Tigo Energy (NASDAQ: TYGO) COO has 12,734 shares withheld for taxes

Rhea-AI Filing Summary

Tigo Energy, Inc. Chief Operating Officer Yahui Chang reported a Form 4 transaction involving 12,734 shares of common stock on August 3, 2026. These shares were withheld by the issuer at $1.91 per share to satisfy tax withholding obligations arising from vesting restricted stock units, rather than an open-market sale. Following this tax-withholding disposition, Chang beneficially owns 200,260 shares of common stock, including shares underlying RSU grants made in November 2024 and August 2025 under the company’s 2023 Incentive Plan, which continue to vest over future anniversaries.

Insider Trade Summary

Net Seller: 12,734 shares

Net Sell 1 txn

Insider Chang Yahui

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1, F2, F3	12,734	$1.91	$24K

Holdings After Transaction: Common Stock — 200,260 shares (Direct)

Footnotes (3)

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 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, 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 the August 2025 Grant Date, subject to continued service through each such vesting date.

Key Figures

Shares withheld for taxes: 12,734 shares Withholding price: $1.91 per share Shares beneficially owned after transaction: 200,260 shares +3 more

6 metrics

Shares withheld for taxes 12,734 shares Common stock withheld in code F transaction on August 3, 2026

Withholding price $1.91 per share Value used to satisfy tax withholding obligations on vested RSUs

Shares beneficially owned after transaction 200,260 shares Common stock beneficially owned by COO Yahui Chang following withholding

November 2024 RSU grant 96,000 shares Shares of common stock underlying RSUs granted November 11, 2024

August 2025 RSU grant 52,099 shares Shares of common stock underlying RSUs granted August 1, 2025

RSU vesting pattern 1/3 per installment RSUs vest in three equal annual tranches tied to 2024 and 2025 dates

Key Terms

restricted stock units, Rule 16b-3(e), exempt disposition, beneficially owns, +1 more

5 terms

restricted stock units financial

"arising out of the vesting of previously reported restricted stock units ("RSUs")"

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

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

exempt disposition financial

"shares of Common Stock withheld in an exempt disposition to the Issuer"

beneficially owns financial

"Amount of securities beneficially owned following reported transaction(s)"

Beneficially owns means a person or entity enjoys the economic benefits and control of a security even if the legal title or registration is held in another name. Think of it like having the keys and profits from a car that is registered to a friend: you use it, benefit from it, and make decisions about it even though the official paperwork lists someone else. For investors, this matters because it reveals who truly controls shares, affects voting power, potential conflicts of interest, and regulatory disclosure obligations.

2023 Incentive Plan financial

"in each case, pursuant to the Issuer's 2023 Incentive Plan"

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 08/05/2026 - 05:11 PM Accepted by SEC EDGAR 08/05/2026 - 05:10 PM Learn about SEC filing dates

FAQ

What insider transaction did Tigo Energy (TYGO) COO Yahui Chang report?

Yahui Chang reported a tax-withholding disposition of 12,734 shares of Tigo Energy common stock on August 3, 2026. The shares were withheld by the company at $1.91 per share to cover taxes from the vesting of previously granted restricted stock units.

Was the Tigo Energy (TYGO) Form 4 for an open-market sale of shares?

No. The Form 4 shows a code F transaction, meaning shares were withheld by Tigo Energy to pay tax liabilities from RSU vesting. It does not reflect a discretionary open-market purchase or sale by COO Yahui Chang.

How many Tigo Energy (TYGO) shares does COO Yahui Chang hold after this transaction?

After the reported tax-withholding event, Yahui Chang beneficially owns 200,260 shares of Tigo Energy common stock. This figure includes shares underlying outstanding restricted stock units granted in November 2024 and August 2025 that continue to vest over time.

What restricted stock unit grants does Tigo Energy (TYGO) report for COO Yahui Chang?

The filing notes 96,000 shares underlying RSUs granted on November 11, 2024 and 52,099 shares underlying RSUs granted on August 1, 2025. Both RSU awards were made under Tigo Energy’s 2023 Incentive Plan.

What is the vesting schedule of the Tigo Energy (TYGO) RSUs held by COO Yahui Chang?

Each RSU grant vests in three equal installments. One-third vested and shares were delivered in 2025, with additional one-third tranches scheduled on the second and third anniversaries of the respective 2024 and 2025 grant-related dates, subject to continued service.

What does a code F transaction mean in the Tigo Energy (TYGO) Form 4?

A code F transaction represents payment of tax liability by delivering or withholding securities. In this case, Tigo Energy withheld 12,734 shares from COO Yahui Chang to satisfy tax withholding obligations tied to RSU vesting.

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)

655 CAMPBELL TECHNOLOGY PARKWAY

(Street)

CAMPBELL CALIFORNIA 95008

(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)
08/03/2026

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	08/03/2026		F		12,734(1)	D	$1.91	200,260(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") 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 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, 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 the August 2025 Grant Date, subject to continued service through each such vesting date.

	/s/ Bill Roeschlein, as attorney-in-fact	08/05/2026
	** 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)