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ARDSLEY ADVISORY PARTNERS LP: MIR position timeline

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

ARDSLEY ADVISORY PARTNERS LP held 325,000 MIR 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 325,000 shares
    Change vs previous 13F 0 shares

    0.63% of the 13F portfolio, value $5,827,250.

    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 325,000 shares
    Change vs previous 13F 0 shares

    0.92% of the 13F portfolio, value $6,041,750.

    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 325,000 shares
    Change vs previous 13F -3,220 shares

    0.97% of the 13F portfolio, value $7,611,500.

    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 328,220 shares
    Change vs previous 13F -135,000 shares

    1.17% of the 13F portfolio, value $7,634,397.

    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 463,220 shares
    Change vs previous 13F +288,220 shares

    1.63% of the 13F portfolio, value $9,973,127.

    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 175,000 shares
    Change vs previous 13F +50,000 shares

    0.59% of the 13F portfolio, value $2,537,500.

    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 125,000 shares
    Change vs previous 13F 0 shares

    0.42% of the 13F portfolio, value $2,181,250.

    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 125,000 shares
    Change vs previous 13F not available

    0.26% of the 13F portfolio, value $1,383,750.

    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).