Cao Yu - 12 May 2026 Form 4 Insider Report for FiEE, Inc. (FIEE)

Reporting relationship: Chief Financial Officer, Director, 10%+ Owner
Issuer ticker: FIEE
Reported as of: 12 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 14 May 2026, 17:54:39 UTC
Prior SEC filing: 13 May 2025
Source filing: View source filing
Reporting owner signature: /s/ Cao Yu

Key filing fact

Cao Yu filed Form 4 for FiEE, Inc. (FIEE) on 14 May 2026.

Key facts

This page summarizes Cao Yu's Form 4 filing for FiEE, Inc. (FIEE).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 14 May 2026, 17:54.

Change

Previous filing in this sequence was filed on 13 May 2025.
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 0002054128 Primary reporting owner

Yu Cao

Relationship: Chief Financial Officer, Director, 10%+ Owner
Address: C/O FIEE, INC., 3-33, 2-CHOME UTAJIMA, NISHIYODOGAWA DST, OSAKA, JAPAN
Signature: /s/ Cao Yu
Signature date: 14 May 2026

Reported non-derivative transactions

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

FIEE transaction

Common Stock

Award

Transaction value
Shares: +143,561
Change %: +9.1%
Price: $0.000000^*
Shares after: 1,728,927
Date: 12 May 2026
Ownership: Direct
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Represents an award of restricted stock units (collectively, the "RSUs" and each, an "RSU"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. These RSUs vest as follows: 30% on the first anniversary of the grant date, 30% on the second anniversary of the grant date, and the remaining 40% on the third anniversary of the grant date, subject to the Reporting Person's continued employment through each applicable vesting date.