UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: July 1, 2026 5:30 P.M.
Form: S-4
CIK: 0002109869
Company Name: D. Boral ARC Merger Corp
File Number: 333-297214
CIK: 0002110790
Company Name: Exascale Labs Inc.
File Number: 333-297214-02
CIK: 0002065779
Company Name: D. Boral ARC Acquisition I Corp.
File Number: 333-297214-01