secwatch.observer — SEC 8-K summary ====================================== Issuer: SUN COMMUNITIES INC (SUI) CIK: 0000912593 Form: 8-K Filed at: 2026-03-27T23:59:59+00:00 Accession: 0000912593-26-000129 Event type: other_material Sentiment: neutral Materiality: 0.30 Item codes: 4.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Sun Communities appoints Deloitte as new auditor, dismisses Grant Thornton -------------------------------------------------------------------------- - Audit Committee dismissed Grant Thornton and appointed Deloitte as independent auditor, effective upon Q1 2026 10-Q filing. - Grant Thornton's audit reports for FY 2024 and 2025 were unqualified with no adverse opinions. - No disagreements with Grant Thornton; a previously disclosed material weakness in ICFR (remediated in 2025) was the only reportable event. - Grant Thornton agreed with the disclosures via letter dated March 27, 2026, filed as Exhibit 16.1. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/912593/000091259326000129/0000912593-26-000129-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/912593/000091259326000129/sui-20260323.htm HTML page: https://secwatch.observer/filing/0000912593-26-000129 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer