13D·WATCH Activist + Insider Intelligence Live feed Blog About Pilot
ISSUER PROFILE · CIK 0001370416

WESTPORT FUEL SYSTEMS INC.WPRT

5 13D/G filings 2 distinct filers 0 insider transactions (365d)

Cross-Reference Snapshot

Activist filings
5
5 SC
Distinct filers
2
multi-activist cluster
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
28.03
as of 2026-05-29

13D/G Filings Timeline · 5 total

FiledFormFilerStakeSharesIntent
2021-06-09 SC DOUGLAS KEVIN view →
2021-03-30 SC DOUGLAS KEVIN view →
2020-12-10 SC Yu Peter view →
2020-05-04 SC DOUGLAS KEVIN view →
2018-01-12 SC DOUGLAS KEVIN view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-05-29 724,004 28.03 -1.1%
2026-05-15 732,406 24.73 -2.4%
2026-04-30 750,472 13.13 -11.9%
2026-04-15 852,310 24.34 -3.2%
2026-03-31 880,615 24.31 -7.0%
2026-03-13 946,919 30.49 -1.2%
2026-02-27 958,662 32.65 -1.7%
2026-02-13 975,385 15.91 -1.4%
2026-01-30 989,213 11.33 +2.0%
2026-01-15 970,207 9.83 -2.6%
2025-12-31 996,202 8.70 +14.2%
2025-12-15 872,557 10.80 +7.5%

Alert me when any activist files on WESTPORT FUEL SYSTEMS INC.

Free. We email you when criteria match. One-click unsubscribe in every email.

Track every activist who touches this name.

Custom alerts · full feed · daily intelligence · API. $1,500/mo. Pilots welcome.

Request a pilot →