ESPR insider sale notice: 53,588 shares tied to vesting (ESPR)

Rhea-AI Filing Summary

ESPR reported a Form 144 notice indicating 53,588 shares of Common Stock were listed for sale tied to restricted stock vesting on 06/16/2026 and designated as compensation. The filing also discloses a prior sale of 25,578 shares on 03/17/2026 for $69,551.70.

Insights

Securities Compliance Analyst

Form 144 lists an issuer-related sale following restricted stock vesting.

The filing shows 53,588 shares tied to a Restricted Stock Vesting event dated 06/16/2026, with the transaction source labeled Issuer and purpose labeled Compensation. This indicates shares eligible for resale under Section 144 procedures.

Prior activity includes a reported sale of 25,578 shares on 03/17/2026 for $69,551.70. Cash‑flow treatment and buyer details are not disclosed in the excerpt; subsequent filings may provide settlement details.

Corporate Governance Specialist

Notice is procedural rather than an explicit discretionary open‑market sale.

The transaction is described as resulting from restricted stock vesting and labeled compensation, which often reflects issuance to a service provider or insider rather than a market-initiated sale. The Form 144 registration enables resale under safe-harbor conditions.

Examples of prior sales are provided in the excerpt; the excerpt does not state whether a sale is planned immediately or will occur under an arrangement.

Key Figures

Shares listed for resale: 53,588 shares Prior sale value: $69,551.70

2 metrics

Shares listed for resale 53,588 shares Restricted stock vesting on <date>06/16/2026

Prior sale value $69,551.70 Sale of 25,578 shares on <date>03/17/2026

Key Terms

Form 144, Restricted Stock Vesting, Securities Sold During The Past 3 Months

3 terms

Form 144 regulatory

"Filer Information | | | 144: Filer Information"

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.

Restricted Stock Vesting financial

"Common | 06/16/2026 | 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.

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months"

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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

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	53588	169059.42	257431942	06/17/2026	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	06/16/2026	Restricted Stock Vesting	Issuer			53588	06/16/2026	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Sheldon Koenig 3891 Ranchero Drive Suite 150 Ann Arbor MI 48108	Common	03/17/2026	25578	69551.70

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 the Form 144 filed for ESPR mean?

It notifies regulators that 53,588 shares became eligible for resale after restricted stock vested on 06/16/2026. The form allows resale under Section 144 procedures; the filing does not itself report an executed open‑market sale or proceeds recipients.

Who is the reported filer on the ESPR Form 144?

The excerpt lists a brokerage contact for the filer as Fidelity Brokerage Services LLC at the provided address. The filing also names an individual, Sheldon Koenig, in the prior‑sales section with a recorded sale on 03/17/2026.

How many shares were sold previously according to the ESPR excerpt?

The filing shows a prior reported sale of 25,578 shares on 03/17/2026 with a reported value of $69,551.70. That prior sale is listed in the "Securities Sold During The Past 3 Months" section of the excerpt.

Does the Form 144 excerpt state the sale proceeds or buyers for ESPR shares?

No. The excerpt records a prior sale value but does not identify buyers or net proceeds for the newly eligible 53,588 shares. Details on purchasers, execution method, or cash flows are not provided in the provided excerpt.