOS
Type
Purchase
Shares
3,300,000
Price
$8.00
Value
$26.40M
iTeos Therapeutics, Inc.
ITOS
Type
Purchase
Shares
1,658,978
Price
$7.41
Value
$12.29M
PROTHENA CORP PUBLIC LTD CO
PRTA
Type
Sale
Shares
1,984,053
Price
$7.64
Value
$15.16M
PROTHENA CORP PUBLIC LTD CO
PRTA
Type
Sale
Shares
977,693
Price
$8.11
Value
$7.93M
PROTHENA CORP PUBLIC LTD CO
PRTA
Type
Sale
Shares
3,317,938
Price
$8.36
Value
$27.74M
Zymeworks Inc.
ZYME
Type
Purchase
Shares
19,748
Price
$13.87
Value
$274K
Zymeworks Inc.
ZYME
Type
Purchase
Shares
121,681
Price
$13.88
Value
$1.69M
Zymeworks Inc.
ZYME
Type
Purchase
Shares
39,029
Price
$14.01
Value
$547K
Zymeworks Inc.
ZYME
Type
Purchase
Shares
54,500
Price
$13.56
Value
$739K
Zymeworks Inc.
ZYME
Type
Purchase
Shares
74,125
Price
$13.39
Value
$993K
Zymeworks Inc.
ZYME
Type
Purchase
Shares
204,098
Price
$13.13
Value
$2.68M
Zymeworks Inc.
ZYME
Type
Purchase
Shares
21,021
Price
$14.07
Value
$296K
Zymeworks Inc.
ZYME
Type
Purchase
Shares
157,880
Price
$14.78
Value
$2.33M
Zymeworks Inc.
ZYME
Type
Purchase
Shares
146,501
Price
$14.57
Value
$2.13M
Zymeworks Inc.
ZYME
Type
Purchase
Shares
58,988
Price
$14.47
Value
$853K
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