---
schema_version: "secwatch.filing_event.v1"
accession: "0001441683-22-000030"
form_type: "8-K"
ticker: "APPN"
cik: "0001441683"
company_name: "APPIAN CORP"
filed_at: "2022-04-04T23:59:59+00:00"
generated_at: "2026-06-26T09:45:33.663110+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Appian appoints Mark Matheos CFO effective April 1, 2022; Mark Lynch retires

## Summary
- Mark Matheos named CFO, effective April 1, 2022; succeeds Mark Lynch who retired after 14 years.
- Matheos served as CAO since Dec 2021; salary $750k, target bonus $250k, RSU grant $510k vesting over 4 years.
- Retention bonuses: $330k (March 2023), $230k (March 2024), $130k (March 2025) plus matching RSU awards.
- Lynch will remain as advisor through Q2 2022 to ensure a smooth transition.

## SEC filing metadata
- accession: 0001441683-22-000030
- form_type: 8-K
- ticker: APPN
- cik: 0001441683
- company_name: APPIAN CORP
- filed_at: 2022-04-04T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1441683/000144168322000030/0001441683-22-000030-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1441683/000144168322000030/appn-20220404.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001441683-22-000030
- JSON: https://secwatch.observer/filing/0001441683-22-000030.json
- Plain text: https://secwatch.observer/filing/0001441683-22-000030.txt

## Key facts
- Executive change
  Mark Matheos was appointed as Chief Financial Officer at APPIAN CORP.
  - Action: appointed
  - Role: Chief Financial Officer
  source text: Mark Matheos has been appointed Chief Financial Officer of the Company, effective April 1, 2022
  evidence_url: https://www.sec.gov/Archives/edgar/data/1441683/000144168322000030/0001441683-22-000030-index.htm
- Executive change
  Mark Lynch departed as Chief Financial Officer at APPIAN CORP.
  - Action: succeeded
  - Role: Chief Financial Officer
  source text: Mr. Matheos succeeds Mark Lynch, who has served as the Company's Chief Financial Officer since October 2008.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1441683/000144168322000030/0001441683-22-000030-index.htm

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