Tigo Energy COO has 23,463 shares withheld for taxes

The unvested RSUs described in the ownership footnotes vest in installments, subject to continued service through each applicable vesting date.

Rhea-AI Filing Summary

Tigo Energy, Inc. Chief Operating Officer Yahui Chang had 23,463 shares withheld on October 7, 2026, in an exempt disposition to the issuer to satisfy tax-withholding obligations arising from vesting previously reported restricted stock units. The reported price was $0.9100 per share. Chang reported 239,497 shares after the transaction, including 48,000 shares underlying unvested RSUs granted November 11, 2024, 52,099 granted August 1, 2025, and 62,700 granted August 7, 2026.

Insider Trade Summary

Tax Withholding: 23,463 shares

Tax Withholding 1 txn

Insider Chang Yahui

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1, F2, F3, F4	23,463	$0.91	$21K

Holdings After Transaction: Common Stock — 239,497 shares (Direct)

Footnotes (4)

1. F1. Represents shares of common stock, par value $0.0001 per share ("Common Stock") withheld in an exempt disposition to the Issuer under Rule 16b-3(e) to satisfy tax withholding obligations of the reporting person arising out of the vesting of previously reported restricted stock units ("RSUs").
2. F2. Includes 48,000 shares of Common Stock underlying unvested RSUs granted to the reporting person on November 11, 2024 (the "November 2024 Grant Date"), 52,099 shares of Common Stock underlying RSUs granted to the reporting person on August 1, 2025 (the "August 2025 Grant Date"), and 62,700 shares of Common Stock underlying RSUs granted to the reporting person on August 7, 2026 (the "August 2026 Grant Date"), in each case, pursuant to the Issuer's 2023 Incentive Plan.
3. F3. (Continuation of the Footnote (2)) One-Third (1/3) of the RSUs granted to the reporting person on the November 2024 Grant Date vested and an equal number of shares of Common Stock were delivered to the reporting person on each of October 8, 2025, and October 7, 2026. One-third (1/3) of the RSUs subject to the grant shall vest, and an equal number of shares of Common Stock will be deliverable to the reporting person, on the third anniversary of October 7, 2024, subject to continued service through each such vesting date.
4. F4. (Continuation of the Footnote (2)) One-Third (1/3) of the RSUs granted to the reporting person on the August 2025 Grant Date vested and an equal number of shares of Common Stock were delivered to the reporting person on August 1, 2026, and one-third of the RSUs subject to the grant shall vest, and an equal number of shares of Common Stock will be deliverable to the reporting person, on each of the second and third anniversaries of the August 2025 Grant Date, subject to continued service through each such vesting date. One-Third (1/3) of the RSUs granted to the reporting person on the August 2026 Grant Date shall vest, and an equal number of shares of Common Stock will be deliverable to the reporting person, on each of the first three anniversaries of the August 2026 Grant Date, subject to continued service through each such vesting date.

Key Figures

Shares withheld: 23,463 shares Reported price per share: $0.9100 per share Post-transaction holdings: 239,497 shares

3 metrics

Shares withheld 23,463 shares Tax withholding on October 7, 2026

Reported price per share $0.9100 per share Tax-withholding disposition on October 7, 2026

Post-transaction holdings 239,497 shares Includes shares underlying unvested RSUs

Key Terms

restricted stock units, Rule 16b-3(e), exempt disposition

3 terms

restricted stock units technical

"vesting of previously reported restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Rule 16b-3(e) regulatory

"exempt disposition to the Issuer under Rule 16b-3(e)"

exempt disposition regulatory

"withheld in an exempt disposition to the Issuer"

FAQ

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

How many TYGO shares did Chief Operating Officer Yahui Chang have withheld?

Yahui Chang had 23,463 shares withheld on October 7, 2026, to satisfy tax-withholding obligations arising from vesting previously reported RSUs. The reported price was $0.9100 per share, and Chang reported 239,497 shares after the transaction.

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

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Available on EDGAR 10/09/2026 - 04:33 PM Accepted by SEC EDGAR 10/09/2026 - 04:32 PM Learn about SEC filing dates

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^*

Chang Yahui

(Last) (First) (Middle)

983 UNIVERSITY AVENUE, SUITE B

(Street)

LOS GATOS CALIFORNIA 95032

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/07/2026

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	10/07/2026		F		23,463(1)	D	$0.91	239,497(2)(3)(4)	D

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. Represents shares of common stock, par value $0.0001 per share ("Common Stock") withheld in an exempt disposition to the Issuer under Rule 16b-3(e) to satisfy tax withholding obligations of the reporting person arising out of the vesting of previously reported restricted stock units ("RSUs").

2. Includes 48,000 shares of Common Stock underlying unvested RSUs granted to the reporting person on November 11, 2024 (the "November 2024 Grant Date"), 52,099 shares of Common Stock underlying RSUs granted to the reporting person on August 1, 2025 (the "August 2025 Grant Date"), and 62,700 shares of Common Stock underlying RSUs granted to the reporting person on August 7, 2026 (the "August 2026 Grant Date"), in each case, pursuant to the Issuer's 2023 Incentive Plan.

3. (Continuation of the Footnote (2)) One-Third (1/3) of the RSUs granted to the reporting person on the November 2024 Grant Date vested and an equal number of shares of Common Stock were delivered to the reporting person on each of October 8, 2025, and October 7, 2026. One-third (1/3) of the RSUs subject to the grant shall vest, and an equal number of shares of Common Stock will be deliverable to the reporting person, on the third anniversary of October 7, 2024, subject to continued service through each such vesting date.

4. (Continuation of the Footnote (2)) One-Third (1/3) of the RSUs granted to the reporting person on the August 2025 Grant Date vested and an equal number of shares of Common Stock were delivered to the reporting person on August 1, 2026, and one-third of the RSUs subject to the grant shall vest, and an equal number of shares of Common Stock will be deliverable to the reporting person, on each of the second and third anniversaries of the August 2025 Grant Date, subject to continued service through each such vesting date. One-Third (1/3) of the RSUs granted to the reporting person on the August 2026 Grant Date shall vest, and an equal number of shares of Common Stock will be deliverable to the reporting person, on each of the first three anniversaries of the August 2026 Grant Date, subject to continued service through each such vesting date.

	/s/ Bill Roeschlein, as attorney-in-fact	10/09/2026
	** 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)