Form 144: Christopher Peetz to sell 20,000 shares

Christopher Peetz submitted a Form 144 reporting a proposed sale of 20,000 shares of Common Stock via a stock option exercise to be executed on 07/06/2026.

Rhea-AI Filing Summary

Christopher Peetz submitted a Form 144 reporting a proposed sale of 20,000 shares of Common Stock via a stock option exercise to be executed on 07/06/2026. The filing notes a prior sale of 30,000 shares on 06/01/2026.

Insights

Securities Compliance Attorney

Form 144 lists a planned disposition of 20,000 shares by exercise on 07/06/2026.

Form 144 is a notice of an intended sale under Rule 144. The filing identifies the method as a stock option exercise and specifies the intended sale date of 07/06/2026.

Cash‑flow treatment is stated as Cash in the excerpt. Subsequent Form 144 amendments or broker confirmations will disclose execution details and pricing.

Key Figures

Proposed shares to be sold: 20,000 shares Shares sold in past 3 months: 30,000 shares Transaction method: Stock Option Exercise

3 metrics

Proposed shares to be sold 20,000 shares to be sold via stock option exercise on 07/06/2026

Shares sold in past 3 months 30,000 shares sold on 06/01/2026

Transaction method Stock Option Exercise listed for the 07/06/2026 disposition

Key Terms

Form 144, Stock Option Exercise, Issuer

3 terms

Form 144 regulatory

"submitted a Form 144 reporting a proposed sale"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Option Exercise financial

"to be sold via a stock option exercise on 07/06/2026"

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.

Issuer regulatory

"Stock Option Exercise | ISSUER | 20000"

FAQ

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

What does Christopher Peetz's Form 144 for MIRM report?

The filing reports a proposed sale of 20,000 shares via stock option exercise on 07/06/2026. It also notes a prior sale of 30,000 shares on 06/01/2026.

How will the 20,000 shares be sold according to the Form 144?

The excerpt states the shares are to be sold by stock option exercise with the transaction method listed as Cash. Further execution details are not included in the excerpt.

Does the Form 144 show any recent sales by the same filer?

Yes. The filing lists a prior sale of 30,000 shares on 06/01/2026. That prior sale is shown under "Securities Sold During The Past 3 Months."

Which date is shown for the proposed transaction in the Form 144?

The proposed sale date is listed as 07/06/2026 in the filing. The method is described as a Stock Option Exercise with proceeds in cash.

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

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Accepted by SEC EDGAR 07/06/2026 - 04:10 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	0001614740
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	MIRUM PHARMACEUTICALS, INC.
SEC File Number	001-38981
Address of Issuer	989 East Hillsdale Boulevard, Suite 300 Foster City CALIFORNIA 94404
Phone	(650) 667-4085
Name of Person for Whose Account the Securities are To Be Sold	CHRISTOPHER PEETZ
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
Relationship to Issuer	Director

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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	20000	2445434.00	60981227	07/06/2026	NASDAQ

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	07/06/2026	Stock Option Exercise	ISSUER			20000	07/06/2026	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
CHRISTOPHER PEETZ 989 East Hillsdale Boulevard, Suite 300 Foster City CA 94404	Common	06/01/2026	30000	2875107.00

144: Remarks and Signature

Remarks
Date of Notice	07/06/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/02/2026
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/ Christopher James Peetz
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)