TIGO ENERGY (TYGO) awards 62,700 new RSU-based shares to COO Yahui Chang

Rhea-AI Filing Summary

Chang Yahui reported acquisition or exercise transactions in this Form 4 filing.

TIGO ENERGY, INC. granted its Chief Operating Officer, Yahui Chang, 62,700 shares of Common Stock underlying restricted stock units (RSUs) on August 7, 2026 under the 2023 Incentive Plan. One-third of these RSUs will vest, and shares will be delivered, on each of the first three anniversaries of that grant date, subject to continued service. Following this grant and prior RSU awards, Chang holds a total of 262,960 shares of Common Stock, including 96,000 shares underlying RSUs granted on November 11, 2024 and 52,099 shares underlying RSUs granted on August 1, 2025, each with their own multi-year vesting schedules.

Insider Trade Summary

Net Buyer: 62,700 shares

Net Buy 1 txn

Insider Chang Yahui

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1, F2, F3	62,700	$0.00	$0.00

Holdings After Transaction: Common Stock — 262,960 shares (Direct)

Footnotes (3)

1. F1. Represents shares of common stock, par value $0.0001 per share ("Common Stock"), underlying restricted stock units ("RSUs") granted to the reporting person on August 7, 2026 (the "August 2026 Grant Date") pursuant to the Issuer's 2023 Incentive Plan. One-Third (1/3) of the RSUs 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.
2. F2. Includes 96,000 shares of Common Stock underlying RSUs granted to the reporting person on November 11, 2024 and 52,099 shares of Common Stock underlying RSU's granted to the reporting person on August 1, 2025 (the "August 2025 Grant Date"), in each case, pursuant to the Issuer's 2023 Incentive Plan. One-Third (1/3) of the RSUs initially granted to the reporting person on November 11, 2024 vested and an equal number of shares of Common Stock were delivered to the reporting person on October 8, 2025, 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 October 7, 2024, subject to continued service through each such vesting date.
3. F3. (Continuation of the Footnote (2)) One-Third (1/3) of the RSUs granted to the reporting person on August 1, 2025 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.

Key Figures

New RSU-based shares granted: 62,700 shares Total shares following transaction: 262,960 shares 2024 RSU grant size: 96,000 shares +2 more

5 metrics

New RSU-based shares granted 62,700 shares Common Stock underlying RSUs granted to COO on August 7, 2026

Total shares following transaction 262,960 shares COO’s Common Stock holdings after the August 7, 2026 grant

2024 RSU grant size 96,000 shares Common Stock underlying RSUs granted on November 11, 2024

2025 RSU grant size 52,099 shares Common Stock underlying RSUs granted on August 1, 2025

Transaction price per share $0.0000 Reported per-share value for the August 7, 2026 RSU-based grant

Key Terms

restricted stock units, 2023 Incentive Plan, vesting

3 terms

restricted stock units financial

"Represents shares of common stock ... underlying restricted stock units ("RSUs") granted to the reporting person"

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.

2023 Incentive Plan financial

"RSUs ... granted to the reporting person ... pursuant to the Issuer's 2023 Incentive Plan"

vesting financial

"One-Third (1/3) of the RSUs shall vest, and an equal number of shares ... will be deliverable"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

What did TIGO ENERGY (TYGO) disclose about COO Yahui Chang’s new equity grant?

TIGO ENERGY reported that COO Yahui Chang received 62,700 RSU-based shares of Common Stock on August 7, 2026 under the company’s 2023 Incentive Plan, vesting in three equal annual installments, subject to continued service.

How many TIGO ENERGY (TYGO) shares does COO Yahui Chang hold after this Form 4?

After the reported grant, COO Yahui Chang holds 262,960 shares of TIGO ENERGY Common Stock. This total includes shares underlying several RSU awards granted in 2024, 2025, and 2026 with staggered vesting schedules.

What are the vesting terms of the 62,700 RSUs granted to TIGO ENERGY (TYGO) COO?

The 62,700 RSUs granted on August 7, 2026 vest over three years. One-third vests on each of the first three anniversaries of the grant date, with corresponding shares delivered, if Chang remains in service through each vesting date.

What prior RSU grants to TIGO ENERGY (TYGO) COO are referenced in this Form 4?

The filing notes 96,000 shares underlying RSUs granted on November 11, 2024 and 52,099 shares underlying RSUs granted on August 1, 2025 to COO Yahui Chang, all under the 2023 Incentive Plan, each vesting in one-third annual installments over three years.

Does the new TIGO ENERGY (TYGO) RSU grant to the COO involve any purchase price?

No cash purchase price is shown for the 62,700 RSUs. The per-share transaction price is reported as $0.0000, consistent with a compensatory grant of restricted stock units rather than an open-market stock purchase.

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/11/2026 - 09:47 PM Accepted by SEC EDGAR 08/11/2026 - 09:46 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
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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)
08/07/2026

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	08/07/2026		A		62,700(1)	A	$0.00	262,960(2)(3)	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"), underlying restricted stock units ("RSUs") granted to the reporting person on August 7, 2026 (the "August 2026 Grant Date") pursuant to the Issuer's 2023 Incentive Plan. One-Third (1/3) of the RSUs 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.

2. Includes 96,000 shares of Common Stock underlying RSUs granted to the reporting person on November 11, 2024 and 52,099 shares of Common Stock underlying RSU's granted to the reporting person on August 1, 2025 (the "August 2025 Grant Date"), in each case, pursuant to the Issuer's 2023 Incentive Plan. One-Third (1/3) of the RSUs initially granted to the reporting person on November 11, 2024 vested and an equal number of shares of Common Stock were delivered to the reporting person on October 8, 2025, 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 October 7, 2024, subject to continued service through each such vesting date.

3. (Continuation of the Footnote (2)) One-Third (1/3) of the RSUs granted to the reporting person on August 1, 2025 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.

	/s/ Bill Roeschlein, as attorney-in-fact	08/11/2026
	** 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.
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* Form 4: SEC 1474 (03-26)