---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-052940"
form_type: "8-K"
ticker: "AXSM"
cik: "0001579428"
company_name: "Axsome Therapeutics, Inc."
filed_at: "2023-10-11T23:59:59+00:00"
generated_at: "2026-06-10T01:39:59.190748+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Axsome Therapeutics appoints Dr. Susan Mahony to board of directors

## Summary
- Board expanded from 4 to 5 directors; Dr. Mahony appointed effective Oct. 10, 2023.
- Former Horizon Therapeutics board member and ex-SVP/President of Lilly Oncology.
- Received initial option grant worth $325,000 vesting over 3 years and a pro-rated grant of $81,250 vesting in 1 year.
- Annual cash retainer for non-employee directors, pro-rated for 2023.

## SEC filing metadata
- accession: 0000950170-23-052940
- form_type: 8-K
- ticker: AXSM
- cik: 0001579428
- company_name: Axsome Therapeutics, Inc.
- filed_at: 2023-10-11T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1579428/000095017023052940/0000950170-23-052940-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1579428/000095017023052940/axsm-20231008.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-052940
- JSON: https://secwatch.observer/filing/0000950170-23-052940.json
- Plain text: https://secwatch.observer/filing/0000950170-23-052940.txt

## Key facts
- Executive change
  Dr. Susan Mahony was appointed as Director at Axsome Therapeutics, Inc..
  - Action: appointed
  - Role: Director
  source text: The Board of Directors (the “Board”) of Axsome Therapeutics, Inc. (the “Company”), increased the size of the Board from four to five directors, and on October 8, 2023 appointed Dr. Susan Mahony as a director to be effective as of October 10, 2023 (the “Effective Date”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1579428/000095017023052940/0000950170-23-052940-index.htm

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