---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-098314"
form_type: "8-K"
ticker: null
cik: "0001389002"
company_name: "MARIN SOFTWARE INC"
filed_at: "2025-07-24T23:59:59+00:00"
generated_at: "2026-05-18T02:10:05.319580+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.9
calibrated_materiality_score: 0.9
confidence: "high"
source: SEC EDGAR
---

# Marin Software files Chapter 11, common stock delisted from Nasdaq, auditor Grant Thornton terminated

## Summary
- Filed voluntary Chapter 11 petition on July 1, 2025; case number 25-11263 in Delaware Bankruptcy Court.
- Common stock suspended from Nasdaq on June 26; Form 25 filed July 21, delisting effective July 31.
- On July 23, Board terminated Grant Thornton as independent auditor; no new auditor engaged yet.
- Company warns trading in common stock is highly speculative; stock no longer listed on Nasdaq.

## SEC filing metadata
- accession: 0000950170-25-098314
- form_type: 8-K
- cik: 0001389002
- company_name: MARIN SOFTWARE INC
- filed_at: 2025-07-24T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.9
- calibrated_materiality_score: 0.9
- confidence: high
- sec_items: 4.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1389002/000095017025098314/0000950170-25-098314-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1389002/000095017025098314/mrin-20250723.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-098314
- JSON: https://secwatch.observer/filing/0000950170-25-098314.json
- Plain text: https://secwatch.observer/filing/0000950170-25-098314.txt

## Source-grounded claims
- claim_id: c64ca12e73aaf546c8264be9172c21478f933e6f
  claim: MARIN SOFTWARE INC dismissed Grant Thornton LLP as its auditor.
  evidence_excerpt: On July 23, 2025 (the “Dismissal Date”), the Board of Directors of the Company (the “Board”), on the recommendation of the Audit Committee of the Board, terminated the engagement of Grant Thornton LLP (“GT”) as the Company’s independent registered public accounting firm, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1389002/000095017025098314/0000950170-25-098314-index.htm

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