---
schema_version: "secwatch.filing_event.v1"
accession: "0001125345-23-000011"
form_type: "8-K"
ticker: "MGNX"
cik: "0001125345"
company_name: "MACROGENICS INC"
filed_at: "2023-01-05T23:59:59+00:00"
generated_at: "2026-06-20T19:18:51.542999+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# MacroGenics appoints Dr. Margaret Liu and Meenu Chhabra Karson to Board of Directors

## Summary
- Appointments effective January 3, 2023; Liu joins Science & Tech Committee, Karson joins Audit Committee.
- Board expands to ten directors, nine of whom are independent.
- Dr. Liu is a gene therapy, vaccines, and immunotherapy expert; former exec at Merck and Chiron.
- Meenu Chhabra Karson is a biopharma executive; previously CEO of Proteostasis Therapeutics and led its IPO.
- Karson received an option to purchase 36,000 shares vesting monthly over 36 months.

## SEC filing metadata
- accession: 0001125345-23-000011
- form_type: 8-K
- ticker: MGNX
- cik: 0001125345
- company_name: MACROGENICS INC
- filed_at: 2023-01-05T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1125345/000112534523000011/0001125345-23-000011-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1125345/000112534523000011/mgnx-20230103.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001125345-23-000011
- JSON: https://secwatch.observer/filing/0001125345-23-000011.json
- Plain text: https://secwatch.observer/filing/0001125345-23-000011.txt

## Key facts
- Executive change
  Meenu Chhabra Karson was appointed as Director at MACROGENICS INC.
  - Action: appointed
  - Role: Director
  source text: On January 3, 2023, the Board of Directors (the "Board") of MacroGenics, Inc. (the "Company") approved the appointment of Meenu Chhabra Karson to serve as a director on the Board, effective January 3, 2023 (the “Effective Date”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1125345/000112534523000011/0001125345-23-000011-index.htm

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