// company-profile
Zymeworks Inc.
ZYMEExchangeNasdaqSectorPharmaceutical PreparationsInc.DEFilings73Insiders25
// api This Zymeworks Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Zymeworks Inc. insiders bought $0 across 11 transactions with no open-market sales.
- Most active insider: Platshon Scott with 3 transactions totaling $0.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Zymeworks Inc. as of 2026-03-31
Total reported AUM
$1.74B
QoQ change
+1.7%
Reporting period
2026-03-31
#1
EcoR1 Capital, LLC
CIK 1587114
$575.2M
23.0M shares
#2
Rubric Capital Management LP
CIK 1687509
$175.3M
7.0M shares
#3
BVF INC/IL
CIK 1056807
$93.5M
3.7M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 13, 2026 | Schneider Paul R | ZYME | Award | 178,000 | $0.00 | $0K |
| May 13, 2026 | Schneider Paul R | ZYME | Award | 119,000 | $0.00 | $0K |
| Apr 9, 2026 | Platshon Scott | ZYME | Award | 47,000 | $0.00 | $0K |
| Apr 9, 2026 | Platshon Scott | ZYME | Award | 76,000 | $0.00 | $0K |
| Apr 9, 2026 | Schayowitz Adam | ZYME | Award | 76,000 | $0.00 | $0K |
45 more transactions hidden
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