Delek US holder plans $407K stock sale

Form 144 reports a potential resale by Amber Russell of 5,392 DK common shares acquired via restricted stock vesting.

Rhea-AI Filing Summary

Delek US Holdings, Inc. (DK) is the issuer of common stock for which a notice on Form 144 has been filed in connection with a potential resale by Amber Russell. The notice covers 5,392 shares of common stock, held at Fidelity Brokerage Services LLC and acquired through restricted stock vesting as compensation.

The filing lists an aggregate market value of $407,096.00 for these shares and references 61,232,174 shares of common stock outstanding on the New York Stock Exchange as of September 11, 2026. The Form 144 is signed by Joshua Schmitt on behalf of Fidelity Brokerage Services LLC as attorney-in-fact for Amber Russell.

Key Figures

Shares to be sold: 5,392 shares Aggregate market value of shares to be sold: $407,096.00 Shares outstanding: 61,232,174 shares +1 more

4 metrics

Shares to be sold 5,392 shares Common stock for the account of Amber Russell under Form 144

Aggregate market value of shares to be sold $407,096.00 Market value reported for the 5,392 DK common shares

Shares outstanding 61,232,174 shares Delek US Holdings, Inc. common stock outstanding as of September 11, 2026

Form type Form 144 Notice of proposed sale of Delek US Holdings, Inc. common stock

Key Terms

Rule 144, restricted stock vesting, attorney-in-fact

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted stock vesting financial

"Common | 09/10/2026 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

attorney-in-fact regulatory

"as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

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

What does the Form 144 filing related to DK disclose?

It discloses a planned resale under Rule 144 for 5,392 shares of Delek US Holdings, Inc. common stock held for the account of Amber Russell, with an aggregate market value of $407,096.00, acquired through restricted stock vesting as compensation.

How many Delek US Holdings (DK) shares are covered by this Form 144?

The notice covers 5,392 shares of Delek US Holdings, Inc. common stock. These shares are held at Fidelity Brokerage Services LLC and are associated with restricted stock vesting listed as compensation.

What aggregate market value is reported for the DK shares in this Form 144?

The Form 144 reports an aggregate market value of $407,096.00 for the 5,392 shares of Delek US Holdings, Inc. common stock to be sold for the account of Amber Russell.

How many DK shares are reported as outstanding in the Form 144?

The filing references 61,232,174 shares of Delek US Holdings, Inc. common stock outstanding on the New York Stock Exchange as of September 11, 2026; this is a baseline figure and not the amount covered by the notice.

Who signed the Form 144 related to Delek US Holdings (DK)?

The Form 144 is signed by Joshua Schmitt, described as a duly authorized representative of Fidelity Brokerage Services LLC, acting as attorney-in-fact for Amber Russell.

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

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Available on EDGAR 09/11/2026 - 04:42 PM Accepted by SEC EDGAR 09/11/2026 - 04:41 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002130310
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Delek US Holdings, Inc.
SEC File Number	001-38142
Address of Issuer	310 SEVEN SPRINGS WAY SUITE 500 BRENTWOOD TENNESSEE 37027
Phone	615-771-6701
Name of Person for Whose Account the Securities are To Be Sold	Russell Amber
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	5392	407096.00	61232174	09/11/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/10/2026	Restricted Stock Vesting	Issuer			5392	09/10/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	09/11/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Joshua Schmitt, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Amber Russell.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)