Company: SBXD
Filing Date: 2025-08-07
Form Type: 425
Source: 0001104659-25-075274
Chunk: 13

Company: SilverBox Corp IV
Filing Date: 2025-08-07
Form: 425
Chunk 13
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Lock-Up Agreements

As previously disclosed and in the Initial Current Report, concurrently with the
Closing, certain significant Company Holders (the “Significant Company Holders”) will enter into a Lock-Up
Agreement (collectively, the “Lock-Up Agreements”) with Pubco and SPAC Representative, pursuant to which the
Significant Company Holders will agree that the shares of Pubco Class A Stock received by each Significant Company Holder will be
locked up and subject to transfer restrictions, as described below, subject to certain exceptions. The shares of Pubco Class A Stock
held by each Significant Company Holder will be locked up until the earlier of (i) six (6) months after the date of the Closing (the
“Anniversary Release”); provided that, in the event the registration statement on Form S-1 filed with the SEC by
Pubco to register the resale of the Pubco Class A Stock (the “Resale Registration Statement”) has not been
declared effective on or prior to the Anniversary Release, then the Anniversary Release will be deemed to be the date such Resale
Registration Statement is declared effective by the SEC, (ii) the date on which Pubco consummates a liquidation, merger, capital
stock exchange, reorganization or other similar transaction after the Closing which results in all of Pubco’s shareholders
having the right to exchange their shares of Pubco Class A Stock for cash, securities or other property and (iii) the date upon
which the VWAP of Pubco Class A Stock equals or exceeds $12.00 per share (as adjusted for stock splits, stock dividends,
reorganizations and recapitalizations) for any twenty (20) Trading Days within any consecutive thirty (30) Trading Day period
commencing any time 150 days after the Closing Date.

The form of the Lock-Up Agreement is filed as Exhibit 10.3 to this Current Report on Form 8-K, and the foregoing description thereof is qualified in its entirety by reference to the full text of the form of Lock-Up Agreement and the terms of which are incorporated by reference herein.

Preferred Equity Investment Subscription Agreement

Contemporaneously with the
execution of the Business Combination Agreement, the Company and Pubco entered into subscription agreements (collectively, the “Preferred Equity Investment Subscription Agreements”) with certain investors (the “Preferred Equity Investors”), pursuant
to which, the Company agreed to issue, and the Preferred Equity Investors agreed to purchase, an aggregate of 3,100,000