Zymeworks Inc.
US ˙ NasdaqGS ˙ US98985Y1082

SecurityZYME / Zymeworks Inc.
InstitutionJacobs Levy Equity Management, Inc
Latest Disclosed Ownership42,786 shares
Latest Disclosed Value $ 1,071,361
Jacobs Levy Equity Management, Inc ownership in ZYME / Zymeworks Inc.

On May 15, 2026 - Jacobs Levy Equity Management, Inc filed a 13F-HR form disclosing ownership of 42,786 shares of Zymeworks Inc. (US:ZYME) valued at $1,071,361 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 14, 2025 disclosing 0 shares of Zymeworks Inc.. The current value of the position is $1,073,929 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ZYMEWORKS COM 98985Y108 42,786 42,786 1,071 0.0045
2025-08-14 2025-06-30 13F ZYMEWORKS COM 98985Y108 0 -12,040 -100.00 0 -100.00
2025-05-15 2025-03-31 13F ZYMEWORKS COM 98985Y108 12,040 -344,128 -96.62 143 -97.26 0.0006
2025-02-14 2024-12-31 13F ZYMEWORKS COM 98985Y108 356,168 -166,472 -31.85 5,214 -20.51 0.0184
2024-11-14 2024-09-30 13F ZYMEWORKS COM 98985Y108 522,640 -129,088 -19.81 6,559 18.27 0.0253
2024-08-14 2024-06-30 13F ZYMEWORKS COM 98985Y108 651,728 -64,754 -9.04 5,546 -26.42 0.0229
2024-05-15 2024-03-31 13F ZYMEWORKS COM 98985Y108 716,482 348,441 94.67 7,537 97.15 0.0337
2024-02-14 2023-12-31 13F ZYMEWORKS COM 98985Y108 368,041 304,040 475.06 3,824 843.95 0.0193
2023-11-17 2023-09-30 13F ZYMEWORKS COM 98985Y108 64,001 -115,895 -64.42 406 -73.94 0.0024
2023-08-14 2023-06-30 13F ZYMEWORKS COM 98985Y108 179,896 179,896 1,554 0.0090
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.