---
schema_version: "secwatch.filing_event.v1"
accession: "0001635282-26-000060"
form_type: "8-K"
ticker: "RMNI"
cik: "0001635282"
company_name: "Rimini Street, Inc."
filed_at: "2026-08-12T12:50:20+00:00"
generated_at: "2026-08-12T12:55:04.066061+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Rimini Street appoints Keith Costello as EVP & COO effective Aug 17, 2026

## Summary
- Costello, 60, joins from DXC where he was President, Enterprise Applications; earlier IBM GM Global SAP Business.
- Base salary $460,000; target bonus 81.74% of salary under Cash Bonus Plan.
- Onboarding equity: 150,000 stock options and 150,000 RSUs, each vesting over 3 years.
- From 2027, LTI plan awards set at 50% of CEO's target grant value.
- Severance: 12 months salary + target bonus on termination without cause or for good reason; full equity vesting within 24 months post-change-of-control.

## SEC filing metadata
- accession: 0001635282-26-000060
- form_type: 8-K
- ticker: RMNI
- cik: 0001635282
- company_name: Rimini Street, Inc.
- filed_at: 2026-08-12T12:50:20+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1635282/000163528226000060/0001635282-26-000060-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1635282/000163528226000060/rmni-20260812.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001635282-26-000060
- JSON: https://secwatch.observer/filing/0001635282-26-000060.json
- Plain text: https://secwatch.observer/filing/0001635282-26-000060.txt

## Key facts
- Executive change
  Keith C. Costello was appointed as Executive Vice President and Chief Operating Officer at Rimini Street, Inc..
  - Action: appointed
  - Role: Executive Vice President and Chief Operating Officer
  source text: On August 8, 2026, the Board of Directors (the “ Board ”) of Rimini Street, Inc. (the “ Company ”) appointed Mr. Keith C. Costello, age 60, as its Executive Vice President and Chief Operating Officer, with such appointment to be effective as of August 17, 2026.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1635282/000163528226000060/0001635282-26-000060-index.htm

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