0001829126-26-009632 Sample Contracts

INDEMNIFICATION AGREEMENT
Indemnification Agreement • September 2nd, 2026 • Exascale Labs Holdings Inc. • Services-prepackaged software • Delaware

This Indemnification Agreement (this “Agreement”), dated as of [ ], is by and between Exascale Labs Holdings Inc., a Delaware corporation (the “Company”) and [ ] (the “Indemnitee”).

SAFE HOLDER ACKNOWLEDGEMENT AND LOCK-UP AGREEMENT
Safe Holder Acknowledgement and Lock-Up Agreement • September 2nd, 2026 • Exascale Labs Holdings Inc. • Services-prepackaged software

This Acknowledgement and Lock-Up Agreement (this “Agreement”) is dated as of [ ], 2026, by and between the undersigned holder (the “SAFE Holder”) and Exascale Labs Inc., a Delaware corporation (the “Company”). Capitalized terms used but not otherwise defined herein shall have the meanings ascribed to them in the Merger Agreement (as defined below).

FORM OF LOCK-UP AGREEMENT
Lock-Up Agreement • September 2nd, 2026 • Exascale Labs Holdings Inc. • Services-prepackaged software • Delaware

THIS LOCK-UP AGREEMENT (this “Agreement”) is dated as of [ ], 2026, by and between the undersigned (the “Holders”) and D. Boral ARC Merger Corporation, a Delaware corporation and a wholly-owned subsidiary of Parent (as defined below) (“Purchaser”). Capitalized terms used and not otherwise defined herein shall have the meanings given such terms in the Merger Agreement (as defined below).