---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-231568"
form_type: "8-K"
ticker: "SMTC"
cik: "0000088941"
company_name: "SEMTECH CORP"
filed_at: "2023-09-08T23:59:59+00:00"
generated_at: "2026-06-10T22:28:05.130526+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Semtech appoints Mark Lin as CFO; base salary $420k, $1.9M equity; CLO Ammann to separate Sep 25

## Summary
- Mark Lin appointed EVP and CFO, effective no later than Oct 4, 2023, succeeding Emeka Chukwu.
- Lin receives annual base salary of $420,000, target bonus 75% of base, and $1.9M stock unit award (50% RSUs, 50% PSUs).
- Lin gets $200,000 signing bonus (vests over 2 years) and severance terms including 1x salary (2x in change of control).
- Charles Ammann, EVP, Chief Legal Officer, to separate Sep 25; severance $410k cash, COBRA 12 months, RSU vesting through Mar 2025.

## SEC filing metadata
- accession: 0001193125-23-231568
- form_type: 8-K
- ticker: SMTC
- cik: 0000088941
- company_name: SEMTECH CORP
- filed_at: 2023-09-08T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/88941/000119312523231568/0001193125-23-231568-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/88941/000119312523231568/d485280d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-231568
- JSON: https://secwatch.observer/filing/0001193125-23-231568.json
- Plain text: https://secwatch.observer/filing/0001193125-23-231568.txt

## Key facts
- Executive change
  Mark Lin was appointed as Executive Vice President and Chief Financial Officer at SEMTECH CORP.
  - Action: appointed
  - Role: Executive Vice President and Chief Financial Officer
  source text: appointed Mark Lin to serve as the Company’s Executive Vice President and Chief Financial Officer effective as of a date, not later than October 4, 2023
  evidence_url: https://www.sec.gov/Archives/edgar/data/88941/000119312523231568/0001193125-23-231568-index.htm
- Executive change
  Emeka Chukwu departed as Executive Vice President and Chief Financial Officer at SEMTECH CORP.
  - Role: Executive Vice President and Chief Financial Officer
  source text: Emeka Chukwu, the Company’s current Executive Vice President and Chief Financial Officer, will continue to serve as Semtech’s Executive Vice President and Chief Financial Officer until the Transition Date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/88941/000119312523231568/0001193125-23-231568-index.htm

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