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GRIZZLYROCK CAPITAL, LLC: MGNI position timeline

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

GRIZZLYROCK CAPITAL, LLC held 1,164,628 MGNI shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,164,628 shares
    Change vs previous 13F -74,052 shares

    15.46% of the 13F portfolio, value $22,104,639.

    13F-HR 0001214659-26-010367 filed by GRIZZLYROCK CAPITAL, LLC
    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 1,238,680 shares
    Change vs previous 13F +666,774 shares

    11.65% of the 13F portfolio, value $14,715,518.

    13F-HR 0001214659-26-006454 filed by GRIZZLYROCK CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-12-31
    13F 571,906 shares
    Change vs previous 13F +181,000 shares

    6.95% of the 13F portfolio, value $9,282,034.

    13F-HR 0001214659-26-001965 filed by GRIZZLYROCK CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-09-30
    13F 390,906 shares
    Change vs previous 13F -583,417 shares

    6.61% of the 13F portfolio, value $8,513,933.

    13F-HR 0001214659-25-016622 filed by GRIZZLYROCK CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 974,323 shares
    Change vs previous 13F +75,782 shares

    17.67% of the 13F portfolio, value $23,500,671.

    13F-HR 0001214659-25-012216 filed by GRIZZLYROCK CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 898,541 shares
    Change vs previous 13F +35,000 shares

    9.3% of the 13F portfolio, value $10,252,353.

    13F-HR 0001214659-25-007821 filed by GRIZZLYROCK CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-12-31
    13F 863,541 shares
    Change vs previous 13F -4,630 shares

    14.36% of the 13F portfolio, value $13,747,573.

    13F-HR 0001214659-25-002832 filed by GRIZZLYROCK CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 868,171 shares
    Change vs previous 13F not available

    10.37% of the 13F portfolio, value $12,024,168.

    13F-HR 0001214659-24-019129 filed by GRIZZLYROCK CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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