BTC Development Sponsor LLC — SEC Insider Profile, Roles & Companies

Initial ownership (Form 3) 3 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Sept. 30, 2025	BDCIU	Class A Ordinary Shares	·	Direct
Sept. 30, 2025	BDCIU	Class B Ordinary Shares→ Class A Ordinary Shares	·	Direct
Sept. 30, 2025	BDCIU	Warrants→ Class A Ordinary Shares	·	Direct