Rich Damon 4

4 · Signing Day Sports, Inc. · Filed Mar 18, 2026

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Updated Mar 18, 2026

Signing Day Sports (SGN) CFO Rich Damon Disposes 52,417 Shares

What Happened

Rich Damon, CFO of Signing Day Sports, reported a disposition to the issuer of 52,417 shares of Signing Day Sports common stock on March 16, 2026. The Form 4 shows a non‑cash conversion (price listed as N/A).
Under the Business Combination Agreement, each SGN share was converted into 0.09334 shares of BlockchAIn. That ratio implies Mr. Damon received roughly 4,892.6 BlockchAIn shares, which had a first reported sale price of $4.60 on the NYSE American (reported March 17, 2026), valuing the received shares at about $22,506. This was a conversion at closing of the business combination, not an open‑market sale.

Key Details

Transaction date: 2026-03-16 (Closing of the business combination). Filing date: 2026-03-18 (Form 4 filed timely).
Reported transaction code: D (Disposition to the issuer — conversion/surrender of shares under the merger/combination agreement).
Shares disposed: 52,417 SGN common shares. Form 4 lists the price as N/A because this was an exchange, not a cash sale.
Shares received (per footnote): 0.09334 BlockchAIn shares per SGN share → ~4,892.6 BlockchAIn shares; first reported market price $4.60 → ~ $22,506 total (based on BlockchAIn’s first reported sale price after the close).
Shares owned after transaction: Not specified in the filing.
Footnote: Transaction arose under the Business Combination Agreement dated May 27, 2025, and occurred at the Closing on March 16, 2026.

Context

This filing documents a conversion of Signing Day Sports stock into shares of the merged company (BlockchAIn) at closing — it is not an insider selling into the open market and therefore does not necessarily signal a change in the insider’s view of the combined company.
The dollar value above uses the first reported post‑close sale price for BlockchAIn (per the filing); the Form 4 lists N/A for price because consideration was non‑cash.

Form 4Exit

Period: 2026-03-16

CFO

Transactions

Footnotes (1)

[F1]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.

Signature

/s/ Damon Rich|2026-03-18

1 file