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Disclosery

Altar Rock LLC: AMG position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Altar Rock LLC on AMG, newest first. How the timeline and the estimate are built.

Altar Rock LLC held 10,722 AMG shares at 2026-06-30 per its 13F-HR filed 2026-09-21.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 10,722 shares
    Change vs previous 13F -2,747 shares

    5.3% of the 13F portfolio, value $3,628,326.

    13F-HR 0002085853-26-001098 filed by Altar Rock LLC
    Accepted , ingested

  2. period ended2026-03-31
    13F 13,469 shares
    Change vs previous 13F -2,073 shares

    4.37% of the 13F portfolio, value $3,726,770.

    13F-HR 0002085853-26-001097 filed by Altar Rock LLC
    Accepted , ingested

  3. period ended2025-12-31
    13F 15,542 shares
    Change vs previous 13F not available

    5.37% of the 13F portfolio, value $4,480,342.

    13F-HR 0002085853-26-001096 filed by Altar Rock LLC
    Accepted , ingested