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Trigran Investments, Inc.: AMPL position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Trigran Investments, Inc. on AMPL, newest first. How the timeline and the estimate are built.

Trigran Investments, Inc. held 2,321,209 AMPL shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,321,209 shares
    Change vs previous 13F +1,940,683 shares

    3.26% of the 13F portfolio, value $17,757,249.

    13F-HR 0001062993-26-004214 filed by Trigran Investments, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 380,526 shares
    Change vs previous 13F not available

    0.62% of the 13F portfolio, value $2,595,188.

    13F-HR 0001062993-26-002575 filed by Trigran Investments, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).