$ALTO

$3.66 +$0.05 (1.39%) Close

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

Ownership

13F as of Q2 2026 · 77.6M shares outstanding

Who owns ALTO?

By type of holder

Institutions 46.2% Insiders 4.5% Everyone else 49.3%

Concentration Top 10 holders own 31.4%

BlackRock, Inc. 7.1% · Radoff Bradley Louis 4.7%

Institutional ownership

46.2%

+4.7 pts vs last qtr

Institutional holders

130

+28 vs last qtr

Net shares bought

+3.7M

by institutions in Q2 2026

New / sold out

55 / 27

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

BlackRock, Inc. +4.2M
Acadian Asset Management LLC +1.5M

Biggest sellers in Q2 2026

Marshall Wace, LLP SOLD OUT −3.3M
Millennium Management LLC −1.7M

Who is planning to sell?

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

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+178979.8%

+129.85% a year

Each share's claim on the business

−99.9%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$5M vs $32.9M

over 10 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+ years51% 3–5 years8% 1–3 years6% Under 1 year35%

Quarterly turnover

45.6%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting ALTO on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	5.5M	7.08%	+4.2M (+323.3%)	≤2021	0.0%
Shares held by quarter Peak holding5.5M (Q2'26) Change over 8 quarters+3.4M Share of the company7.080% BlackRock, Inc.'s full portfolio →
MW Marshall Wace, LLP	—	—	SOLD OUT	—	0.0%
Shares held by quarter Peak holding3.3M (Q1'26) Change over 8 quarters0 Marshall Wace, LLP's full portfolio →

BlackRock, Inc.

5.5M

% of company

7.08%

Change vs last qtr

+4.2M (+323.3%)

Held since

≤2021

Marshall Wace, LLP

—

% of company

—

Change vs last qtr

SOLD OUT

Held since

—

28 more super investors behind a free account

See every manager holding Alto Ingredients Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting ALTO on Form N-PORT; together they hold 15.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$12.7M	2.2M	2.88%	0.00%	June 30, 2026
IR iShares Russell 2000 ETF iShares Trust	$10.8M	1.9M	2.44%	0.01%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$12.7M

% of company

2.88%

% of the fund

0.00%

As of

June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$10.8M

% of company

2.44%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Alto Ingredients 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
RB Radoff Bradley Louis 5%+ holder 13D · 4.7%	3.6M	4.67%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company4.670% Disclosed stake13D · 4.7% View the 13D/G filing →
TM Torok Michael 5%+ holder 13D · 1.7%	1.3M	1.68%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company1.680% Disclosed stake13D · 1.7% View the 13D/G filing →

Radoff Bradley Louis

5%+ holder13D · 4.7%

3.6M

% of company

4.67%

Change vs last qtr

—

Held since

—

Torok Michael

5%+ holder13D · 1.7%

1.3M

% of company

1.68%

Change vs last qtr

—

Held since

—

12 more holders behind a free account

See every insider and 5%+ holder of Alto Ingredients Inc.

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