Alto Ingredients, Inc. — Director's Dealing 2021

May 19, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alto Ingredients, Inc. (ALTO)
CIK: 0000778164
Period of Report: 2021-05-17

Reporting Person: NATHAN GILBERT E (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-17	Common Stock	P	7325	$5.11	Acquired	235426	Direct
2021-05-17	Common Stock	P	6200	$5.09	Acquired	26200	Indirect
2021-05-18	Common Stock	P	66134	$5.65	Acquired	301560	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.095 to $5.1093, inclusive. The reporting person undertakes to provide to Alto Ingredients, Inc., any security holder of Alto Ingredients, Inc., 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 footnotes (1), (2) and (3) to this Form 4.

F2: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.08 to $5.1099, inclusive.

F3: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.5696 to $5.73, inclusive.