William Blair Investment Management, LLC filed Amendment No. 3 to its beneficial ownership statement with the SEC on November 6, 2026, disclosing that it held zero shares of Baldwin Insurance Group, Inc. common stock as of September 30, 2026.

Key Highlights

  • Reporting person: William Blair Investment Management, LLC, organized in Delaware and classified as an investment adviser (IA)
  • Triggering event date: September 30, 2026, the date that required this amended filing
  • Beneficial ownership: 0 shares reported, representing 0.0% of Baldwin Insurance Group common stock
  • Voting and dispositive power: Sole voting, shared voting, sole dispositive, and shared dispositive power each reported as 0
  • Issuer: Baldwin Insurance Group, Inc., headquartered at 4211 W. Boy Scout Blvd., Tampa, Florida 33607
  • Signed by: Telmo Martins, Chief Compliance Officer of William Blair Investment Management, LLC, on November 6, 2026

William Blair Discloses Full Exit from Baldwin Insurance Group Position

According to the filing, William Blair Investment Management, LLC, a Delaware-organized entity operating as a registered investment adviser with offices at 150 North Riverside Plaza, Chicago, IL 60606, submitted Amendment No. 3 to its ownership statement covering Baldwin Insurance Group, Inc. (NASDAQ:BWIN) common stock (CUSIP 05589G102). The amendment reflects a triggering event dated September 30, 2026, after which the firm reported holding no beneficial interest in the issuer's shares.

The filing discloses that William Blair held zero shares in aggregate, with all four categories of power - sole voting, shared voting, sole dispositive, and shared dispositive - each reported as zero. The firm's ownership is therefore listed at 0.0% of the class, satisfying the threshold described under Item 5 of the form as "ownership of 5 percent or less of a class." Baldwin Insurance Group, an insurance-focused company based in Tampa, Florida, has its common stock identified under the CUSIP number 05589G102 in the filing.

The certification accompanying the filing, signed by Telmo Martins as Chief Compliance Officer, states that the securities "were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer." Items 6 through 9, covering ownership on behalf of another person, subsidiary identification, and group membership, were each marked "Not Applicable."

What Was Disclosed

William Blair Investment Management, LLC filed Amendment No. 3 to its Schedule 13G on November 6, 2026, reporting zero beneficial ownership of Baldwin Insurance Group, Inc. common stock as of September 30, 2026, with no voting or dispositive power of any kind retained.