Michael Splinter increases TYGO stake by 11,668 shares via option exercise

Rhea-AI Filing Summary

Michael R. Splinter, a director of Tigo Energy (TYGO), executed a buy-and-hold exercise of stock options on 08/06/2025 to acquire 11,668 shares at an exercise price of $0.599 per share. Following this transaction the reporting person directly beneficially owned 483,664 shares, a total that includes 126,904 shares underlying restricted stock units granted May 20, 2025 that will vest and be deliverable immediately prior to the 2026 annual meeting, subject to continued service.

The filing also discloses material indirect holdings for which the reporting person serves as trustee and exercises investing authority: 1,123,656 shares held by the SPLINTER ROBOOSTOFF REV TRUST UAD 1/23/97 and several irrevocable trusts holding 35,000 shares each. Footnotes state the option exercised was set to expire on 09/29/2025 and had been exercisable as of July 31, 2019.

Positive

• Insider acquisition: Director exercised options and acquired 11,668 shares, demonstrating continued insider ownership.
• Alignment via RSUs: Direct holdings include 126,904 RSU-linked shares scheduled to vest prior to the 2026 annual meeting, aligning management and shareholder interests upon vesting.

Negative

• None.

Insights

Securities Analyst

TL;DR: Director exercised options to acquire 11,668 TYGO shares, modestly increasing direct ownership to 483,664 shares; transaction appears routine.

The exercise of 11,668 shares at $0.599 is a straightforward option exercise reported as a buy-and-hold action. The resulting direct position of 483,664 shares is significant in absolute terms but should be evaluated relative to total outstanding shares (not provided in this filing). The filing also documents 126,904 RSU-based shares included in the direct count that are scheduled to vest prior to the 2026 annual meeting, which will convert to delivered shares subject to service conditions. Overall, this filing is a routine insider holdings update rather than a material corporate event.

Corporate Governance Expert

TL;DR: Insider exercise and extensive trustee-controlled holdings underline the reporting person’s ongoing ownership and governance involvement.

The report highlights the reporting person’s dual role as a director and trustee over multiple trusts holding sizeable TYGO positions (notably 1,123,656 shares in one revocable trust and several 35,000-share irrevocable trusts). That concentration of control via trustee roles is governance-relevant because it indicates where voting and investing authority resides. The inclusion of near-term RSU vesting schedules is also governance-relevant for share count and potential dilution tracking. The disclosure is thorough and consistent with routine Section 16 reporting obligations.

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

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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^*

SPLINTER MICHAEL R

(Last) (First) (Middle)

983 UNIVERSITY AVENUE, SUITE B

(Street)

LOS GATOS CA 95032

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
TIGO ENERGY, INC. [ TYGO ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
08/06/2025

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

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

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

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	08/06/2025		M		11,668(1)	A	$0.599	483,664(2)	D
Common Stock								1,123,656	I	See footnote(3)
Common Stock								35,000	I	See footnote(4)
Common Stock								35,000	I	See footnote(5)
Common Stock								35,000	I	See footnote(6)
Common Stock								35,000	I	See footnote(7)

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
Stock Option (right to buy)	$0.599	08/06/2025		M(1)			11,668	(8)	09/29/2025	Common Stock	11,668	$0.00	0.00	D

Explanation of Responses:

1. Represents a buy and hold exercise by the reporting person of a stock option that was set to expire on September 29, 2025.

2. Includes 126,904 shares of common stock, par value $0.0001 per share ("Common Stock"), underlying restricted stock units ("RSUs") granted to the reporting person on May 20, 2025 pursuant to the Issuer's 2023 Incentive Plan. Such RSUs will vest in full, and an equal number of shares of Common Stock will be deliverable to the reporting person, immediately prior to the Issuer's 2026 Annual Meeting of Stockholders, subject to continued service through such vesting date.

3. The shares reported are owned by the SPLINTER ROBOOSTOFF REV TRUST UAD 1/23/97, for which the reporting person serves as Trustee and exercises investing authority over such shares.

4. The shares reported are owned by the AMANDA CHRISTINE SPLINTER 2012 IRREVOCABLE TRUST DTD 08/10/2012, for which the reporting person serves as Trustee and exercises investing authority over such shares.

5. The shares reported are owned by the ARCHIE DAVID ROBOOSTOFF 2012 IRREVOCABLE TRUST DTD 08/10/2012, for which the reporting person serves as Trustee and exercises investing authority over such shares.

6. The shares reported are owned by the JOSHUA MICHAEL SPLINTER 2012 IRREVOCABLE TRUST DTD 08/10/2012, for which the reporting person serves as Trustee and exercises investing authority over such shares.

7. The shares reported are owned by the KRISTA DIANE FENSKE 2012 IRREVOCABLE TRUST DTD 08/10/2012, for which the reporting person serves as Trustee and exercises investing authority over such shares.

8. The stock option was exercisable on July 31, 2019.

	/s/ Bill Roeschlein, as attorney-in-fact	08/11/2025
	** 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.
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FAQ

What transaction did Michael Splinter report on the TYGO Form 4?

The report discloses a buy-and-hold exercise of stock options on 08/06/2025 that resulted in the acquisition of 11,668 shares at an exercise price of $0.599 per share.

How many TYGO shares does the reporting person directly own after the transaction?

The reporting person directly beneficially owned 483,664 shares following the reported transaction.

Are there restricted stock units (RSUs) involved in this filing for TYGO?

Yes. The direct ownership figure includes 126,904 shares underlying RSUs granted on May 20, 2025 that will vest and be deliverable immediately prior to the 2026 annual meeting, subject to continued service.

Does the Form 4 report any indirect holdings for Michael Splinter in TYGO?

Yes. The filing reports 1,123,656 shares owned by the SPLINTER ROBOOSTOFF REV TRUST UAD 1/23/97 and several irrevocable trusts of 35,000 shares each, for which the reporting person serves as trustee and exercises investing authority.

What was the exercise price and expiration context for the option exercised?

The option exercised had an exercise price of $0.599. Footnotes state the option was set to expire on 09/29/2025 and had been exercisable as of July 31, 2019.