MPC (NYSE: MPC) files Form 144 for 1,372 and 4,964-share notices

Rhea-AI Filing Summary

MPC filed a Form 144 notice reporting proposed dispositions of Common Stock. The notice lists 1,372 shares tied to a Restricted Stock Vesting event dated 03/01/2026 and 4,964 shares tied to a Stock Option Exercise dated 06/04/2026. The filing names Fidelity Brokerage Services LLC and includes an amount listed as $1,703,271.93 alongside other identifying numbers and the exchange NYSE.

Insights

Securities Compliance Counsel

Form 144 is a notice of proposed resale under Rule 144; it lists specific share lots and sale methods.

The filing records two distinct lots: 1,372 shares from restricted stock vesting on 03/01/2026 and 4,964 shares from a stock option exercise on 06/04/2026. It names Fidelity Brokerage Services LLC as the broker and shows an associated monetary figure of $1,703,271.93 in the same row of identifiers.

Rule 144 notices are administrative disclosures of proposed sales; actual sale execution depends on subsequent transactions and compliance with Rule 144 conditions. Subsequent filings or brokerage confirmations would show completed transactions.

Key Figures

Restricted stock lot: 1,372 shares Option exercise lot: 4,964 shares Listed monetary figure: $1,703,271.93

3 metrics

Restricted stock lot 1,372 shares Restricted Stock Vesting on <date>03/01/2026</date>

Option exercise lot 4,964 shares Stock Option Exercise on <date>06/04/2026</date>

Listed monetary figure $1,703,271.93 Amount shown in filer row alongside broker and exchange identifiers

Key Terms

Rule 144, Restricted Stock Vesting, Stock Option Exercise

3 terms

Rule 144 regulatory

"Restricted Stock Vesting | Issuer | 1372 | 03/01/2026"

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 | 03/01/2026 | 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.

Stock Option Exercise financial

"Stock Option Exercise | Issuer | 4964 | 06/04/2026 | Cash"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	6336	1703271.93	291936635	06/04/2026	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	03/01/2026	Restricted Stock Vesting	Issuer			1372	03/01/2026	Compensation
Common	06/04/2026	Stock Option Exercise	Issuer			4964	06/04/2026	Cash

* 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

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does MPC's Form 144 disclose?

It discloses proposed dispositions of common stock totaling two lots: 1,372 and 4,964 shares. The notice lists vesting on 03/01/2026 and an option exercise on 06/04/2026, and names Fidelity Brokerage Services LLC.

Does MPC's Form 144 show completed sales?

No; Form 144 is a notice of proposed resale, not proof of sale. The filing lists the lots and sale method entries but does not itself evidence executed market trades.

Which share lots are identified in the MPC notice?

The filing identifies 1,372 shares from a Restricted Stock Vesting event and 4,964 shares from a Stock Option Exercise. Each lot is dated within the filing: 03/01/2026 and 06/04/2026.

Who is the broker listed on MPC's Form 144?

The notice lists Fidelity Brokerage Services LLC at 900 Salem Street, Smithfield, RI, as the broker associated with the transactions shown in the filing.

What is the monetary figure shown on the MPC filing?

The filing shows a numeric amount of $1,703,271.93 alongside other identifiers. The entry appears on the same line as the broker and exchange information in the provided excerpt.