[8-K] Monolithic Power Systems, Inc. Reports Material Event

Rhea-AI Filing Summary

DT Cloud Star Acquisition Corp. (Nasdaq: DTSQU) filed an 8-K reporting the termination of a previously issued unsecured working-capital promissory note. The note, dated 28 Oct 2024, allowed borrowings up to $300,000 from its sponsor, DT Cloud Star Management Ltd., carried no interest, and was payable at the close of an initial business combination. On 29 Jul 2025 the company and sponsor executed a Letter Agreement that cancels the note; management confirms the outstanding balance was nil.

No other material agreements, financial statements, or quantitative updates were disclosed. Exhibit 10.1 contains the Letter Agreement; Exhibit 104 provides the Inline XBRL cover data.

Insights

SPAC Financial Analyst

TL;DR: Neutral; note termination removes an unused $300k credit line, leaving leverage unchanged.

The 8-K simply cancels a sponsor-backed working-capital note that was never drawn. Because the balance was zero, cash, trust proceeds, and diluted share count are unaffected. The filing does not alter the SPAC’s timeline, trust redemption value, or merger prospects, so investor economics remain intact. I view the disclosure as routine housekeeping.
Impact rating: 0 (neutral)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of Report (date of earliest event reported):

July 31, 2025

MONOLITHIC POWER SYSTEMS, INC.

(Exact name of registrant as specified in its charter)

Delaware		000-51026		77-0466789
(State or other jurisdiction of		(Commission		(I.R.S. Employer
incorporation or organization)		File Number)		Identification Number)

5808 Lake Washington Blvd. NE, Kirkland, Washington (Address of principal executive offices) 98033 (Zip Code)

(425) 296-9956

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.001 per share	MPWR	The NASDAQ Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐ 

Item 2.02 Results of Operations and Financial Condition.

On July 31, 2025, Monolithic Power Systems, Inc. issued a press release regarding its financial results for the quarter ended June 30, 2025. The press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein.

Attached hereto as Exhibit 99.2 and incorporated by reference herein is financial information and commentary regarding results of the quarter ended June 30, 2025. 

The information under Item 2.02 of this Current Report on Form 8-K and Exhibits 99.1 and 99.2 attached hereto are being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “1934 Act”), nor shall they be deemed incorporated by reference in any filing with the Securities and Exchange Commission under the 1934 Act or the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit		Description
99.1		Press release issued on July 31, 2025, announcing the financial results for the quarter ended June 30, 2025.
99.2		Earnings commentary for the quarter ended June 30, 2025.
104		Cover Page Interactive Data File (embedded within the Inline XBRL Document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: July 31, 2025	By:	/s/ T. Bernie Blegen
		T. Bernie Blegen
		Executive Vice President and Chief Financial Officer

FAQ

Why did DTSQU file this Form 8-K on 29 July 2025?

To disclose termination of a $300,000 sponsor promissory note that had a zero balance.

Does DT Cloud Star Acquisition Corp. owe any amount under the cancelled note?

No. The company confirmed the outstanding principal was nil when the note was terminated.

Will the note cancellation affect DTSQU shareholders’ trust value or redemption rights?

The filing states no financial impact; trust funds and shareholder rights remain unchanged.

Where can investors find the Letter Agreement?

It is filed as Exhibit 10.1 to the 8-K and incorporated by reference.

Does the 8-K provide any new information on the SPAC’s potential business combination?

No. The document is limited to the note termination and includes no merger updates.