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AI brief of an SEC Form 8-K · Wintrust Financial (WTFC)

Wintrust Financial director Richard Postma resigns from board, effective immediately

Neutral Impact 2 of 5 leadership Written later

Wintrust Financial Corp. disclosed that director Richard L. Postma resigned from its Board of Directors on June 11, 2025, effective immediately. The company said he resigned for personal reasons and not because of any disagreement over its operations, policies or practices.

Key points

  • Director Richard L. Postma submitted his resignation on June 11, 2025.
  • The resignation took effect immediately.
  • The company states it was for personal reasons, with no disagreement on operations, policies or practices.
  • The 8-K was signed by Kathleen M. Boege on June 13, 2025.

The filing

CompanyWintrust Financial (WTFC)
Form8-K, current report
Filed with the SECJun 13, 2025, 5:02 PM ET
Accession number0001015328-25-000140

Items reported: 5.02 Director / Officer Change

Read the filing on SEC.gov ↗

Written by AI (Anthropic Claude, claude-haiku-5-5) on Nov 8, 2026, 12:56 AM ET, from the text of the filing and its press-release exhibits only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on June 13, 2025.

Briefs are written by AI from the filing text (each brief's own page names the model) and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the model's reading of the filing for shareholders, not a price forecast. Not investment advice.