Form 4 for ZYME Zymeworks Inc.
Accepted 2025-12-22 00:00:00 ET · period of report 2025-12-22 · accession 0001193125-25-329028 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2025-12-22 | 2025-12-22 | ZYME | Galbraith Kenneth | COB, CEO, Dir | S - Sale+OE | $27.02 | -47.5K | 133.3K | -26% | -$1.28M |
| D | 2025-12-22 | 2025-12-22 | ZYME | Galbraith Kenneth | COB, CEO, Dir | M - OptEx | $0.00 | +100.0K | 180.8K | +124% | $0 |
| D | 2025-12-22 | 2025-12-22 | ZYME | Galbraith Kenneth | COB, CEO, Dir | M - OptEx | $0.00 | -100.0K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-12-22 | S | D | 47,528 | $27.02 | 133,275 | D | — | — | (F3) The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $26.83 to $27.16 inclusive. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. |
| 2 | Common | Common Stock | 2025-12-22 | M | A | 100,000 | $0.00 | 180,803 | D | — | — | (F1) Represents shares of common stock issued upon vesting of restricted stock units ("RSUs") granted on December 22, 2022. |
| 3 | Derivative | Restricted Stock Unit | 2025-12-22 | M | D | 100,000 | $0.00 | 0 | D | — · 2025-12-22 to 2025-12-22 | 100,000 Common Stock | (F4) Each RSU represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's common stock. (F5) The RSUS vested on December 22, 2025. |