---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-224161"
form_type: "8-K"
ticker: "ZYME"
cik: "0001937653"
company_name: "Zymeworks Inc."
filed_at: "2026-05-14T20:29:55+00:00"
generated_at: "2026-05-14T20:40:16.365894+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Zymeworks authorizes $125M share repurchase program, expects cash runway beyond 2028

## Summary
- Board authorized up to $125M share repurchase of common stock under 2026 program.
- Prior 2025 program terminated; 4,197,553 shares repurchased at avg $24.36 for $102.3M.
- Company expects existing cash plus $440M milestone payments for Ziihera to fund operations beyond 2028.
- Approximately 73.0M shares outstanding as of May 13, 2026.

## SEC filing metadata
- accession: 0001193125-26-224161
- form_type: 8-K
- ticker: ZYME
- cik: 0001937653
- company_name: Zymeworks Inc.
- filed_at: 2026-05-14T20:29:55+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1937653/000119312526224161/0001193125-26-224161-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1937653/000119312526224161/d110930d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-224161
- JSON: https://secwatch.observer/filing/0001193125-26-224161.json
- Plain text: https://secwatch.observer/filing/0001193125-26-224161.txt

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