There have been 50 recent insider transactions recorded for Zymeworks Inc. (ZYME), including 35 buys and 9 sells. Total insider buying was valued at $35.86M and total insider selling at $476.07K.
Notable insiders with recent activity include Mekan Sabeen, Mahony Susan, Neu Kelvin. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — ZYME
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-02-01 |
Mekan Sabeen |
SVP & Chief Medical Officer |
Unknown |
192,000 |
$11.75 |
$2.26M |
- |
| 2026-01-12 |
Mahony Susan |
Director |
RSU Award |
7,700 |
- |
- |
7,700 |
| 2026-01-12 |
Neu Kelvin |
Director |
RSU Award |
7,700 |
- |
- |
7,700 |
| 2026-01-12 |
Galbraith Kenneth |
Chair & CEO |
Option Exercise (Sell) |
64,000 |
- |
- |
128,000 |
| 2026-01-12 |
Landry Robert E |
Director |
RSU Award |
7,700 |
- |
- |
7,700 |
| 2026-01-12 |
Smith Jeffrey T L |
EVP & Chief Medical Officer |
Informative Sell |
9,310 |
$22.67 |
$211.09K |
26,708 |
| 2026-01-12 |
Campoy Carlos |
Director |
RSU Award |
7,700 |
- |
- |
7,700 |
| 2026-01-12 |
Cesano Alessandra |
Director |
RSU Award |
7,700 |
- |
- |
7,700 |
| 2026-01-12 |
Moore Paul Andrew |
Chief Scientific Officer |
Option Exercise (Sell) |
17,666 |
- |
- |
35,334 |
| 2026-01-12 |
Ciongoli Gregory Austin |
Director |
RSU Award |
7,700 |
- |
- |
7,700 |
| 2026-01-12 |
Cherry Brian N |
Director |
Unknown |
- |
- |
- |
- |
| 2026-01-12 |
Cherry Brian N |
Director |
RSU Award |
15,400 |
- |
- |
15,400 |
| 2026-01-12 |
Hollywood Mark |
EVP & Chief Operating Officer |
Option Exercise (Sell) |
17,666 |
- |
- |
35,334 |
| 2026-01-09 |
Hollywood Mark |
EVP & Chief Operating Officer |
Unknown |
53,000 |
- |
- |
- |
| 2026-01-06 |
Patterson Leone D |
EVP, Chief Bus & Fin Officer |
RSU Award |
459 |
$10.55 |
$4.84K |
459 |
| 2026-01-05 |
Galbraith Kenneth |
Chair & CEO |
Option Exercise (Sell) |
47,668 |
- |
- |
- |
| 2026-01-05 |
Smith Jeffrey T L |
EVP & Chief Medical Officer |
Informative Sell |
10,538 |
$25.10 |
$264.47K |
18,352 |
| 2026-01-05 |
Moore Paul Andrew |
Chief Scientific Officer |
Option Exercise (Sell) |
17,168 |
- |
- |
- |
| 2025-12-22 |
Galbraith Kenneth |
Chair & CEO |
Option Exercise (Sell) |
100,000 |
- |
- |
- |
| 2025-08-12 |
Ciongoli Gregory Austin |
Director |
RSU Award |
415,000 |
$12.02 |
$4.99M |
488,500 |
| 2025-08-11 |
Landry Robert E |
Director |
RSU Award |
62,000 |
$12.44 |
$771.28K |
62,000 |
| 2025-08-11 |
Ciongoli Gregory Austin |
Director |
RSU Award |
62,000 |
$12.44 |
$771.28K |
62,000 |
| 2025-08-10 |
Landry Robert E |
Director |
Unknown |
- |
- |
- |
- |
| 2025-08-10 |
Ciongoli Gregory Austin |
Director |
Unknown |
- |
- |
- |
- |
| 2025-06-26 |
Ecor1 Capital, Llc |
10 Percent Owner |
Option Exercise (ITM) |
5,086,521 |
$0.00 |
$508.65 |
- |
| 2025-05-19 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
5,919 |
$11.78 |
$69.74K |
17,883,908 |
| 2025-05-15 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
49,502 |
$11.43 |
$565.85K |
17,877,989 |
| 2025-04-17 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
54,760 |
$11.52 |
$630.82K |
17,828,487 |
| 2025-04-16 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
73,953 |
$11.16 |
$825.59K |
17,773,727 |
| 2025-04-04 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
196,438 |
$11.17 |
$2.19M |
17,699,774 |
| 2025-04-03 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
120,770 |
$11.84 |
$1.43M |
17,503,336 |
| 2025-04-02 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
74,360 |
$11.85 |
$881.02K |
17,382,566 |
| 2025-04-01 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
48,658 |
$11.60 |
$564.65K |
17,308,206 |
| 2025-03-31 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
4,397 |
$11.75 |
$51.66K |
17,259,548 |
| 2025-03-26 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
43,848 |
$12.24 |
$536.86K |
17,255,151 |
| 2025-03-25 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
53,501 |
$12.91 |
$690.45K |
17,211,303 |
| 2025-03-24 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
22,689 |
$13.08 |
$296.85K |
17,157,802 |
| 2025-03-21 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
31,033 |
$12.78 |
$396.52K |
17,135,113 |
| 2025-03-20 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
73,476 |
$12.93 |
$949.88K |
17,104,080 |
| 2025-03-19 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
58,306 |
$12.64 |
$737.23K |
17,030,604 |
| 2025-03-18 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
113,880 |
$12.65 |
$1.44M |
16,972,298 |
| 2025-03-17 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
56,277 |
$12.23 |
$688.46K |
16,858,418 |
| 2025-03-13 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
468,356 |
$12.48 |
$5.85M |
16,802,141 |
| 2025-03-12 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
292,934 |
$12.25 |
$3.59M |
16,333,785 |
| 2025-03-11 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
320,690 |
$11.49 |
$3.69M |
16,040,851 |
| 2025-02-17 |
Nodelman Oleg |
10 Percent Owner |
Unknown |
- |
- |
- |
15,720,161 |
| 2025-01-17 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
19,748 |
$13.87 |
$274K |
15,720,161 |
| 2025-01-16 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
121,681 |
$13.89 |
$1.69M |
15,700,413 |
| 2025-01-15 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
39,029 |
$14.01 |
$546.67K |
15,578,732 |
| 2025-01-14 |
Ecor1 Capital, Llc |
10 Percent Owner |
Informative Buy |
54,500 |
$13.56 |
$739.27K |
15,539,703 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
