Common use of Instrument of Adherence Clause in Contracts

Instrument of Adherence. Reference is hereby made to that certain Registration Rights Agreement, dated as of March 10, 2016, among Caladrius Biosciences, Inc., a Delaware corporation (the “Company”), and the Purchasers party thereto, as amended and in effect from time to time (the “Registration Rights Agreement”). Capitalized terms used herein without definition shall have the respective meanings ascribed thereto in the Registration Rights Agreement. The undersigned, in order to become the owner or holder of 1,418,440 shares of Common Stock of the Company, hereby agrees that, from and after the date hereof, the undersigned has become a party to the Registration Rights Agreement in the capacity of an Purchaser Permitted Transferee, and is entitled to all of the benefits under, and is subject to all of the obligations, restrictions and limitations set forth in, the Registration Rights Agreement that are applicable to Purchaser Permitted Transferees. This Instrument of Adherence shall take effect and shall become a part of the Registration Rights Agreement immediately upon execution. Executed as of the date set forth below under the laws of the State of New York. Signature: ______________________________ Name: Title: Accepted: [ ] By: _________________________ Name: Title:

Instrument of Adherence. Reference is hereby made to that certain Registration Rights Agreement, dated as of March 10September [__], 2016, among Caladrius Biosciences, Inc., a Delaware corporation (the “Company”), and the Purchasers party thereto, as amended and in effect from time to time (the “Registration Rights Agreement”). Capitalized terms used herein without definition shall have the respective meanings ascribed thereto in the Registration Rights Agreement. The undersigned, in order to become the owner or holder of 1,418,440 [____] shares of Common Stock of the Company, hereby agrees that, from and after the date hereof, the undersigned has become a party to the Registration Rights Agreement in the capacity of an Purchaser Permitted Transferee, and is entitled to all of the benefits under, and is subject to all of the obligations, restrictions and limitations set forth in, the Registration Rights Agreement that are applicable to Purchaser Permitted Transferees. This Instrument of Adherence shall take effect and shall become a part of the Registration Rights Agreement immediately upon execution. Executed as of the date set forth below under the laws of the State of New York. Signature: ______________________________ Name: Title: Accepted: [ ] By: _________________________ Name: Title:

Instrument of Adherence. Reference is hereby made to that certain Registration Rights Agreement, dated as of March 10__________, 20162015, among Caladrius Biosciences, Inc.between Searchlight Minerals Corp., a Delaware Nevada corporation (the “Company”), and the Purchasers party theretoPurchaser, as amended and in effect from time to time (the “Registration Rights Agreement”). Capitalized terms used herein without definition shall have the respective meanings ascribed thereto in the Registration Rights Agreement. The undersigned, in order to become the owner or holder of 1,418,440 ______________ shares of Common Stock common stock, par value $0.001 per share, of the Company, hereby agrees that, from and after the date hereof, the undersigned has become a party to the Registration Rights Agreement in the capacity of an Purchaser Permitted Transfereea Holder, and is entitled to all of the benefits under, and is subject to all of the obligations, restrictions and limitations set forth in, the Registration Rights Agreement that are applicable to Purchaser Permitted TransfereesHolders. This Instrument of Adherence shall take effect and shall become a part of the Registration Rights Agreement immediately upon execution. Executed under seal as of the date set forth below under the laws of the State of New York___________________. Signature: Name: Title: Accepted: SEARCHLIGHT MINERALS CORP., a Nevada corporation By: __________________________________ Name: Title: Accepted: [ ] ByDate: _________________________ Name: Title:, 2015

Instrument of Adherence. Reference is hereby made to that certain Registration Rights Agreement, dated as of March July 10, 20162020, among Caladrius Biosciences, Inc., a Delaware corporation (the “Company”), and the Purchasers party thereto, as amended and in effect from time to time (the “Registration Rights Agreement”). Capitalized terms used herein without definition shall have the respective meanings ascribed thereto in the Registration Rights Agreement. The undersigned, in order to become the owner or holder of 1,418,440 [____] shares of Common Stock of the Company, hereby agrees that, from and after the date hereof, the undersigned has become a party to the Registration Rights Agreement in the capacity of an Purchaser Permitted Transferee, and is entitled to all of the benefits under, and is subject to all of the obligations, restrictions and limitations set forth in, the Registration Rights Agreement that are applicable to Purchaser Permitted Transferees. This Instrument of Adherence shall take effect and shall become a part of the Registration Rights Agreement immediately upon execution. Executed as of the date set forth below under the laws of the State of New York. Signature: ______________________________ Name: Title: Accepted: [ ] By: _________________________ Name: Title: