WESTPORT FUEL SYSTEMS INC.

WPRTNASDAQ

$1.84-0.04 (-2.13% today)

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

WESTPORT FUEL SYSTEMS INC. price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 6, 2026. Price (-19.3%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
Heights Capital Management, Inc	7.63%	$2.99M	0.69%	New Not reported
Royce & Associates LP	6.51%	$2.56M	0.02%	Not reported
Grace & White Inc	4.11%	$1.61M	0.26%	Not reported
Baird Financial Group, Inc.	0.81%	$316K	0.00%	Reduce 14.57%
Citadel Advisors LLC	0.52%	$203K	0.00%	Not reported
US Bancorp \de\	0.42%	$165K	0.00%	Not reported
Goldman Sachs Group Inc	0.18%	$71.5K	0.00%	Not reported
Cambridge Investment Research Advisors, Inc.	0.14%	$54K	0.00%	Not reported
UBS Group AG	0.11%	$43.7K	0.00%	Not reported
TD Waterhouse Canada Inc.	0.10%	$38.3K	0.00%	Not reported
Susquehanna International Group, LLP	0.10%	$40.7K	0.00%	Not reported
Jane Street Group, LLC	0.08%	$31.5K	0.00%	Not reported
LPL Financial LLC	0.06%	$25.5K	0.00%	Not reported
Royal Bank of Canada	0.03%	$13K	0.00%	Not reported
Morgan Stanley	0.02%	$8.53K	0.00%	Not reported
Tower Research Capital LLC (TRC)	0.01%	$5.84K	0.00%	Not reported
Wells Fargo & Company	0.01%	$3.87K	0.00%	Not reported
Simplex Trading, LLC	0.01%	$3.63K	0.00%	Not reported
Allworth Financial LP	0.01%	$2.32K	0.00%	Not reported
SWAN Capital LLC	0.01%	$2.26K	0.00%	Not reported
Jones Financial Companies LLLP	0.00%	$1.75K	0.00%	Not reported
Osaic Holdings, Inc.	0.00%	$1.32K	0.00%	Not reported
Ascentis Wealth Management, LLC	0.00%	$904	0.00%	Not reported
HighMark Wealth Management LLC	0.00%	$791	0.00%	Not reported
Country Trust Bank	0.00%	$497	0.00%	Not reported
Deutsche Bank Ag\	0.00%	$416	0.00%	Not reported
Gen-Wealth Partners Inc	0.00%	$194	0.00%	Not reported
Thompson Investment Management, Inc.	0.00%	$136	0.00%	Reduce 52.00%
CBIZ Investment Advisory Services, LLC	0.00%	$82	0.00%	Not reported
SBI Securities Co., Ltd.	0.00%	$79	0.00%	Not reported
Rockefeller Capital Management L.P.	0.00%	$68	0.00%	Not reported
Golden State Wealth Management, LLC	0.00%	$68	0.00%	Not reported
Harbour Investments, Inc.	0.00%	$61	0.00%	Not reported
Delta Asset Management LLC	0.00%	$34	0.00%	Not reported
Avalon Trust Co	0.00%	$30	0.00%	Not reported
Brown Brothers Harriman & Co	0.00%	$23	0.00%	Not reported
Caitong International Asset Management Co., Ltd	0.00%	$5	0.00%	Not reported
Caldwell Sutter Capital, Inc.	0.00%	$2	0.00%	Not reported
TSFG, LLC	0.00%	$0	0.00%	Not reported
Robinswood Financial LLC	0.00%	$2	0.00%	Not reported

End of history · 40 holders

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