BTC Development Sponsor LLC - 29 Sep 2025 Form 3 Insider Report for BTC Development Corp. (BDCI)

Reporting relationship: 10%+ Owner
Issuer ticker: BDCI
Reported as of: 29 Sep 2025
Net transaction value: $0
SEC form: 3
Accepted by SEC: 30 Sep 2025, 20:59:33 UTC
Source filing: View source filing
Reporting owner signature: /s/ R. Maxwell Smeal

Key filing fact

BTC Development Sponsor LLC filed Form 3 for BTC Development Corp. (BDCI) on 30 Sep 2025.

Key facts

This page summarizes BTC Development Sponsor LLC's Form 3 filing for BTC Development Corp. (BDCI).
0 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 30 Sep 2025, 20:59.

Change

No earlier filing in this sequence is available for direct comparison.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

View source filing

Reporting Owners (1)

CIK 0002086269 Primary reporting owner

BTC Development Sponsor LLC

Relationship: 10%+ Owner
Address: 2929 ARCH STREET, SUITE 1703, PHILADELPHIA
Signature: /s/ R. Maxwell Smeal
Signature date: 30 Sep 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

BDCI holding

Class A Ordinary Shares

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 512,500
Date: 29 Sep 2025
Ownership: Direct
Footnotes: F1, F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

BDCI holding Derivative

Class B Ordinary Shares

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 29 Sep 2025
Ownership: Direct
Underlying class: Class A Ordinary Shares
Underlying amount: 4,590,334
Exercise price
Footnotes: F2, F3, F7

BDCI holding Derivative

Warrants

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 29 Sep 2025
Ownership: Direct
Underlying class: Class A Ordinary Shares
Underlying amount: 128,125
Exercise price: $11.50
Footnotes: F2, F4, F5, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 7 footnotes

Footnote F1

These shares underlie 512,500 placement units of the issuer that BTC Development Sponsor LLC has irrevocably committed to purchase. Each placement unit consists of one Class A ordinary share and one-fourth (1/4) of one redeemable warrant.

Footnote F2

The reporting persons disclaim beneficial ownership of these securities, except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that a reporting person is the beneficial owner of such securities for any other purpose.

Footnote F3

The Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the issuer's business combination, or at any time and from time to time at the option of the holder, on a one-for-one basis, subject to certain adjustments described in the issuer's charter documents, and have no expiration date.

Footnote F4

The warrants will become exercisable at the later of 30 days after consummation of the issuer's initial business combination or 12 months from the completion of the issuer's initial public offering.

Footnote F5

The warrants will expire five years after the consummation of the issuer's initial business combination or earlier upon redemption of all of the issuer's outstanding Class A ordinary shares or the issuer's liquidation.

Footnote F6

These warrants underlie 512,500 units of the issuer that BTC Development Sponsor LLC has irrevocably committed to purchase.

Footnote F7

Includes up to 550,000 shares that are subject to forfeiture in the event the underwriters of the issuer's initial public offering do not exercise their over-allotment option in full.

SEC remarks

Exhibit 24 - Power of Attorney