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ARDSLEY ADVISORY PARTNERS LP: WULF position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of ARDSLEY ADVISORY PARTNERS LP on WULF, newest first. How the timeline and the estimate are built.

ARDSLEY ADVISORY PARTNERS LP held 966,000 WULF shares at 2026-06-30 per its 13F-HR filed 2026-07-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 966,000 shares
    Change vs previous 13F -84,000 shares

    2.57% of the 13F portfolio, value $23,686,320.

    13F-HR 0001172661-26-002590 filed by ARDSLEY ADVISORY PARTNERS LP
    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 1,050,000 shares
    Change vs previous 13F -115,000 shares

    2.3% of the 13F portfolio, value $15,120,000.

    13F-HR 0001172661-26-002039 filed by ARDSLEY ADVISORY PARTNERS LP
    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 1,165,000 shares
    Change vs previous 13F -35,000 shares

    1.7% of the 13F portfolio, value $13,385,850.

    13F-HR 0001172661-26-000864 filed by ARDSLEY ADVISORY PARTNERS LP
    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 1,200,000 shares
    Change vs previous 13F -450,000 shares

    2.11% of the 13F portfolio, value $13,739,880.

    13F-HR 0001172661-25-004897 filed by ARDSLEY ADVISORY PARTNERS LP
    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 1,650,000 shares
    Change vs previous 13F -1,325,000 shares

    1.18% of the 13F portfolio, value $7,227,000.

    13F-HR 0001172661-25-003308 filed by ARDSLEY ADVISORY PARTNERS LP
    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 2,975,000 shares
    Change vs previous 13F +1,025,000 shares

    1.88% of the 13F portfolio, value $8,121,750.

    13F-HR 0001172661-25-002033 filed by ARDSLEY ADVISORY PARTNERS LP
    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 1,950,000 shares
    Change vs previous 13F -8,000 shares

    2.12% of the 13F portfolio, value $10,959,000.

    13F-HR 0001172661-25-000980 filed by ARDSLEY ADVISORY PARTNERS LP
    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 1,958,000 shares
    Change vs previous 13F not available

    1.73% of the 13F portfolio, value $9,163,440.

    13F-HR 0001172661-24-004816 filed by ARDSLEY ADVISORY PARTNERS LP
    Filed (acceptance time not in the bulk data set), ingested

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