ZYME · Insider trading · 13F holders · Congress trades
Zymeworks Inc. (ZYME)
Who is buying and selling ZYME: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 13
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $358K
- Congress trades, 12 months
- 0
ZYME at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 ZYME insider filed 1 sale worth $358K on SEC Form 4, and no open-market purchases.
- 13 13F filers hold ZYME among their 50 largest positions, worth $1.1B combined, including Oleg Nodelman and Joseph Edelman. The biggest bets by portfolio weight are Oleg Nodelman (29.8%), Prosight Management, LP (3.0%) and Bvf Inc/il (2.4%). In their latest 13Fs, 0 managers opened a new position and 2 added to one.
- No member of Congress has disclosed a trade in ZYME.
- ZYME last closed at $28.71 on Oct 29, 2026.
ZYME insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 ZYME insider filed 1 sale worth $358K on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 9, 2026 | Schayowitz Adam | EVP, Head of R&D | Sale | 13,832 | $25.85 | $358K | SEC |
Who owns ZYME? Hedge funds and superinvestors
13 13F filers hold ZYME among their 50 largest positions, worth $1.1B combined, including Oleg Nodelman and Joseph Edelman. The biggest bets by portfolio weight are Oleg Nodelman (29.8%), Prosight Management, LP (3.0%) and Bvf Inc/il (2.4%). In their latest 13Fs, 0 managers opened a new position and 2 added to one.
Superinvestors holding ZYME: Oleg Nodelman 29.8% · Joseph Edelman 1.7%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Oleg NodelmanHedge fund | 29.8% | $600.4M | 22,970,388 | +0.0% shares | Q2 2026 |
| Rubric Capital Management LPHedge fund | 1.7% | $183.0M | 7,000,000 | +0.0% shares | Q2 2026 |
| Joseph EdelmanHedge fund | 1.7% | $109.3M | 4,182,953 | +19.2% shares | Q2 2026 |
| Bvf Inc/ilInvestment manager | 2.4% | $95.4M | 3,649,142 | -2.3% shares | Q2 2026 |
| Nextech Invest Ltd.Hedge fund | 1.4% | $29.1M | 1,113,946 | +0.0% shares | Q2 2026 |
| Prosight Management, LPHedge fund | 3.0% | $17.6M | 674,434 | +25.1% shares | Q2 2026 |
| Redmile Group, LLCHedge fund | 0.9% | $12.9M | 491,654 | +0.0% shares | Q2 2026 |
| Capricorn Fund Managers LtdHedge fund | 1.0% | $12.7M | 486,529 | -51.7% shares | Q2 2026 |
| Diadema Partners LPHedge fund | 1.4% | $3.7M | 142,132 | +0.0% shares | Q2 2026 |
| Manatuck Hill Partners, LLCHedge fund | 0.9% | $2.6M | 100,000 | — | Q2 2026 |
| Verdad Advisers, LPAsset manager | 1.7% | $1.7M | 66,688 | -19.4% shares | Q2 2026 |
| North Growth Management Ltd.Investment manager | 0.2% | $1.2M | 47,000 | +2.2% shares | Q3 2026 |
| BetterWealth, LLCWealth manager | 0.1% | $493K | 18,622 | — | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 2, Q2 2026: 11). Screen ZYME in the grand portfolio →
ZYME stock trades by members of Congress
No member of Congress has disclosed a trade in ZYME.
ZYME questions and answers
Are insiders buying ZYME stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 ZYME insider filed 1 sale worth $358K on SEC Form 4, and no open-market purchases.
Which hedge funds own ZYME?
13 13F filers hold ZYME among their 50 largest positions, worth $1.1B combined, including Oleg Nodelman and Joseph Edelman. The biggest bets by portfolio weight are Oleg Nodelman (29.8%), Prosight Management, LP (3.0%) and Bvf Inc/il (2.4%). In their latest 13Fs, 0 managers opened a new position and 2 added to one.
Has Congress traded ZYME?
No member of Congress has disclosed a trade in ZYME.
Who is the largest holder of ZYME?
Among 13F filers, Oleg Nodelman reports the largest ZYME position, $600.4M (22,970,388 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Oleg Nodelman's: 29.8% of its portfolio.
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