Alto CFO reports tax-withholding share disposition

Alto Ingredients, Inc. Chief Financial Officer Robert R. Olander reported a Form 4 transaction involving company common stock.

Rhea-AI Filing Summary

Alto Ingredients, Inc. Chief Financial Officer Robert R. Olander reported a Form 4 transaction involving company common stock. On this date, 41,072 shares were withheld upon vesting of restricted stock to cover withholding taxes, a non-market tax-withholding disposition. After this event, he directly held 253,086 common shares.

Insider Trade Summary

Exercise Price or Tax Liability: 41,072 shares

Exercise Price or Tax Liability 1 txn

Insider Olander Robert R.

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	41,072	$4.79	$197K

Holdings After Transaction: Common Stock — 253,086 shares (Direct)

Footnotes (1)

1. F1. Amount represents shares withheld upon vesting of restricted stock to cover withholding taxes.

Key Figures

Shares withheld for taxes: 41,072 shares Implied tax price per share: $4.79 per share Shares held after transaction: 253,086 shares +1 more

4 metrics

Shares withheld for taxes 41,072 shares Tax-withholding disposition on restricted stock vesting

Implied tax price per share $4.79 per share Value used for tax-withholding disposition

Shares held after transaction 253,086 shares Direct common stock ownership following Form 4 event

Tax-withholding transactions 1 transaction, 41,072 shares Summary of Form 4 tax-withholding activity

Key Terms

restricted stock, withholding taxes, tax-withholding disposition, Form 4

4 terms

restricted stock financial

"Amount represents shares withheld upon vesting of restricted stock to cover withholding taxes."

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

withholding taxes financial

"Amount represents shares withheld upon vesting of restricted stock to cover withholding taxes."

Withholding taxes are amounts a payer or government takes out of payments — such as wages, interest, or dividends — before the recipient gets the money, functioning like a cashier keeping part of a bill to pay taxes on your behalf. For investors this matters because it reduces the cash they actually receive, affects net returns and yield calculations, and may require additional paperwork or treaty claims to recover or offset the withheld amount against final tax bills.

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Alto Ingredients (ALTO) report for Robert R. Olander?

Alto Ingredients reported that CFO Robert R. Olander had 41,072 common shares withheld upon vesting of restricted stock to cover tax obligations. This was recorded as a tax-withholding disposition rather than an open-market purchase or sale of shares.

Was the ALTO Form 4 transaction an open-market sale of shares?

No, the ALTO Form 4 shows a tax-withholding disposition, not an open-market sale. 41,072 shares were withheld by the company when restricted stock vested to satisfy withholding taxes, meaning the insider did not independently sell those shares in the market.

How many Alto Ingredients (ALTO) shares were involved in the tax withholding?

A total of 41,072 Alto Ingredients common shares were withheld in the transaction. These shares were used to cover withholding taxes triggered by the vesting of restricted stock, according to the disclosure and accompanying footnote in the Form 4 filing.

How many Alto Ingredients (ALTO) shares does the CFO hold after this Form 4?

Following the tax-withholding transaction, CFO Robert R. Olander directly holds 253,086 Alto Ingredients common shares. This figure reflects his remaining direct ownership after 41,072 shares were withheld to satisfy tax liabilities related to restricted stock vesting.

What does transaction code "F" mean in the ALTO Form 4 filing?

Transaction code "F" in the ALTO Form 4 indicates shares were disposed of to pay an exercise price or tax liability. In this case, 41,072 shares of restricted stock were withheld upon vesting specifically to cover withholding taxes, not through a discretionary market trade.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/03/2026 - 01:42 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Olander Robert R.

(Last) (First) (Middle)

1300 SOUTH SECOND STREET

(Street)

PEKIN ILLINOIS 61554

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Alto Ingredients, Inc. [ ALTO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	04/01/2026		F		41,072(1)	D	$4.79	253,086	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Amount represents shares withheld upon vesting of restricted stock to cover withholding taxes.

	/s/ Robert R. Olander	04/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)