4 new appointments

Method

Headline: appointment records with a stated Chief AI Officer or equivalent Head of AI title, grouped by stated announcement date (posted_at), Monday–Sunday. Combined chief AI titles and role-level appointments count; listings, departures and undated appointments do not. Dates are never substituted from capture or effective dates.

The stated title names a Chief AI Officer: any “chief … AI (or artificial intelligence) … officer” title, including combined titles such as Chief Data and AI Officer, the abbreviation CAIO, or Head of AI.

Secondary base: every record on the board (listings, appointments and departures at Global 2000 companies; open, closed and unknown status) whose capture date is on or before the Sunday that ends the week. Capture dates are read in UTC.

“Not stated” means the record’s reports_to field is not_stated: the public source names no reporting line. The stat counts what sources say, not how companies are organised.

Historical counts are reconstructed, not frozen snapshots. Computed at build time from the current board (data/records). A record later removed from coverage counts in no week; a correction changes every week it touches. Nothing is estimated or typed by hand.

Headline: 4 qualifying appointments announced Sep 21, 2026–Sep 27, 2026. Secondary: 41 records captured on or before Sep 27, 2026; 27 have reports_to = not_stated. Share = 27 ÷ 41, rounded to the nearest percent.