Yahui Chang - 07 Oct 2026 Form 4 Insider Report for TIGO ENERGY, INC. (TYGO)

Reporting relationship: Chief Operating Officer
Issuer ticker: TYGO
Reported as of: 07 Oct 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 09 Oct 2026, 16:32:51 UTC
Prior SEC filing: 11 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Bill Roeschlein, as attorney-in-fact

Filing notes and source

Key filing fact

Yahui Chang filed Form 4 for TIGO ENERGY, INC. (TYGO) on 09 Oct 2026.

Key facts

This page summarizes Yahui Chang's Form 4 filing for TIGO ENERGY, INC. (TYGO).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 09 Oct 2026, 16:32.

Change

Previous filing in this sequence was filed on 11 Aug 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001976736 Primary reporting owner

Chang Yahui

Relationship: Chief Operating Officer
Address: 983 UNIVERSITY AVENUE, SUITE B, LOS GATOS
Signature: /s/ Bill Roeschlein, as attorney-in-fact
Signature date: 09 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TYGO transaction

Common Stock

Tax liability

Transaction value
Shares: -23,463
Change %: -8.9%
Price: $0.9100^*
Shares after: 239,497
Date: 07 Oct 2026
Ownership: Direct
Footnotes: F1, F2, F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote 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").

Footnote 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.

Footnote 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.

Footnote 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.