Company: BTBT
Filing Date: 2025-08-15
Form Type: DEFA14A
Source: 0001213900-25-077439
Chunk: 0

Company: Bit Digital, Inc
Filing Date: 2025-08-15
Form: DEFA14A
Chunk 0
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<div align='center'>UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 14A
(RULE 14a-101)

INFORMATION REQUIRED IN
PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934 (Amendment No. ___)</div>

| Filed by the Registrant                    | ☒ |
| Filed by a Party other than the Registrant | ☐ |

Check the appropriate box:

| ☐ | Preliminary Proxy Statement |

| ☐ | Confidential, for Use of                               
 the Commission Only (as permitted by Rule 14a-6(e)(2)) |

| ☐ | Definitive            
 Proxy Statement       |
| ☒ | Definitive Additional 
 Materials             |

| ☐ | Soliciting Material under §240.14a-12 |

<div align='center'>Bit Digital, Inc.

(Name of Registrant as Specified In Its Charter)</div>

| (Name of Person(s) Filing Proxy Statement, if other than the Registrant) |

Payment of Filing Fee (Check the appropriate box):

| ☒ | No fee required. |

| ☐ | Fee paid previously with preliminary 
 materials.                           |

| ☐ | Fee computed on table in exhibit                                    
 required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

Dear Shareholders,

The Board and management of Bit Digital are recommending
that you vote FOR the proposal to increase the number of authorized shares, as outlined in our proxy statement dated August
5, 2025.

The purpose of this letter is to elaborate on the “Purpose of the Proposal; Principal Effects” in the proxy statement
and to explain why the proposed increase in authorized shares is essential to our strategy and long-term shareholder value creation.

In June of this year, Bit Digital announced a
strategic pivot away from our historical Bitcoin mining business, which we viewed has having become overly competitive with eroding profit
margins. Instead, we have refocused our operational and financial resources on the accumulation and staking of Ethereum as our core treasury
holding.

We believe this transition positions Bit Digital
to become a leading public-market vehicle for Ethereum exposure. Scale is critical in executing this strategy. Larger, well-capitalized
crypto treasury companies have shown they can lower their cost of capital, access more attractive financing