Gilbert E. Nathan - 12 May 2026 Form 4 Insider Report for Alto Ingredients, Inc. (ALTO)

Reporting relationship: Director
Issuer ticker: ALTO
Reported as of: 12 May 2026
Net transaction value: +$114,450
SEC form: 4
Accepted by SEC: 14 May 2026, 16:15:18 UTC
Prior SEC filing: 17 Mar 2026
Next SEC filing: 25 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Gilbert E. Nathan

Key filing fact

Gilbert E. Nathan filed Form 4 for Alto Ingredients, Inc. (ALTO) on 14 May 2026.

Key facts

This page summarizes Gilbert E. Nathan's Form 4 filing for Alto Ingredients, Inc. (ALTO).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 14 May 2026, 16:15.

Change

Previous filing in this sequence was filed on 17 Mar 2026.
Current net transaction value: +$114,450.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001657622 Primary reporting owner

NATHAN GILBERT E

Relationship: Director
Address: 1300 SOUTH SECOND STREET, PEKIN
Signature: /s/ Gilbert E. Nathan
Signature date: 13 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ALTO transaction

Common Stock

Purchase

Transaction value: $92,200
Shares: +20,000
Change %: +2.7%
Price: $4.61
Shares after: 769,741
Date: 12 May 2026
Ownership: Direct
Footnotes: F1

ALTO transaction

Common Stock

Purchase

Transaction value: $22,250
Shares: +5,000
Change %: +0.65%
Price: $4.45
Shares after: 774,741
Date: 13 May 2026
Ownership: Direct

ALTO holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 31,200
Date: 12 May 2026
Ownership: by spouse

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The price reported is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $4.4965 to $4.775, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.