Exercise4

WhiteFiber, Inc.

Total Value

$33.2K

Filing Date

Oct 16, 2026

1 transactions

Trade Summary

On Jul 31, 2026 through Aug 5, 2026, Sanfilippo Thomas, Chief Technology Officer, reported $33.2K of WhiteFiber, Inc. (WYFI) across 1 transactions. The filing covers Ordinary Shares, $01 par value and reflects balanced net activity of $0. Reported prices ranged from $26.34. Insider transactions are sourced from SEC Form 4 disclosures and should be reviewed alongside company fundamentals and the insider's broader trading history.

Insider Information

Name: Sanfilippo Thomas
Role: Chief Technology Officer
Location: NEW YORK, NY

Filing Details

Filing Date: Oct 16, 2026
Transaction Date: Jul 31, 2026
Accession Number: 0001213900-26-110436
Form Type: 4

Non-Derivative Transactions

Date	Security	Shares	Price	Type	Value
Jul 31, 2026	Ordinary Shares, $01 par value	4,412	—	Exercise	—
Aug 5, 2026	Ordinary Shares, $01 par value	1,259	$26.34	Tax Withholding	$33.2K

Derivative Transactions

Date	Security	Shares	Exercise Price	Type	Value
Jul 31, 2026	WYFI derivative	4,412	—	Exercise	—

Want live alerts when Sanfilippo Thomas trades again?

Download Insider Trades to track WYFI, follow insiders, and get mobile alerts when new SEC Form 4 filings are published.

iOS App Android App

Footnotes

(F1)Represents 4,412 Ordinary Shares, par value $0.01 per share, of the Issuer, which were issued upon vesting of Restricted Stock Units ("RSUs") on July 31, 2026, under the Issuer's 2025 Omnibus Equity Incentive Plan (the "Plan") pursuant to Rule 16b-3, of which a total of 30,880 have vested.
(F2)RSUs convert into Ordinary Shares on a one-for-one basis.
(F3)Represents Ordinary Shares, sold on August 5, 2026, to pay tax liability of the shares issued on July 31, 2026, upon the vesting of RSUs granted under the Issuer's Plan pursuant to Rule 16b-3. This does not represent a discretionary transaction by a reporting person.
(F4)The price reported in Column 4 is a weighted average price. These Ordinary Shares were sold in multiple transactions at prices ranging from $26.33 to $26.36, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, with full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(F5)On September 11, 2025, the Reporting Person was initially granted 70,588 RSUs, vesting in 12 equal quarterly installments with a one-year cliff, beginning on October 31, 2025.

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^*

Sanfilippo Thomas

(Last)

(First)

(Middle)

C/O WHITEFIBER, INC 31 HUDSON YARDS

FLOOR 11, SUITE 30

(Street)

NEW YORK

10001

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
WhiteFiber, Inc. [ WYFI ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
07/31/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Ordinary Shares, $01 par value	07/31/2026		M		4,412⁽¹⁾	A	⁽²⁾	21,732	D
Ordinary Shares, $01 par value	08/05/2026		F⁽⁴⁾		1,259⁽³⁾	D	$26.34⁽⁴⁾	20,473	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽²⁾	07/31/2026		M			4,412	⁽⁵⁾	⁽⁵⁾	Ordinary Shares	4,412	$0	39,708	D

Explanation of Responses:

1. Represents 4,412 Ordinary Shares, par value $0.01 per share, of the Issuer, which were issued upon vesting of Restricted Stock Units ("RSUs") on July 31, 2026, under the Issuer's 2025 Omnibus Equity Incentive Plan (the "Plan") pursuant to Rule 16b-3, of which a total of 30,880 have vested.

2. RSUs convert into Ordinary Shares on a one-for-one basis.

3. Represents Ordinary Shares, sold on August 5, 2026, to pay tax liability of the shares issued on July 31, 2026, upon the vesting of RSUs granted under the Issuer's Plan pursuant to Rule 16b-3. This does not represent a discretionary transaction by a reporting person.

4. The price reported in Column 4 is a weighted average price. These Ordinary Shares were sold in multiple transactions at prices ranging from $26.33 to $26.36, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, with full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

5. On September 11, 2025, the Reporting Person was initially granted 70,588 RSUs, vesting in 12 equal quarterly installments with a one-year cliff, beginning on October 31, 2025.

	/s/ Thomas Sanfilippo	10/16/2026
	** 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 as rendered by the SEC from accession 0001213900-26-110436.

WhiteFiber, Inc.

Trade Summary

Company Information

Insider Information

Filing Details

Non-Derivative Transactions

Derivative Transactions

Want live alerts when Sanfilippo Thomas trades again?

Footnotes

SEC Form 4

SEC Filing

SEC Form 4