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Are Zymeworks Insiders Buying or Selling?
Zymeworks (ZYME) has had 1 insider transaction in the past 90 days, all sells. The most recent was Adam Schayowitz, who sold 13,832 shares at $25.85 on October 9, 2026.
Insider trading patterns can signal confidence or concern from the people who know the company best. AltIndex tracks insider transactions as one of 25+ alternative data signals in the ZYME AI Score. For government officials trading this stock, see ZYME congressional trading.
Who’s Trading Zymeworks Stock?
| Insider | Activity | Trades | Last Trade |
|---|---|---|---|
| EcoR1 Capital, LLC | Bought $32M | 16 | Jan 17, 2025 |
| OLEG NODELMAN | Bought $26M | 20 | May 19, 2025 |
| Kenneth Galbraith | Sold $4.2M | 6 | Jan 12, 2026 |
| Moore Paul Andrew | Sold $1M | 5 | Jan 12, 2026 |
| Smith Jeffrey T L | Sold $640,000 | 3 | Jan 12, 2026 |
| Adam Schayowitz | Sold $360,000 | 1 | Oct 9, 2026 |
Recent Zymeworks Insider Transactions
| Insider | Transaction Date | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Adam Schayowitz | Oct 9, 2026 | Sell | 13,832 | $25.85 | $360,000 |
| Kenneth Galbraith | Jan 12, 2026 | Sell | 30,424 | $22.67 | $690,000 |
| Mark Hollywood | Jan 12, 2026 | Sell | 6,120 | $22.67 | $140,000 |
| Smith Jeffrey T L | Jan 12, 2026 | Sell | 9,310 | $22.67 | $210,000 |
| Moore Paul Andrew | Jan 12, 2026 | Sell | 9,560 | $22.67 | $220,000 |
| Smith Jeffrey T L | Jan 5, 2026 | Sell | 10,538 | $25.1 | $260,000 |
| Kenneth Galbraith | Jan 5, 2026 | Sell | 31,686 | $25.1 | $800,000 |
| Kenneth Galbraith | Jan 5, 2026 | Sell | 22,657 | $25.1 | $570,000 |
| Moore Paul Andrew | Jan 5, 2026 | Sell | 10,821 | $25.1 | $270,000 |
| Moore Paul Andrew | Jan 5, 2026 | Sell | 9,289 | $25.1 | $230,000 |
| Kenneth Galbraith | Dec 22, 2025 | Sell | 47,528 | $27.02 | $1.3M |
| OLEG NODELMAN | May 19, 2025 | Buy | 5,919 | $11.78 | $70,000 |
| OLEG NODELMAN | May 15, 2025 | Buy | 49,502 | $11.43 | $570,000 |
| OLEG NODELMAN | Apr 17, 2025 | Buy | 54,760 | $11.52 | $630,000 |
| OLEG NODELMAN | Apr 16, 2025 | Buy | 73,953 | $11.16 | $830,000 |
| OLEG NODELMAN | Apr 4, 2025 | Buy | 196,438 | $11.17 | $2.2M |
| OLEG NODELMAN | Apr 3, 2025 | Buy | 120,770 | $11.84 | $1.4M |
| OLEG NODELMAN | Apr 2, 2025 | Buy | 74,360 | $11.85 | $880,000 |
| OLEG NODELMAN | Apr 1, 2025 | Buy | 48,658 | $11.6 | $560,000 |
| OLEG NODELMAN | Mar 31, 2025 | Buy | 4,397 | $11.75 | $52,000 |
| OLEG NODELMAN | Mar 26, 2025 | Buy | 43,848 | $12.24 | $540,000 |
| OLEG NODELMAN | Mar 25, 2025 | Buy | 53,501 | $12.91 | $690,000 |
| OLEG NODELMAN | Mar 24, 2025 | Buy | 22,689 | $13.08 | $300,000 |
| OLEG NODELMAN | Mar 21, 2025 | Buy | 31,033 | $12.78 | $400,000 |
| OLEG NODELMAN | Mar 20, 2025 | Buy | 73,476 | $12.93 | $950,000 |
| OLEG NODELMAN | Mar 19, 2025 | Buy | 58,306 | $12.64 | $740,000 |
| OLEG NODELMAN | Mar 18, 2025 | Buy | 113,880 | $12.65 | $1.4M |
| OLEG NODELMAN | Mar 17, 2025 | Buy | 56,277 | $12.23 | $690,000 |
| OLEG NODELMAN | Mar 13, 2025 | Buy | 468,356 | $12.48 | $5.8M |
| OLEG NODELMAN | Mar 12, 2025 | Buy | 292,934 | $12.25 | $3.6M |
| OLEG NODELMAN | Mar 11, 2025 | Buy | 320,690 | $11.49 | $3.7M |
| EcoR1 Capital, LLC | Jan 17, 2025 | Buy | 19,748 | $13.87 | $270,000 |
| EcoR1 Capital, LLC | Jan 16, 2025 | Buy | 121,681 | $13.89 | $1.7M |
| EcoR1 Capital, LLC | Jan 15, 2025 | Buy | 39,029 | $14.01 | $550,000 |
| EcoR1 Capital, LLC | Jan 14, 2025 | Buy | 54,500 | $13.56 | $740,000 |
| EcoR1 Capital, LLC | Jan 13, 2025 | Buy | 74,125 | $13.39 | $990,000 |
| EcoR1 Capital, LLC | Jan 10, 2025 | Buy | 204,098 | $13.13 | $2.7M |
| EcoR1 Capital, LLC | Jan 8, 2025 | Buy | 21,021 | $14.07 | $300,000 |
| Moore Paul Andrew | Jan 6, 2025 | Sell | 11,408 | $14.92 | $170,000 |
| Kenneth Galbraith | Jan 6, 2025 | Sell | 33,406 | $14.92 | $500,000 |
| Kenneth Galbraith | Jan 6, 2025 | Sell | 23,885 | $14.92 | $360,000 |
| Smith Jeffrey T L | Jan 6, 2025 | Sell | 11,110 | $14.92 | $170,000 |
| Moore Paul Andrew | Jan 6, 2025 | Sell | 9,792 | $14.92 | $150,000 |
| EcoR1 Capital, LLC | Jan 2, 2025 | Buy | 157,880 | $14.78 | $2.3M |
| EcoR1 Capital, LLC | Dec 31, 2024 | Buy | 146,501 | $14.57 | $2.1M |
| EcoR1 Capital, LLC | Dec 30, 2024 | Buy | 58,988 | $14.47 | $850,000 |
| EcoR1 Capital, LLC | Dec 27, 2024 | Buy | 101,659 | $14.49 | $1.5M |
| EcoR1 Capital, LLC | Dec 26, 2024 | Buy | 16,692 | $14.38 | $240,000 |
| EcoR1 Capital, LLC | Dec 24, 2024 | Buy | 11,958 | $14.12 | $170,000 |
| EcoR1 Capital, LLC | Dec 23, 2024 | Buy | 251,502 | $14.25 | $3.6M |
| EcoR1 Capital, LLC | Dec 20, 2024 | Buy | 704,488 | $14.08 | $9.9M |
| EcoR1 Capital, LLC | Dec 19, 2024 | Buy | 298,818 | $13.53 | $4M |
Frequently Asked Questions: Zymeworks Insider Trading
In the past 90 days, Zymeworks insiders have made 0 buys and 1 sell. The net selling may indicate insiders are taking profits or reducing exposure.
The most recent sale was by Adam Schayowitz who sold 13,832 shares on October 9, 2026. View all transactions in the table on this page.
Insider buying is generally a stronger signal than insider selling, since insiders may sell for personal reasons (diversification, taxes) but typically buy only when they believe the stock is undervalued. AltIndex uses insider transaction patterns alongside 25+ other signals in the AI Score.
EcoR1 Capital, LLC has bought the most ZYME stock in the last 2 years, with a total value of $32M.
Galbraith Kenneth has sold the most ZYME stock in the last 2 years, with a total value of $4.2M.
According to our estimates, the total value of insider transactions for Zymeworks in the last 2 years is positive, amounting to $52M. This indicates that insiders have predominantly bought shares, showcasing their confidence in the company's future prospects.
