---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-063906"
form_type: "8-K"
ticker: "SYBX"
cik: "0001527599"
company_name: "SYNLOGIC, INC."
filed_at: "2023-11-15T23:59:59+00:00"
generated_at: "2026-06-08T02:20:44.082376+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Synlogic reprices employee stock options to $1.85/share on Nov 10, 2023

## Summary
- Board approved one-time repricing on Nov 9, 2023; exercise price reduced to $1.85 (Nov 10 close).
- Repricing covers all employee stock options (vested/unvested) under 2015 and 2017 equity plans; non-employee directors excluded.
- CEO Aoife Brennan: 147,214 options repriced from weighted avg $51.78; CFO Michael Jensen: 35,330 from $19.78.
- COO Antoine Awad: 52,693 options repriced from weighted avg $30.30.
- Company expects no material impact on its statement of operations.

## SEC filing metadata
- accession: 0000950170-23-063906
- form_type: 8-K
- ticker: SYBX
- cik: 0001527599
- company_name: SYNLOGIC, INC.
- filed_at: 2023-11-15T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1527599/000095017023063906/0000950170-23-063906-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1527599/000095017023063906/sybx-20231110.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-063906
- JSON: https://secwatch.observer/filing/0000950170-23-063906.json
- Plain text: https://secwatch.observer/filing/0000950170-23-063906.txt

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