UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Delaware 85-3810850 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) Title of each class Trading Symbol(s) Name of each exchange on which registered Units, each consisting of one share of Common Stock and one-half of one Redeemable Warrant AACIU The Nasdaq Stock Market LLC Common Stock, par value $0.0001 per share AACI The Nasdaq Stock Market LLC Warrants, each exercisable for one share ...