Zymeworks Inc.
Total Trades
51
Buys
19
Sells
16
Largest Trade
N/A
Insiders
8
Institutional Funds
155
Inst. Value
$1M+
Activist Filings
50
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Josephson Neil | Chief Medical Offi… | BUY | $50K–$100K | 5K | $14.28 | Jan 12, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 155 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Rubric Capital Management LP | 5.8M | $1M+ | SH |
| PERCEPTIVE ADVISORS LLC | 3.3M | $1M+ | SH |
| Siren, L.L.C. | 1.7M | $1M+ | SH |
| Nextech Invest, Ltd. | 1.1M | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 1.1M | $1M+ | SH |
| STATE STREET CORP | 1.0M | $1M+ | SH |
| Capricorn Fund Managers Ltd | 1.0M | $1M+ | SH |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 700K | $1M+ | SH |
| Assenagon Asset Management S.A. | 647K | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 593K | $1M+ | SH |
| Prosight Management, LP | 530K | $1M+ | SH |
| Redmile Group, LLC | 492K | $1M+ | SH |
| Schonfeld Strategic Advisors LLC | 289K | $1M+ | SH |
| PICTON MAHONEY ASSET MANAGEMENT | 245K | $1M+ | SH |
| Hillsdale Investment Management Inc. | 238K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 221K | $1M+ | SH |
| RENAISSANCE TECHNOLOGIES LLC | 221K | $1M+ | SH |
| KENNEDY CAPITAL MANAGEMENT LLC | 146K | $1M+ | SH |
| JUPITER ASSET MANAGEMENT LTD | 126K | $1M+ | SH |
| HRT FINANCIAL LP | 121K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 13, 2026
7.7%
5.8M shares
SC 13G/A · Feb 12, 2026
3.4%
2.5M shares
SC 13D/A · Nov 19, 2025
30.7%
23.0M shares
SC 13G/A · Nov 14, 2025
2.7%
2.0M shares
SC 13G/A · Nov 14, 2025
4.9%
3.7M shares
SC 13G/A · Aug 14, 2025
5.6%
4.2M shares
SC 13G/A · Jul 16, 2025
4.8%
3.6M shares
SC 13D · Jun 27, 2025
30.7%
23.0M shares
SC 13G/A · May 7, 2025
5.8%
4.1M shares
SC 13D/A · Apr 8, 2025
25.4%
17.7M shares
SC 13D/A · Mar 17, 2025
24.2%
16.9M shares
SC 13D/A · Feb 18, 2025
22.8%
15.7M shares
SC 13G/A · Feb 15, 2025
7.0%
4.8M shares
SC 13D/A · Jan 14, 2025
22.4%
15.4M shares
SC 13D/A · Dec 24, 2024
21.3%
14.7M shares
SC 13G/A · Nov 15, 2024
7.2%
5.1M shares
Biotechnology Value Fund, L.P.
SC 13G/A · Nov 14, 2024
3.4%
2.4M shares
SC 13G · Nov 13, 2024
5.5%
3.9M shares
SC 13D · Feb 23, 2024
20.0%
14.1M shares
SC 13G/A · Feb 14, 2024
20.0%
14.1M shares
SC 13G/A · Feb 14, 2024
1.5%
1.1M shares
SC 13G/A · Feb 14, 2024
8.3%
5.8M shares
SC 13G/A · Feb 14, 2024
0.0%
27K shares
SC 13G · Jan 29, 2024
5.6%
3.9M shares
SC 13G/A · Jun 21, 2023
19.9%
13.4M shares
SC 13G/A · Feb 14, 2023
9.8%
6.2M shares
SC 13G/A · Feb 14, 2023
5.9%
3.8M shares
Eventide Asset Management, LLC
SC 13G/A · Feb 14, 2023
0.0%
0 shares
SC 13G/A · Feb 14, 2023
7.2%
4.5M shares
BANK OF AMERICA CORPORATION 56-0906609
SC 13G/A · Feb 14, 2023
0.0%
0 shares
SC 13G/A · Feb 10, 2023
4.6%
2.9M shares
Morgan Stanley I.R.S. # 36-3145972
SC 13G · Feb 10, 2023
8.9%
5.6M shares
SC 13G/A · Feb 2, 2023
3.9%
2.4M shares
Biotechnology Value Fund, L.P.
SC 13G · Jan 3, 2023
5.0%
3.1M shares
SC 13D/A · Dec 28, 2022
4.4%
2.8M shares
SC 13D/A · Dec 28, 2022
4.4%
2.8M shares
SC 13G/A · Nov 1, 2022
12.0%
7.6M shares
SC 13G · Oct 28, 2022
9.9%
6.0M shares
SC 13G · Oct 17, 2022
10.1%
6.1M shares
SC 13G · Aug 8, 2022
9.9%
5.8M shares
SC 13D/A · May 26, 2022
6.9%
4.0M shares
SC 13D/A · May 20, 2022
5.9%
3.4M shares
SC 13D/A · Apr 28, 2022
5.9%
3.4M shares
SC 13D · Apr 22, 2022
5.9%
3.4M shares
SC 13G/A · Mar 10, 2022
1.2%
687K shares
SC 13G/A · Feb 15, 2022
6.6%
3.7M shares
SC 13G/A · Feb 14, 2022
10.0%
5.0M shares
SC 13G · Feb 14, 2022
5.3%
2.5M shares
Eventide Asset Management, LLC
SC 13G · Feb 14, 2022
6.1%
2.8M shares
Morgan Stanley I.R.S. # 36-3145972
SC 13G/A · Feb 11, 2022
4.5%
2.1M shares