---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-23-019718"
form_type: "8-K"
ticker: "MXCT"
cik: "0001287098"
company_name: "MAXCYTE, INC."
filed_at: "2023-12-11T23:59:59+00:00"
generated_at: "2026-06-07T14:44:53.929770+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# MaxCyte CEO Doug Doerfler retires; Maher Masoud appointed CEO; SPL revenue guidance raised to at least $10M

## Summary
- Doug Doerfler retires as President and CEO effective Dec 31, 2023; remains as advisor.
- Maher Masoud, EVP Global Business Development & Chief Counsel, becomes President & CEO on Jan 1, 2024; also joins Board.
- Masoud's base salary raised to $590,000 (from $412,500); target bonus 60% of base; receives 400,000 share option grant.
- 2023 core business revenue guidance reiterated at $28-30M; SPL program revenue now expected at least $10M (above prior guidance).
- Doerfler gets 18 months base salary severance, 18 months COBRA, 2023 bonus, and monthly $10K consulting fee for up to 20 hrs.

## SEC filing metadata
- accession: 0001558370-23-019718
- form_type: 8-K
- ticker: MXCT
- cik: 0001287098
- company_name: MAXCYTE, INC.
- filed_at: 2023-12-11T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1287098/000155837023019718/0001558370-23-019718-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1287098/000155837023019718/mxct-20231210x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-23-019718
- JSON: https://secwatch.observer/filing/0001558370-23-019718.json
- Plain text: https://secwatch.observer/filing/0001558370-23-019718.txt

## Key facts
- Executive change
  Doug Doerfler retired as President, Chief Executive Officer and Director at MAXCYTE, INC..
  - Action: retired
  - Role: President, Chief Executive Officer and Director
  source text: On December 10, 2023, Doug Doerfler, President and Chief Executive Officer of MaxCyte, Inc. (the “ Company ”), notified the Company’s Board of Directors (the “ Board ”) of his decision to retire from those positions and as a member of the Board, in each case effective as of December 31, 2023 (the “ Retirement Date ”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1287098/000155837023019718/0001558370-23-019718-index.htm
- Executive change
  Maher Masoud was appointed as President and Chief Executive Officer at MAXCYTE, INC..
  - Action: appointed
  - Role: President and Chief Executive Officer
  source text: On December 10, 2023, the Board appointed Maher Masoud, currently the Company’s Executive Vice President, General Couns...
  evidence_url: https://www.sec.gov/Archives/edgar/data/1287098/000155837023019718/0001558370-23-019718-index.htm

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