How many institutions held ZYME - Zymeworks Inc. - Common Stock, $0.00001 par value per share in Q3 2025?

181 institutional investors reported ZYME - Zymeworks Inc. - Common Stock, $0.00001 par value per share for Q3 2025. Use the holders table for investor-level position and value details.

Zymeworks Inc. - Common Stock, $0.00001 par value per share (ZYME)

Q: What does CUSIP 98985Y108 represent in this 13F holders report?

CUSIP 98985Y108 is the security identifier for ZYME - Zymeworks Inc. - Common Stock, $0.00001 par value per share used to aggregate holder disclosures.

CUSIP: 98985Y108

Q3 2025 13F Holders as of 30 Sep 2025

Security type / class: Equity / Common Stock, $0.00001 par value per share
Total 13F shares: 73,689,534
Total 13F value: $1,258,648,393
Share change: -2,165,903
Put/Call ratio: 52%
SEC-reported price per share: $17.08
Number of holders: 181
Value change: -$22,925,180
Number of buys: 83
Number of sells: 88
Shares outstanding: 73,761,855

Security key

98985Y108

Report period

Q3 2025

Institutions

181

Top holders

ZYME full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2026 Zymeworks Inc. SEC filings Zymeworks Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 98985Y108

Newer quarter: Q2 2026

Recent filing periods:

Q2 2026

Ownership snapshot

Top reported holders of ZYME - Zymeworks Inc. - Common Stock, $0.00001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

BIOTECHNOLOGY VALUE FUND L P

Disclosed value leader

EcoR1 Capital, LLC

Comparable rows

15/15

Latest evidence

30 Sep 2025

13D/G 3/4/5 13F Lead comparable stake: 5.2% 13D/G row: BIOTECHNOLOGY VALUE FUND L P Showing 1-6 of 15 holder rows.

Quick read

BIOTECHNOLOGY VALUE FUND L P leads the comparable SEC ownership view at 5.2%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BIOTECHNOLOGY VALUE FUND L P's linked filing trail.

Comparable ownership Top 5

BIOTECHNOLOGY VALUE FUND L P 5.2%

Redmile Group, LLC 4.9%

BlackRock, Inc. 4.8%

EcoR1 Capital, LLC 31%

Rubric Capital Management LP 6.4%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BIOTECHNOLOGY VALUE FUND L P	13D/G BVF PARTNERS L P/IL 13D/G	5.2%	$67,271,988 3,938,641 shares	$0	30 Sep 2025
Redmile Group, LLC	13D/G 3/4/5 13F 10%+ Owner · Company 13D/G 3/4/5 13F	4.9%	$63,294,210 3,705,750 shares	-$7,598,499	30 Sep 2025
BlackRock, Inc.	13F 13D/G Company 13F 13D/G	4.8% from 13D/G	$47,618,112 3,794,272 shares	—	30 Jun 2025
EcoR1 Capital, LLC	3/4/5 13F Director, 10%+ Owner · Company 3/4/5 13F	31% from 13F	$341,953,624 28,056,909 shares mixed-class rows	—	26 Jun 2025
Rubric Capital Management LP	13F Company 13F	6.4%	$59,117,415 4,710,551 shares	—	30 Jun 2025
BVF INC/IL	13F Company 13F	5.8%	$54,077,134 4,308,935 shares	—	30 Jun 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

181

73,689,534

Rows available

181

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2025 vs Q2 2025 Across Filers

Q2 2025 holders

179

Q3 2025 holders

181

Holder diff

Investor	Q2 2025 Shares	Q3 2025 Shares	Share Diff	Share Chg %	Q2 2025 value	Q3 2025 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend