---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-177505"
form_type: "8-K"
ticker: "ZYME"
cik: "0001937653"
company_name: "Zymeworks Inc."
filed_at: "2025-08-11T23:59:59+00:00"
generated_at: "2026-05-17T15:47:12.730221+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Zymeworks appoints Ciongoli and Landry to board; Cox resigns; private placement of $4.99M to Ciongoli

## Summary
- Gregory Ciongoli and Robert E. Landry appointed as directors effective Aug 10, 2025; Ciongoli as Class II, Landry as Class I; both join Audit Committee.
- Troy M. Cox resigned from Board and Audit Committee effective Aug 9, 2025; no disagreement with company.
- Company sold 415,000 shares to Ciongoli at $12.02/share for aggregate $4,988,300 in unregistered private placement.
- Proceeds from private placement will be used for working capital and general corporate purposes; closing expected Aug 12, 2025.
- Press release highlights upcoming Q4 2025 data readout for HERIZON-GEA-01 and recent zanidatamab approvals in US, Europe, and China.

## SEC filing metadata
- accession: 0001193125-25-177505
- form_type: 8-K
- ticker: ZYME
- cik: 0001937653
- company_name: Zymeworks Inc.
- filed_at: 2025-08-11T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 5.02, 3.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1937653/000119312525177505/0001193125-25-177505-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1937653/000119312525177505/d86037d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-177505
- JSON: https://secwatch.observer/filing/0001193125-25-177505.json
- Plain text: https://secwatch.observer/filing/0001193125-25-177505.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.