Trust of Power Integrations (POWI) director sells 118,573 shares

Rhea-AI Filing Summary

POWER INTEGRATIONS INC director Balu Balakrishnan reported indirect open-market sales of 118,573 shares of Common Stock held by a trust. On May 26, 2026, the trust sold 70,710 shares at an average of $82.2629 per share and 47,863 shares at $80.9264 per share.

Both prices are reported as weighted averages for multiple trades within narrow intraday ranges. After these transactions, the filing shows 474,513 shares of Common Stock held indirectly by the reporting person through the trust.

Insights

Equity compensation and insider-trading analyst

Director’s trust sold 118,573 Power Integrations shares in routine open-market trades.

The filing shows a trust associated with director Balu Balakrishnan executed two open-market sales of POWER INTEGRATIONS INC Common Stock on May 26, 2026. The trust sold 70,710 shares at a weighted average of $82.2629 and 47,863 shares at $80.9264.

These are straightforward open-market sales, not option exercises or tax withholdings, and the filing lists no remaining derivative positions. Following the transactions, the reported indirect holding is 474,513 shares, indicating the director retains a substantial position even after the net selling.

Insider Trade Summary

Net Seller: 118,573 shares ($9,690,190)

Net Sell 2 txns

Insider BALAKRISHNAN BALU

Role null

Sold 118,573 shs ($9.69M)

Type	Security	Shares	Price	Value
Sale	Common Stock	47,863	$80.9264	$3.87M
Sale	Common Stock	70,710	$82.2629	$5.82M

Holdings After Transaction: Common Stock — 474,513 shares (Indirect, by Trust)

Footnotes (1)

1. The price reported is a weighted average price. These shares were sold in multiple transactions at sale prices ranging from $80.52 to $81.25.The Reporting Person undertakes to provide the full information regarding the number of shares sold at each separate price upon further request. The price reported is a weighted average price. These shares were sold in multiple transactions at sale prices ranging from $82.08 to $82.44.The Reporting Person undertakes to provide the full information regarding the number of shares sold at each separate price upon further request.

Key Figures

Shares sold, first transaction: 70,710 shares Shares sold, second transaction: 47,863 shares Total shares sold: 118,573 shares +3 more

6 metrics

Shares sold, first transaction 70,710 shares Common Stock sold on May 26, 2026 at $82.2629 weighted-average

Shares sold, second transaction 47,863 shares Common Stock sold on May 26, 2026 at $80.9264 weighted-average

Total shares sold 118,573 shares Sum of open-market sales reported for May 26, 2026

Sale price, first block $82.2629 per share Weighted-average price for 70,710-share sale on May 26, 2026

Sale price, second block $80.9264 per share Weighted-average price for 47,863-share sale on May 26, 2026

Shares held after transactions 474,513 shares Indirect Common Stock holding by trust after reported sales

Key Terms

open-market sale, weighted average price, indirect ownership, by Trust

4 terms

open-market sale financial

"transaction_action is "open-market sale" for both Common Stock transactions"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average price financial

""The price reported is a weighted average price. These shares were sold""

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

indirect ownership financial

"ownership_type is "indirect" with direct_or_indirect code "I""

by Trust financial

"nature_of_ownership is reported as "by Trust" for the sold shares"

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

BALAKRISHNAN BALU

(Last) (First) (Middle)

5245 HELLYER AVE

(Street)

SAN JOSE CALIFORNIA 95138

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
POWER INTEGRATIONS INC [ POWI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/26/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/26/2026		S		47,863	D	$80.9264(1)	474,513	I	by Trust
Common Stock	05/26/2026		S		70,710	D	$82.2629(2)	403,803	I	by Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported is a weighted average price. These shares were sold in multiple transactions at sale prices ranging from $80.52 to $81.25.The Reporting Person undertakes to provide the full information regarding the number of shares sold at each separate price upon further request.

2. The price reported is a weighted average price. These shares were sold in multiple transactions at sale prices ranging from $82.08 to $82.44.The Reporting Person undertakes to provide the full information regarding the number of shares sold at each separate price upon further request.

	By: /s/ Eric Verity Attorney In Fact For: Balu Balakrishnan	05/28/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider sales did POWER INTEGRATIONS INC (POWI) report for May 26, 2026?

POWER INTEGRATIONS INC reported that a trust associated with director Balu Balakrishnan sold 118,573 Common Stock shares on May 26, 2026. The sales were split into two open-market transactions at different weighted-average prices but on the same date.

How many POWER INTEGRATIONS INC shares did the director’s trust sell in each Form 4 transaction?

The trust sold 70,710 POWER INTEGRATIONS INC Common Stock shares in one transaction and 47,863 shares in another. Both were reported as open-market sales executed on May 26, 2026, using transaction code "S" for sale.

What prices did the POWI insider receive for the shares sold on May 26, 2026?

The filing reports weighted-average sale prices of $82.2629 and $80.9264 per share for the two POWI transactions. Footnotes explain that each price reflects multiple trades within narrower ranges around those averages on the transaction date.

How many POWER INTEGRATIONS INC shares does the reporting person hold after these sales?

After the reported sales, the filing shows 474,513 POWI Common Stock shares held indirectly through a trust. This figure represents the remaining position attributed to the reporting person following the combined 118,573-share net disposition.

Were the May 26, 2026 POWI insider trades option exercises or simple stock sales?

The May 26, 2026 transactions were simple stock sales of Common Stock, coded "S" as open-market sales. The Form 4 shows no derivative exercises, tax-withholding events, or remaining option positions associated with these specific trades.

What type of ownership did the POWI director report for the sold shares?

The director reported the sold POWER INTEGRATIONS INC shares as "indirect" ownership, with the nature of ownership listed as "by Trust." This means the transactions were executed from shares held in a trust rather than directly in the individual’s name.