POWI 144/A: Two sales by Clifford Walker, multiple vesting lots

POWI filing: A 144/A amendment lists multiple small issuances from restricted stock vesting and Employee Stock Purchase Plan purchases and reports recent open-market sales by Clifford J. Walker.

Rhea-AI Filing Summary

POWI filing: A 144/A amendment lists multiple small issuances from restricted stock vesting and Employee Stock Purchase Plan purchases and reports recent open-market sales by Clifford J. Walker. The amendment itemizes vesting/purchase dates and share counts and records two sales: 20,339 shares on 05/13/2026 and 9,361 shares on 05/12/2026.

The schedule shows numerous issuer-originated entries (vests/purchases) dated between 01/29/2025 and 02/09/2026, with individual lots ranging from 10 to 1,951 shares. Cash was the consideration for the listed issuer transactions.

Insights

Securities Compliance Analyst

Routine resale amendment showing issuer vesting items and two recent sales by a reporting holder.

The amendment catalogs multiple issuer-originated share issuances from restricted stock vesting and Employee Stock Purchase Plan purchases, each with a date and share count. The filing separately lists two resale transactions by Clifford J Walker on 05/12/2026 and 05/13/2026.

These entries are administrative: the vesting/purchase rows document issuance events, while the two sales are reported dispositions with aggregate amounts. Subsequent filings would show any further resale activity.

Key Figures

Sale on 05/13/2026: 20,339 shares Sale on 05/12/2026: 9,361 shares Largest issuer vesting lot: 1,951 shares +2 more

5 metrics

Sale on 05/13/2026 20,339 shares Resale reported by Clifford J. Walker

Sale on 05/12/2026 9,361 shares Resale reported by Clifford J. Walker

Largest issuer vesting lot 1,951 shares Restricted stock vesting on 02/06/2026

Common lot examples 1,912; 1,485; 1,390 shares Issuer vesting/purchases dated 04/01/2025, 01/30/2025, 01/31/2026

Smallest issuer lot shown 10 shares Restricted stock vesting on 02/09/2026

Key Terms

restricted stock vesting under a registered plan, Employee Stock Purchase Plan, 144/A

3 terms

restricted stock vesting under a registered plan financial

"Entries labeled "Restricted stock vesting under a registered plan" with dates and share counts"

Employee Stock Purchase Plan financial

"Lines stating "Shares Purchased through Employee Stock Purchase Plan" dated 01/31/2025, 07/31/2025, 01/31/2026"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

144/A regulatory

"Form header shows this document is an amendment "144/A: Filer Information""

FAQ

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

What does the POWI 144/A amendment show about recent insider sales?

The amendment reports two sales by Clifford J. Walker: 9,361 shares on 05/12/2026 and 20,339 shares on 05/13/2026, with aggregate proceeds listed beside each trade.

Which types of issuer-originated share events are listed in the POWI 144/A?

The amendment lists issuer-originated events including restricted stock vesting under a registered plan and Employee Stock Purchase Plan purchases, with dated lots and specific share counts.

Over what date range do the listed vesting and ESPP purchases occur in this filing?

The listed issuer-originated share events span from 01/29/2025 through 02/09/2026, with multiple dated entries and per‑lot share counts shown.

Are the issuer-originated entries in the 144/A cash‑settled?

Yes; each issuer-originated line in the excerpt is labeled with Cash as the consideration for the restricted stock vesting or ESPP purchase.

Does the 144/A amendment provide total outstanding shares or aggregate registered amount?

The excerpt lists individual lot counts and two resale trades but does not present a single aggregate registered amount or a shares‑outstanding total in the provided text.

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

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Accepted by SEC EDGAR 05/28/2026 - 04:07 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/A

144/A: Filer Information

Filer CIK	0001182413
Filer CCC	XXXXXXXX
Previous Accession Number Of The Filing	0001950047-26-005058
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144/A: Issuer Information

Name of Issuer	POWER INTEGRATIONS, INC.
SEC File Number	000-23441
Address of Issuer	5245 Hellyer Avenue San Jose CALIFORNIA 95138-1002
Phone	(408) 414-9200
Name of Person for Whose Account the Securities are To Be Sold	CLIFFORD J WALKER
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

144/A: 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	15000	1234216.50	55719984	05/26/2026	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/A: 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	01/29/2025	Restricted stock vesting under a registered plan	Issuer			914	01/29/2025	Cash
Common	01/30/2025	Restricted stock vesting under a registered plan	Issuer			1485	01/30/2025	Cash
Common	01/31/2025	Shares Purchased through Employee Stock Purchase Plan	Issuer			225	01/31/2025	Cash
Common	02/05/2025	Restricted stock vesting under a registered plan	Issuer			640	02/05/2025	Cash
Common	02/07/2025	Restricted stock vesting under a registered plan	Issuer			933	02/07/2025	Cash
Common	02/09/2025	Restricted stock vesting under a registered plan	Issuer			1460	02/09/2025	Cash
Common	04/01/2025	Restricted stock vesting under a registered plan	Issuer			1912	04/01/2025	Cash
Common	07/31/2025	Shares Purchased through Employee Stock Purchase Plan	Issuer			207	07/31/2025	Cash
Common	01/25/2026	Restricted stock vesting under a registered plan	Issuer			276	01/25/2026	Cash
Common	01/26/2026	Restricted stock vesting under a registered plan	Issuer			1058	01/26/2026	Cash
Common	01/27/2026	Restricted stock vesting under a registered plan	Issuer			651	01/27/2026	Cash
Common	01/29/2026	Restricted stock vesting under a registered plan	Issuer			477	01/29/2026	Cash
Common	01/30/2026	Restricted stock vesting under a registered plan	Issuer			630	01/31/2026	Cash
Common	01/31/2026	Shares Purchased through Employee Stock Purchase Plan	Issuer			1390	01/31/2026	Cash
Common	02/02/2026	Restricted stock vesting under a registered plan	Issuer			781	02/02/2026	Cash
Common	02/06/2026	Restricted stock vesting under a registered plan	Issuer			1951	02/06/2026	Cash
Common	02/09/2026	Restricted stock vesting under a registered plan	Issuer			10	02/09/2026	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/A: 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
CLIFFORD J WALKER 5245 Hellyer Avenue San Jose CA 95138-1002	Common	05/13/2026	20339	1467053.11
CLIFFORD J WALKER 5245 Hellyer Avenue San Jose CA 95138-1002	Common	05/12/2026	9361	667036.78

144/A: Remarks and Signature

Remarks	Amendment to Form 144 filed on 05/26/2026, to update the number of shares sold and number of shares acquired.
Date of Notice	05/28/2026
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/ Clifford Walker
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)