Power Integrations Form 144: Proposed Insider Sale of 16,989 Shares

Rhea-AI Filing Summary

Power Integrations, Inc. (POWI) Form 144 notice shows a proposed sale of 16,989 common shares through Morgan Stanley Smith Barney on NASDAQ with an aggregate market value of $796,084.15. The filing lists the shares' acquisition history: multiple restricted stock vestings and employee purchases between 2018 and 2019, totaling the disclosed lots. The filer represents they are not aware of any undisclosed material adverse information. No securities were reported sold in the past three months.

Positive

• Compliance: The filer submitted a Form 144 with broker, share count, and acquisition history, meeting disclosure requirements
• Seller attestation: The filer represents no undisclosed material adverse information about the issuer

Negative

• Proposed insider sale: 16,989 shares (~$796,084) scheduled to be sold, which could be viewed negatively by some investors despite small size relative to outstanding shares

Insights

Securities Analyst

TL;DR Insider intends to sell a modest block of POWI shares acquired via employee programs, not a company-level disclosure of material change.

The Form 144 notifies the market of a proposed brokered sale of 16,989 common shares valued at about $796k, originating from restricted stock vestings and employee purchases in 2018–2019. This is a routine disclosure required for certain officer/director/large-holder sales; it does not itself provide operational or financial performance information about the company. Given the company's outstanding share count of 56,095,582, the proposed sale represents a small fraction of equity and is unlikely to be material to valuation by itself.

Corporate Governance Expert

TL;DR The filing documents compliant insider-sale reporting; it signals an individual sale rather than governance or control changes.

Form 144 confirms the seller relied on prior compensation-related awards and employee-plan purchases as the source of the shares. The issuer relationship is disclosed, the broker and approximate sale date are provided, and the filer attests to no undisclosed material information. There is no indication of leadership change, related-party transactions beyond routine compensation, or other governance events in this filing.

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	16989	796084.15	56095582	08/14/2025	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	02/02/2018	Restricted stock vesting under a registered plan	Issuer			2436	02/02/2018	Compensation
Common	11/03/2018	Restricted stock vesting under a registered plan	Issuer			298	11/03/2018	Compensation
Common	04/01/2018	Restricted stock vesting under a registered plan	Issuer			1484	04/01/2018	Compensation
Common	02/02/2019	Shares Purchased through Employee Stock Purchase Plan	Issuer			2438	02/02/2019	Cash
Common	01/26/2019	Restricted stock vesting under a registered plan	Issuer			2550	01/26/2019	Compensation
Common	02/13/2019	Restricted stock vesting under a registered plan	Issuer			5345	02/13/2019	Compensation
Common	01/27/2019	Restricted stock vesting under a registered plan	Issuer			2438	01/27/2019	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

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 POWI Form 144 announce?

It announces a proposed sale of 16,989 common shares of Power Integrations (POWI) via Morgan Stanley Smith Barney with aggregate market value $796,084.15.

When is the approximate sale date listed on the Form 144?

The approximate date of sale is listed as 08/14/2025.

How were the shares being sold originally acquired?

The shares were acquired through restricted stock vesting under a registered plan and purchases through the employee stock purchase plan between 2018 and 2019.

Does the Form 144 report any securities sold by the filer in the past three months?

No. The filing states Nothing to Report for securities sold during the past three months.

Which broker is handling the proposed sale?

The broker listed is Morgan Stanley Smith Barney LLC (Executive Financial Services).