$AETR

$2.22 -$0.02 (0.89%) Close

$AETR Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 17.4M shares outstanding

Who owns AETR?

By type of holder

Institutions 13.2% Everyone else 86.8%

No insider has reported a holding in the last two years, so insiders are counted in "Everyone else".

Concentration Top 10 holders own 23.3%

Kevin Douglas 10.5% · Royce & Associates LP 6.5%

Institutional ownership

13.2%

+0.9 pts vs last qtr

Institutional holders

0 vs last qtr

Net shares bought

+159.1K

by institutions in Q2 2026

New / sold out

6 / 6

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Royce & Associates LP +639.6K
HRT Financial LP NEW +13.3K

Biggest sellers in Q2 2026

Grace & White Inc /ny −292.6K
US Bancorp \de\ −93.7K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Westport Fuel Systems Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2022–FY2025

+1.3%

+0.43% a year

Each share's claim on the business

−1.3%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $4.91M

over 4 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years48% 1–3 years1% Under 1 year51%

Quarterly turnover

27.2%

of institutional shares changed hands

Top 10 managers, median time held

3 years

Super Investors

Investment managers reporting AETR on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
RA Royce & Associates LP	1.1M	6.51%	+639.6K (+130.0%)	Q4 '25	0.0%
Shares held by quarter Peak holding1.1M (Q2'26) Change over 8 quarters+1.1M Share of the company6.510% Royce & Associates LP's full portfolio →
GW Grace & White Inc /ny	714.1K	4.11%	−292.6K (−29.1%)	2023	0.3%
Shares held by quarter Peak holding1.2M (Q4'25) Change over 8 quarters−30.1K Share of the company4.110% Grace & White Inc /ny's full portfolio →

Royce & Associates LP

1.1M

% of company

6.51%

Change vs last qtr

+639.6K (+130.0%)

Held since

Q4 '25

Grace & White Inc /ny

714.1K

% of company

4.11%

Change vs last qtr

−292.6K (−29.1%)

Held since

2023

28 more super investors behind a free account

See every manager holding Westport Fuel Systems Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting AETR on Form N-PORT; together they hold 6.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
RM Royce Micro-Cap Trust, Inc. Royce Micro-Cap Trust, Inc.	$1.6M	706.3K	4.06%	0.18%	June 30, 2026
RM Royce Micro-Cap Fund Royce Fund	$706K	312.2K	1.80%	0.16%	June 30, 2026

Royce Micro-Cap Trust, Inc.

Position value

$1.6M

% of company

4.06%

% of the fund

0.18%

As of

June 30, 2026

Royce Micro-Cap Fund

Royce Fund

Position value

$706K

% of company

1.80%

% of the fund

0.16%

As of

June 30, 2026

2 more funds behind a free account

See every fund holding Westport Fuel Systems Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
KD Kevin Douglas 5%+ holder 13D · 10.5%	1.8M	10.46%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company10.460% Disclosed stake13D · 10.5% View the 13D/G filing →

Kevin Douglas

5%+ holder13D · 10.5%

1.8M

% of company

10.46%

Change vs last qtr

—

Held since

—

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