Shareholder plans $204,180 Mirum (NASDAQ: MIRM) stock sale

Rhea-AI Filing Summary

Mirum Pharmaceuticals (MIRM) shareholder Saira Ramasastry has filed a Form 144 indicating an intent to sell 2,000 shares of common stock. The planned sale is to be executed through Morgan Stanley Smith Barney LLC, with an aggregate market value of $204,180.00 and an approximate sale date of 02/13/2026 on the NASDAQ.

The 2,000 shares were acquired on 02/13/2026 via a stock option exercise from the issuer, paid in cash. The notice also lists prior sales over the past three months, including 2,000 common shares sold on 01/15/2026 for $181,980.00, 5,000 shares on 12/22/2025 for $400,000.00, and 2,000 shares on 12/18/2025 for $139,460.00. Shares of common stock outstanding were 51,393,574 as of the filing details, a baseline figure separate from the planned sale amount.

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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	2000	204180.00	51393574	02/13/2026	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	02/13/2026	Stock Option Exercise	Issuer			2000	02/13/2026	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
SAIRA RAMASASTRY 989 East Hillsdale Boulevard, Suite 300 Foster City CA 94404	Common	01/15/2026	2000	181980.00
SAIRA RAMASASTRY 989 East Hillsdale Boulevard, Suite 300 Foster City CA 94404	Common	12/22/2025	5000	400000.00
SAIRA RAMASASTRY 989 East Hillsdale Boulevard, Suite 300 Foster City CA 94404	Common	12/18/2025	2000	139460.00

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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 the Form 144 filing for MIRM by Saira Ramasastry disclose?

The filing shows a planned sale of 2,000 Mirum Pharmaceuticals common shares. The shares were acquired via stock option exercise and are expected to be sold through Morgan Stanley Smith Barney LLC on or around February 13, 2026, on the NASDAQ market.

How many MIRM shares does the Form 144 say may be sold and at what value?

The Form 144 indicates an intent to sell 2,000 Mirum Pharmaceuticals common shares. The aggregate market value tied to this planned sale is $204,180.00, based on the pricing information provided in the filing’s securities information table.

How were the 2,000 MIRM shares in the Form 144 acquired?

According to the filing, the 2,000 Mirum Pharmaceuticals common shares were acquired on February 13, 2026. They came from a stock option exercise transaction with the issuer, and the filing specifies that the exercise was paid for in cash on the same date.

What recent MIRM stock sales by Saira Ramasastry are listed in the Form 144?

The document lists three recent sales of Mirum Pharmaceuticals common stock. These include 2,000 shares on January 15, 2026 for $181,980.00, 5,000 shares on December 22, 2025 for $400,000.00, and 2,000 shares on December 18, 2025 for $139,460.00.

How many Mirum Pharmaceuticals (MIRM) shares are outstanding in the Form 144?

The Form 144 states that 51,393,574 Mirum Pharmaceuticals common shares are outstanding. This figure provides a baseline context for the company’s total share count relative to the 2,000 shares that are the subject of the planned sale.

Which broker is handling the planned MIRM share sale in the Form 144?

The filing identifies Morgan Stanley Smith Barney LLC Executive Financial Services as the broker. The address given is 1 New York Plaza, 8th Floor, New York, NY 10004, and the planned sale is to occur on the NASDAQ exchange.