Warren Buffett has served Berkshire since 1965.

True: Buffett took a role at Berkshire Hathaway in 1965 (control, director, chairman or similar) and still held a role there on 2026-09-18. Mostly true: his service began in 1965 but the details are slightly off, e.g. he had left every formal post shortly before the statement or there was a short break in service. Mostly false: his service began in a different year close to 1965 (e.g. he was buying shares from 1962 but held no role until later). False: his service did not begin around 1965, or he had no connection to Berkshire as stated.

Set before the research began.

1. E1 DEF 14A U.S. Securities and Exchange Commission (filed by Berkshire Hathaway Inc.) · 3 February 2026 Own record

   “WARREN E. BUFFETT, age 95, has been a director and the controlling shareholder of the Corporation since 1965 and has been its Chairman since 1970.”

2. E2 DEF 14A U.S. Securities and Exchange Commission (filed by Berkshire Hathaway Inc.) · 3 February 2026 Own record

   “Until December 31, 2025, Warren E. Buffett was Berkshire's Chief Executive Officer and Chairman of the Board of Directors. As previously announced, Gregory E. Abel succeeded Warren Buffett as Berkshire's Chief Executive Officer on January 1, 2026. Mr. Buffett continues to be the Chairman of the Board of Directors.”

3. E3 A Timeline of Warren Buffett's Life and Berkshire Hathaway Kiplinger · 21 August 2025

   “1965: Buffett takes control of struggling textile manufacturer Berkshire Hathaway – ironically, a purchase he would later deem "my first mistake."”

Berkshire's 2026 proxy statement says Buffett has been a director and the controlling shareholder since 1965 and Chairman since 1970 (E1). Kiplinger, an independent source, also dates his taking control of Berkshire Hathaway to 1965 (E3). The same proxy says he stepped down as CEO at the end of 2025 but was still Chairman when it was filed in February 2026 (E2). None of the evidence shows him leaving that post before 2026-09-18, although nothing dated after February 2026 directly confirms he still held it on that date.