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Zymeworks Inc. (ZYME)
NASDAQ: ZYME · Real-Time Price · USD
Healthcare · Biotechnology
27.93-0.29 (-1.03%)
Insider Score
––Not scored
ZYME Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
ZYME Stock Insider Trading Activity
ZYME stock’s insider trading shows 1 sale on the open market for an estimated $357.56K by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Schayowitz Adam Other | Sell | 13,832 | $25.85 | $357.56K | 37.3% | 23,205 | Oct 9, 2026 | — | Form 4 |
| Schayowitz Adam Other | Option exercise | 37,037 | — | — | New | 37,037 | Oct 9, 2026 | — | Form 4 |
| Hollywood Mark COO | Award | 939 | $22.22 | $20.86K | 0.7% | 133,852 | Jul 6, 2026 | — | Form 4 |
| Hollywood Mark COO | Sell | 6,120 | $22.67 | $138.76K | 4.4% | 132,913 | Jan 12, 2026 | — | Form 4 |
| Smith Jeffrey T L Other | Option exercise | 17,666 | — | — | 96.3% | 36,018 | Jan 12, 2026 | — | Form 4 |
| Smith Jeffrey T L Other | Sell | 9,310 | $22.67 | $211.09K | 25.8% | 26,708 | Jan 12, 2026 | — | Form 4 |
| Hollywood Mark COO | Option exercise | 17,666 | — | — | 14.6% | 139,033 | Jan 12, 2026 | — | Form 4 |
| Moore Paul Andrew Other | Sell | 9,560 | $22.67 | $216.76K | 16.5% | 48,497 | Jan 12, 2026 | — | Form 4 |
| Galbraith Kenneth CEO | Option exercise | 64,000 | — | — | 33.1% | 257,266 | Jan 12, 2026 | — | Form 4 |
| Galbraith Kenneth CEO | Sell | 30,424 | $22.67 | $689.82K | 11.8% | 226,842 | Jan 12, 2026 | — | Form 4 |
| Moore Paul Andrew Other | Option exercise | 17,666 | — | — | 43.7% | 58,057 | Jan 12, 2026 | — | Form 4 |
| PATTERSON LEONE D Other | Award | 459 | $10.55 | $4.84K | New | 459 | Jan 6, 2026 | — | Form 4 |
| Moore Paul Andrew Other | Sell | 10,821 | $25.10 | $271.57K | 21.1% | 40,391 | Jan 5, 2026 | — | Form 4 |
| Smith Jeffrey T L Other | Option exercise | 20,000 | — | — | 225% | 28,890 | Jan 5, 2026 | — | Form 4 |
| Smith Jeffrey T L Other | Sell | 10,538 | $25.10 | $264.47K | 36.5% | 18,352 | Jan 5, 2026 | — | Form 4 |
| Galbraith Kenneth CEO | Option exercise | 47,668 | — | — | 35.8% | 180,943 | Jan 5, 2026 | — | Form 4 |
| Galbraith Kenneth CEO | Sell | 22,657 | $25.10 | $568.62K | 12.5% | 158,286 | Jan 5, 2026 | — | Form 4 |
| Galbraith Kenneth CEO | Option exercise | 66,666 | — | — | 42.1% | 224,952 | Jan 5, 2026 | — | Form 4 |
| Galbraith Kenneth CEO | Sell | 31,686 | $25.10 | $795.22K | 14.1% | 193,266 | Jan 5, 2026 | — | Form 4 |
| Moore Paul Andrew Other | Sell | 9,289 | $25.10 | $233.13K | 22.9% | 31,212 | Jan 5, 2026 | — | Form 4 |
| Moore Paul Andrew Other | Option exercise | 20,000 | — | — | 64.1% | 51,212 | Jan 5, 2026 | — | Form 4 |
| Moore Paul Andrew Other | Option exercise | 17,168 | — | — | 73.6% | 40,501 | Jan 5, 2026 | — | Form 4 |
| Galbraith Kenneth CEO | Sell | 47,528 | $27.02 | $1.28M | 26.3% | 133,275 | Dec 22, 2025 | — | Form 4 |
| Galbraith Kenneth CEO | Option exercise | 100,000 | — | — | 124% | 180,803 | Dec 22, 2025 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
- Option exercise (M) — Exercise or conversion of an exempt derivative
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.