Signing Day Sports (SGN) president exits SGN equity in merger deal

Rhea-AI Filing Summary

Signing Day Sports, Inc. director and president Jeffry Hecklinski reported disposing of his remaining equity interests in connection with a business combination. He returned 9,262 shares of common stock and an option covering 834 shares to the issuer, leaving zero shares and zero options of the company directly held.

Under a Business Combination Agreement effective at closing on March 16, 2026, he received 0.09334 common shares of BlockchAIn Digital Infrastructure, Inc. for each Signing Day Sports share, valued at $4.60 per BlockchAIn share. His option was fully vested, assumed by BlockchAIn, and converted into an option to purchase 78 BlockchAIn shares exercisable at $1,594.17 per share.

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

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X

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^*

Hecklinski Jeffry

(Last) (First) (Middle)

C/O SIGNING DAY SPORTS, INC.

8355 EAST HARTFORD RD., SUITE 100

(Street)

SCOTTSDALE ARIZONA 85255

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Signing Day Sports, Inc. [ SGN ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/16/2026

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	03/16/2026		D		9,262	D	(1)	0	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
Stock Option (right to buy)	$148.8	03/16/2026		D			834	(2)	03/14/2033	Common Stock	834	(2)	0	D

Explanation of Responses:

1. Pursuant to the Business Combination Agreement, dated as of May 27, 2025, by and among Signing Day Sports, Inc., a Delaware corporation (the "Registrant"), One Blockchain LLC, a Delaware limited liability company, BlockchAIn Digital Infrastructure, Inc., a Delaware corporation ("BlockchAIn"), BCDI Merger Sub I Inc., a Delaware corporation, and BCDI Merger Sub II LLC, a Delaware limited liability company, as amended (the "Business Combination Agreement"), on the date of the closing (the "Closing") of the transactions contemplated by the Business Combination Agreement, or March 16, 2026 (the "Closing Date"), the reporting person received 0.09334 common shares of BlockchAIn for every share of common stock of the Registrant held by the reporting person, subject to rounding adjustments, having a market value of $4.60 per share based on the first reported sale price of the common stock of BlockchAIn on the NYSE American LLC after the Closing, which was reported on March 17, 2026.

2. Pursuant to the terms of the Business Combination Agreement, on the Closing Date, the reporting person's option, which provided for vesting as to 209 shares immediately upon the date of grant, as to 156 shares on the one-year anniversary of the date of grant, and as to an aggregate of 469 shares in approximately equal increments at the end of each of the following 36 calendar months, immediately became fully vested, was assumed by BlockchAIn, and was automatically converted into an option to purchase 78 common shares of BlockchAIn exercisable for $1,594.17 per share.

	/s/ Jeffry Hecklinski	03/18/2026
	** 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)

FAQ

What insider transaction did Jeffry Hecklinski report for Signing Day Sports (SGN)?

Jeffry Hecklinski reported disposing of his Signing Day Sports holdings. He returned 9,262 common shares and a stock option for 834 shares to the issuer, leaving no directly held SGN shares or options after the transaction tied to a business combination closing.

How many Signing Day Sports (SGN) common shares were involved in Hecklinski’s Form 4?

The transaction covered 9,262 Signing Day Sports common shares. These shares were reported as a disposition to the issuer on March 16, 2026, in connection with closing a Business Combination Agreement that also exchanged his equity into BlockchAIn Digital Infrastructure, Inc. shares.

What happened to Jeffry Hecklinski’s Signing Day Sports (SGN) stock options?

Hecklinski disposed of a Signing Day Sports option covering 834 shares back to the issuer. At closing of the Business Combination Agreement, this option became fully vested, was assumed by BlockchAIn, and was converted into an option to purchase 78 BlockchAIn common shares at $1,594.17 per share.

What did Jeffry Hecklinski receive in the Signing Day Sports (SGN) business combination?

At closing, he received 0.09334 BlockchAIn common shares for every Signing Day Sports common share he held. The BlockchAIn shares were valued at $4.60 each, based on the first reported sale price after closing, effectively exchanging his SGN equity into BlockchAIn stock.

Does Jeffry Hecklinski still directly hold Signing Day Sports (SGN) securities after this Form 4?

Based on the reported figures, he no longer directly holds Signing Day Sports common shares or stock options. The Form 4 shows total shares and option shares following the transactions as zero, reflecting the disposition to the issuer at the business combination closing.