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- S-4/A Registration of securities issued in business combination transactions
- 4.5 EX-4.5
- 8.1 EX-8.1
- 10.9 EX-10.9
- 10.10 EX-10.10
- 10.11 EX-10.11
- 10.12 EX-10.12
- 10.13 EX-10.13
- 10.14 EX-10.14
- 10.15 EX-10.15
- 10.16 EX-10.16
- 10.17 EX-10.17
- 10.18 EX-10.18
- 21.1 EX-21.1
- 23.1 EX-23.1
- 23.2 EX-23.2
- 23.3 EX-23.3
- 99.4 EX-99.4
- 4 Mar 22 424B3 Prospectus supplement
- 15 Feb 22 424B3 Prospectus supplement
- 11 Feb 22 EFFECT Notice of effectiveness
- 9 Feb 22 S-4/A Registration of securities issued in business combination transactions (amended)
- 3 Feb 22 S-4/A Registration of securities issued in business combination transactions (amended)
- 14 Jan 22 S-4/A Registration of securities issued in business combination transactions (amended)
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20 Dec 21 S-4/A Registration of securities issued in business combination transactions (amended)
- 5 Nov 21 S-4 Registration of securities issued in business combination transactions
Exhibit 23.3
INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM’S CONSENT
We consent to the inclusion in this Registration Statement of FirstMark Horizon Acquisition Corp. on Amendment No. 1 to Form S-4 of our report dated March 26, 2021, except for the effects of the restatements discussed in Note 2 – Amendment 1 to which the date is May 26, 2021 and Note 2 – Amendment 2, as to which the date is December 14, 2021, which includes an explanatory paragraph as to the Company’s ability to continue as a going concern, with respect to our audit of the financial statements of FirstMark Horizon Acquisition Corp. as of December 31, 2020 and for the period from August 13, 2020 (inception) through December 31, 2020, which report appears in the Prospectus, which is part of this Registration Statement. We also consent to the reference to our Firm under the heading “Experts” in such Prospectus.
/s/ Marcum LLP
Boston, MA
December 17, 2021