Quick Takeaways
- Zymeworks BC Inc. has 16 insiders with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are not currently available.
- Info
- Insider Trading
Insider Transactions Reported by 16 Insiders of Zymeworks BC Inc.
- Location
- Vancouver, British Columbia, Canada
What Changed
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 17 Apr 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Zymeworks BC Inc. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Ali Tehrani | Chief Executive Officer, Director | $1,424,421 | Mixed | 15 Jul 2021 | ||
| Anthony J. Polverino | Chief Scientific Officer | $164,196 | Mixed | 07 Jan 2022 | ||
| Mr. Neil Klompas | Chief Operating Officer | $69,910 | Mixed | 05 Jul 2022 | ||
| Neil Josephson | Chief Medical Officer | $65,165 | Mixed | 10 Nov 2022 | ||
| Kathryn O'Driscoll | Chief People Officer | $28,639 | Mixed | 06 Jul 2021 | ||
| James Priour | Chief Commercial Officer | $11,334 | Mixed | 06 Jul 2021 | ||
| Kelvin Neu | Director | Mixed | 06 May 2021 | |||
| Troy Cox | Director | Mixed | 06 May 2021 | |||
| Kenneth Galbraith | Chair, President & CEO, Director | Mixed | 15 Jan 2022 | |||
| Kenneth J. Hillan | Director | Mixed | 06 May 2021 | |||
| Christopher Astle | SVP & Chief Financial Officer | Mixed | 10 Mar 2022 | |||
| Paul Andrew Moore | Chief Scientific Officer | Mixed | 18 Jul 2022 | |||
| Lota S. Zoth | Director | Mixed | 06 May 2021 | |||
| Susan Mahony | Director | Mixed | 06 May 2021 | |||
| Hollings Renton | Director | Mixed | 06 May 2021 | |||
| Natalie Sacks | Director | Mixed | 06 May 2021 |
Top shareholders of Zymeworks BC Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Ali Tehrani |
3/4/5
|
Chief Executive Officer, Director |
—
class O/S missing
|
315,836
|
$1,424,421 | — | 15 Jul 2021 | |
| Anthony J. Polverino |
3/4/5
|
Chief Scientific Officer |
—
class O/S missing
|
36,407
|
$164,196 | — | 07 Jan 2022 | |
| Mr. Neil Klompas |
3/4/5
|
Chief Operating Officer |
—
class O/S missing
|
15,501
|
$69,910 | — | 05 Jul 2022 | |
| Neil Josephson |
3/4/5
|
Chief Medical Officer |
—
mixed-class rows
|
26,221
mixed-class rows
|
$65,165 | — | 10 Nov 2022 | |
| Kathryn O'Driscoll |
3/4/5
|
Chief People Officer |
—
class O/S missing
|
6,350
|
$28,639 | — | 06 Jul 2021 | |
| James Priour |
3/4/5
|
Chief Commercial Officer |
—
class O/S missing
|
2,513
|
$11,334 | — | 06 Jul 2021 | |
| Kenneth Galbraith |
3/4/5
|
Chair, President & CEO, Director |
—
class O/S missing
|
500,000
|
— | — | 15 Jan 2022 | |
| Paul Andrew Moore |
3/4/5
|
Chief Scientific Officer |
—
class O/S missing
|
200,000
|
— | — | 18 Jul 2022 | |
| Christopher Astle |
3/4/5
|
SVP & Chief Financial Officer |
—
class O/S missing
|
125,000
|
— | — | 10 Mar 2022 | |
| Hollings Renton |
3/4/5
|
Director |
—
class O/S missing
|
9,000
|
— | — | 06 May 2021 | |
| Kelvin Neu |
3/4/5
|
Director |
—
class O/S missing
|
9,000
|
— | — | 06 May 2021 | |
| Kenneth J. Hillan |
3/4/5
|
Director |
—
class O/S missing
|
9,000
|
— | — | 06 May 2021 | |
| Lota S. Zoth |
3/4/5
|
Director |
—
class O/S missing
|
9,000
|
— | — | 06 May 2021 | |
| Natalie Sacks |
3/4/5
|
Director |
—
class O/S missing
|
9,000
|
— | — | 06 May 2021 | |
| Susan Mahony |
3/4/5
|
Director |
—
class O/S missing
|
9,000
|
— | — | 06 May 2021 | |
| Troy Cox |
3/4/5
|
Director |
—
class O/S missing
|
9,000
|
— | — | 06 May 2021 |
Recent Insider Transactions by Companies or Individuals for Zymeworks BC Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* An asterisk sign (*) next to the price indicates that the price is likely invalid.