William Blair had three ADV categories observed; 194 daily firm filing observations

William Blair & Company L.L.C. had Part 1, Part 2 brochure and client relationship summary categories observed on October 16. The observation date is not necessarily the date the firm submitted a filing, and the categories alone do not establish that document content changed.

Across October 16–18, 2026, the total was 194 daily firm filing observations. Part 1 accounted for 194 observations, Part 2 brochures for 102 and client relationship summaries for 70; these category counts overlap. The daily count was 186 on October 16 and eight on October 17.

Vanguard Group Inc. had a Part 1 category observed on October 16. Ascentis Independent Advisors, LLC had Part 1, Part 2 brochure and client relationship summary categories observed on October 17. These are filing observations, not proof of substantive document changes.

ADV filing observations

The appendix lists all 194 daily firm filing observations from 10/16/2026 through 10/18/2026. An observation can include multiple document categories and does not by itself prove a substantive document change.