Forte Biosciences Inc. Watch

from 8-K 12 pages Forte Biosciences, Inc. Form of Pre-Funded Warrant to Purchase Common Stock

from 8-K 4 pages Amendment No. 2 to Preferred Stock Rights Agreement

from 8-K 12 pages Forte Biosciences, Inc. Form of Pre-Funded Warrant to Purchase Common Stock

from 8-K 3 pages Amendment No. 1 to Preferred Stock Rights Agreement

from 8-K 77 pages Preferred Stock Rights Agreement Dated as of July 12, 2022 Between Forte Biosciences, Inc. and Computershare Trust Company, N.A., as Rights Agent

from S-3 48 pages Forte Biosciences, Inc. Indenture Dated as of , 20 Trustee

from 10-Q 13 pages Forte Biosciences, Inc. Warrant to Purchase Common Stock

from 10-K 3 pages Description of Common Stock

from 10-Q 9 pages Warrant to Purchase Stock

from 10-Q 10 pages Warrant to Purchase Stock

from 10-Q 10 pages Warrant to Purchase Stock

from 10-Q 10 pages Warrant to Purchase Stock

from S-3 18 pages Tocagen Inc. and , as Warrant Agent Form of Debt Securities Warrant Agreement Dated as of [ ], 20 Tocagen Inc. Form of Debt Securities Warrant Agreement

from S-3 19 pages Tocagen Inc. and , as Warrant Agent Form of Preferred Stock Warrant Agreement Dated as of [ ], 20 Tocagen Inc. Form of Preferred Stock Warrant Agreement Article 1 Issuance of Warrants and Execution and Delivery of Warrant Certificates

from S-3 19 pages Tocagen Inc. and , as Warrant Agent Form of Common Stock Warrant Agreement Dated as of [ ], 20 Tocagen Inc. Form of Common Stock Warrant Agreement Article 1 Issuance of Warrants and Execution and Delivery of Warrant Certificates

from S-3 54 pages Tocagen Inc., Issuer and [Trustee], Trustee Indenture Dated as of [•], 20__ Debt Securities

from S-1/A 2 pages Common Stock Par Value $0.001 Certificate Number Common Stock This Certificate Is Transferable in Canton, Ma, Jersey City, Nj and College Station, Tx Shares Tocagen™ Tocagen Inc. Incorporated Under the Laws of the State of Delaware This Certifies That Cusip 888846 10 2 See Reverse for Certain Definitions Is the Owner of Fully-Paid and Non-Assessable Shares of Common Stock of Tocagen Inc. (Hereinafter Called the “Company”), Transferable on the Books of the Company in Person or by Duly Authorized Attorney, Upon Surrender of This Certificate Properly Endorsed. This Certificate and the Shares Represented Hereby, Are Issued and Shall Be Held Subject to All of the Provisions of the Certificate of Incorporation, as Amended, and the By-Laws, as Amended, of the Company (Copies of Which Are on File With the Company and With the Transfer Agent), to All of Which Each Holder, by Acceptance Hereof, Assents. This Certificate Is Not Valid Unless Countersigned and Registered by the Transfer Agent and Registrar. Witness the Facsimile Seal of the Company and the Facsimile Signatures of Its Duly Authorized Officers. Chief Executive Officer Secretary Tocagen Inc. Seal August 2007 Delaware Security Instructions on Reverse Dated Countersigned and Registered: Computershare Trust Company, N.A. Transfer Agent and Registrar, by Authorized Signature Tocagen Inc

from S-1 12 pages Warrant to Purchase Stock

from S-1 11 pages Warrant to Purchase Stock

from S-1 8 pages Voices Against Brain Cancer Research and Development Grant Agreement for Tocagen Inc