Mason Roger 4

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

AI-generated summary of this filing

Updated Mar 18, 2026

Signing Day Sports (SGN) Director Mason Roger Disposes 90,919 Shares

What Happened

Mason Roger, a director of Signing Day Sports, disposed of 90,919 shares of Signing Day on March 16, 2026. This was not an open-market sale but a disposition to the issuer in connection with the closing of a business combination that converted Signing Day shares into BlockchAIn shares.
The filing also shows a derivative disposition of 500 shares (related to an option). Under the deal terms, the reporting person's option was assumed by BlockchAIn and automatically converted into an option to purchase 47 BlockchAIn shares exercisable at $1,594.17 per share.

Key Details

Transaction date: March 16, 2026; Form 4 filed March 18, 2026.
Conversion ratio and value (per footnote): each Signing Day share converted into 0.09334 BlockchAIn shares. 90,919 Signing Day shares therefore converted into roughly 8,486 BlockchAIn shares, valued at about $4.60 per BlockchAIn share (≈$39k total based on the first reported sale price on NYSE American on March 17, 2026).
Derivative item: 500 shares labeled as a disposition (derivative) reflect the option treatment; the original option became fully vested, was assumed by BlockchAIn, and converted into an option for 47 BlockchAIn shares exercisable at $1,594.17 per share.
Shares owned after the transaction: not specified in the Form 4.
Filing timeliness: Form 4 was filed two days after the transaction date (reported March 18 for a March 16 transaction).

Context

This was a company-led transaction tied to the closing of a business combination (not a typical insider sale to raise cash). The 90,919 shares were converted into BlockchAIn stock under the merger terms rather than sold on the open market.
The converted option’s exercise price ($1,594.17) is far above the reported market price of BlockchAIn common stock ($4.60), meaning the converted option is out-of-the-money at the reported market price.

Form 4Exit

Period: 2026-03-16

Director

Transactions

Disposition to Issuer
Common Stock
[F1]
2026-03-16−90,919→ 0 total
Disposition to Issuer
Stock Option (right to buy)
[F2]
2026-03-16−500→ 0 total
Exercise: $148.80Exp: 2032-09-09→ Common Stock (500 underlying)

Footnotes (2)

[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.
[F2]Pursuant to the terms of the Business Combination Agreement, on the Closing Date, the reporting person's option, which provided for vesting as to 1/12 of the shares of the Registrant's common stock subject to the option on the 9th day of each March, June, September, or December, that follows September 9, 2022, immediately became fully vested, was assumed by BlockchAIn, and was automatically converted into an option to purchase 47 common shares of BlockchAIn exercisable for $1,594.17 per share.

Signature

/s/ Roger Mason Jr.|2026-03-18

1 file