Concrete Pumping Holdings Inc. Watch

from 8-K 14 pages Concrete Pumping Holdings, Inc. 2018 Omnibus Incentive Plan as Amended April 25, 2023

from 10-K 18 pages Concrete Pumping Holdings, Inc. Amended and Restated Restricted Share Award Notice

from 10-K 16 pages Concrete Pumping Holdings, Inc. Restricted Share Award Notice

from 8-K 23 pages Concrete Pumping Holdings, Inc. 2018 Omnibus Incentive Plan as Amended October 29, 2020

from 8-K 14 pages Settlement Agreement and Release

from S-4 3 pages First Amendment to Stockholders Agreement

from S-4 ~5 pages Tender and Support Agreement

from S-4 3 pages Dealer Manager and Solicitation Agent Agreement

from S-1 3 pages First Amendment to Stockholders Agreement

from 8-K12B 18 pages Concrete Pumping Holdings, Inc. 2018 Omnibus Incentive Plan

from 8-K12B 19 pages Indemnity Agreement

from 8-K12B 3 pages Concrete Pumping Holdings Acquisition Corp. 28 West 44th Street, Suite 501 New York, New York 10036 December 6, 2018

from 8-K12B 57 pages Stockholders Agreement

from 8-K12B 38 pages Pledge and Security Agreement

from 8-K12B 51 pages Dated 6 December 2018 Camfaud Group Limited and Others as Chargors and Guarantors and Wells Fargo Capital Finance (Uk) Limited as Uk Security Agent Uk Debenture Condor House 5-10 St. Paul’s Churchyard London Ec4m 8al Tel. +44 (0)20 3201 5000 Fax: +44 (0)20 3201 5001 WWW.MORGANLEWIS.com Contents

from 8-K12B 77 pages US Guaranty and Security Agreement

from 8-K12B 220 pages Material contract

from 10-Q 69 pages Project Boom Senior Secured Term Facility Amended and Restated Commitment Letter

from 8-K 7 pages Industrea Acquisition Corp. Convertible Promissory Note

from 8-K 4 pages Reference Is Made to Each Of: (I) That Certain Agreement and Plan of Merger, Dated as of the Date Hereof (The “Merger Agreement”), by and Among Concrete Pumping Holdings Acquisition Corp., a Delaware Corporation and Wholly Owned Subsidiary of Industrea (“Newco”), Industrea Acquisition Corp., a Delaware Corporation (“Industrea”), Concrete Pumping Intermediate Acquisition Corp., a Delaware Corporation and a Wholly Owned Subsidiary of Newco (“Concrete Parent”), Concrete Pumping Merger Sub Inc., a Delaware Corporation and a Wholly Owned Subsidiary of Concrete Parent (“Concrete Merger Sub”), Industrea Acquisition Merger Sub Inc., a Delaware Corporation and a Wholly Owned Subsidiary of Newco (“Industrea Merger Sub”), Concrete Pumping Holdings, Inc., a Delaware Corporation (The “Company”) and Pgp Investors, LLC, a Delaware Limited Liability Company, Solely in Its Capacity as the Holder Representative Thereunder, and (II) That Certain Rollover Agreement, Dated as of the Date Hereof (The “Rollover Agreement”), by and Among, Newco, the Company and BBCP Investors, LLC (“Bbcpi”). as a Condition and Material Inducement to Each of the Company’s and Bbcpi’s Execution and Delivery of the Merger Agreement and the Rollover Agreement, Respectively, and Agreement to Contemplate the Transactions Contemplated Thereby (The “Contemplated Transactions”), Each of Industrea, Argand Partners Fund, LP (“Argand”), Industrea Alexandria LLC (“Industrea Alexandria”), the Company and Bbcpi Agrees as Follows