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Disclosery

Telemark Asset Management, LLC: ASPN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Telemark Asset Management, LLC on ASPN, newest first. How the timeline and the estimate are built.

Telemark Asset Management, LLC held 1,000,000 ASPN shares at 2026-06-30 per its 13F-HR filed 2026-08-10.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,000,000 shares
    Change vs previous 13F 0 shares

    0.46% of the 13F portfolio, value $6,340,000.

    13F-HR 0000898432-26-000612 filed by Telemark Asset Management, 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 1,000,000 shares
    Change vs previous 13F 0 shares

    0.32% of the 13F portfolio, value $3,420,000.

    13F-HR 0000898432-26-000352 filed by Telemark Asset Management, 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 1,000,000 shares
    Change vs previous 13F -792,424 shares

    0.28% of the 13F portfolio, value $2,830,000.

    13F-HR 0000898432-26-000088 filed by Telemark Asset Management, 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 1,792,424 shares
    Change vs previous 13F 0 shares

    1.18% of the 13F portfolio, value $12,475,271.

    13F-HR 0000898432-25-000879 filed by Telemark Asset Management, 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 1,792,424 shares
    Change vs previous 13F -100,000 shares

    1.13% of the 13F portfolio, value $10,611,150.

    13F-HR 0000898432-25-000586 filed by Telemark Asset Management, 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 1,892,424 shares
    Change vs previous 13F 0 shares

    1.58% of the 13F portfolio, value $12,092,589.

    13F-HR 0000898432-25-000335 filed by Telemark Asset Management, 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 1,892,424 shares
    Change vs previous 13F +400,000 shares

    2.24% of the 13F portfolio, value $22,481,997.

    13F-HR 0000898432-25-000102 filed by Telemark Asset Management, 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 1,492,424 shares
    Change vs previous 13F not available

    4.17% of the 13F portfolio, value $41,325,221.

    13F-HR 0000898432-24-000893 filed by Telemark Asset Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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