Hinge Health, Inc. Class A Common Stock Certificate Issued to Alexander David Sample

Exhibit 4.2

CLASS A COMMON STOCK CLASS A COMMON STOCK PAR VALUE $0.00001 Certificate Shares Number * * 0 0 0 0 0 0 * * * * * * * * * * * * * * * * * * ZQ00000000 * * * 0 0 0 0 0 0 * * * * * * * * * * * * * * * * * * * * * 0 0 0 0 0 0 * * * * * * * * * * * * * * * * Hinge Health, Inc. * * * * * 0 0 0 0 0 0 * * * * * * * * * * * * * * * INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE * * * * * * 0 0 0 0 0 0 * * * * * * * * * * * * * * ** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample SEE REVERSE FOR CERTAIN DEFINITIONS **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David THIS CERTIFIES THAT Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** r. Alexander David Sample **** r. Alexander David Sample **** Mr. Alexander David Sample **** Mr. MR. Alexander David SAMPLE ample **** Mr. Alexander David &Sample MRS. **** Mr. Alexander SAMPLE David Sample **** Mr. Alexander & David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr Alexander David Sample **** Mr. Alexander David Sample **** CUSIP 433313 10 3 Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander MR. David Sample SAMPLE **** Mr. lexander David Sample **** &Mr. Alexander MRS. David Sample SAMPLE **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** r. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Sample **** Mr. Sample is the owner of **000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares*** *000000**Shares *000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares**** 000000**Shares 000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****0 THIS CERTIFICATE IS TRANSFERABLE IN 00000**Shares *** 000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000** ZERO HUNDRED THOUSAND hares****000000**Shares****00 0000**Shares *000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000** hares****000000**Shares****000 CITIES DESIGNATED BY THE TRANSFER 000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000 Shares****0000 AGENT, AVAILABLE ONLINE AT 00**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000 Shares****00000 0**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000 ZERO HUNDRED AND ZERO*** Shares****000000 www.computershare.com **Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000 Shares****000000* *Shares****000000**Shares****000000**Shares****000000** Shares****000000** Shares****000000**Shares****000000**Shares****000000**Shares****000000** Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**S FULLY-PAID AND NON-ASSESSABLE SHARES OF CLASS A COMMON STOCK OF Hinge Health, 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 Bylaws, 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. DATED DD-MMM-YYYY FACSIMILE SIGNATURE TO COME g eHealth, I COUNTERSIGNED AND REGISTERED: i n RPORA n c . President HC O T E TRANSFER AGENT COMPUTERSHARE AND REGISTRAR, TRUST COMPANY, N.A. March 10, 2016 FACSIMILE SIGNATURE TO COME Delawa r e Secretary By AUTHORIZEDSIGNATURE PO Box 43004, Providence RI ###-###-#### MR A SAMPLE DESIGNATION (IF ANY) ADD 1 ADD 2 ADD 3 ADD 4 CUSIP/IDENTIFIER XXXXXX XX X Holder ID XXXXXXXXXX Insurance Value 00.1,000,000 Number of Shares 123456 DTC 12345678901234512345678 Certificate Numbers Num/No Denom. Total. 1234567890/12345678901234567890 ###-###-#### 121212 ###-###-####/12345678901234567890 ###-###-#### 343434 ###-###-####/12345678901234567890 ###-###-#### 565656 Total Transaction 7

.HINGE HEALTH, INC.——- THE COMPANY WILL FURNISH WITHOUT CHARGE TO EACH SHAREHOLDER WHO SO REQUESTS, A SUMMARY OF THE POWERS, DESIGNATIONS, PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL OR OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OF THE COMPANY AND THE QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS OF SUCH PREFERENCES AND RIGHTS, AND THE VARIATIONS IN RIGHTS, PREFERENCES AND LIMITATIONS DETERMINED FOR EACH SERIES, WHICH ARE FIXED BY THE CERTIFICATE OF INCORPORATION OF THE COMPANY, AS AMENDED, AND THE RESOLUTIONS OF THE BOARD OF DIRECTORS OF THE COMPANY, AND THE AUTHORITY OF THE BOARD OF DIRECTORS TO DETERMINE VARIATIONS FOR FUTURE SERIES. SUCH REQUEST MAY BE MADE TO THE OFFICE OF THE SECRETARY OF THE COMPANY OR TO THE TRANSFER AGENT. THE BOARD OF DIRECTORS MAY REQUIRE THE OWNER OF A LOST OR DESTROYED STOCK CERTIFICATE, OR HIS, HER, ITS OR THEIR LEGAL REPRESENTATIVES, TO GIVE THE COMPANY A BOND TO INDEMNIFY IT AND ITS TRANSFER AGENTS AND REGISTRARS AGAINST ANY CLAIM THAT MAY BE MADE AGAINST THEM ON ACCOUNT OF THE ALLEGED LOSS OR DESTRUCTION OF ANY SUCH CERTIFICATE.- . The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations:——- TEN COM-- as tenants in common-UNIF GIFT MIN ACT-—(Cust)-Custodian-(Minor) TEN ENT-- as tenants by the entireties—under Uniform Gifts to Minors Act-(State) JT TEN-- and as jointnot tenants as tenantswithinrightcommon of survivorship-UNIFâ€^TRF MIN ACT-—(Cust)-Custodian (until age-) —-(Minor)—under Uniform Transfers to Minors Act (State) Additional abbreviations may also be used though not in the above list.—-——PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE For value received, hereby sell, assign and transfer unto—- (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING POSTAL ZIP CODE, OF ASSIGNEE)—-———-Shares of the Class A Common Stock represented by the within Certificate, and do hereby irrevocably constitute and appoint———-Attorney to transfer the said stock on the books of the within-named Company with full power of substitution in the premises.- Dated:--20 -THE SIGNATURE(S) Signature(s) SHOULD BE Guaranteed: GUARANTEED BY Medallion AN ELIGIBLE GuaranteeGUARANTOR StampINSTITUTION (Banks, —-Stockbrokers, Savings and Loan Associations and Credit Unions) WITH MEMBERSHIP IN AN APPROVED Signature: -SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15. Signature: —— Notice: The signature to this assignment must correspond with the name—— -as written upon the face of the certificate, in every particular,—-—without alteration or enlargement, or any change whatever.-———ThebasisIRS of certainrequires shares that the or unitsnamed acquiredtransferafteragent January(“we”) 1,report2011.theIf cost your —-shares or transfer or units the shares are covered or unitsbyusing the legislation, a specific andcostyoubasis requestedcalculation to sell —-method, specify athencostwebasishave calculationprocessed method, as youthen requested. we haveIf defaulted you did not to the —-firstneedin, additional first out (FIFO)informationmethod.aboutPlease cost basis. consult your tax advisor if you —-activity If you doinnotyourkeep account in contact for thewithtimethe periodissuer specified or do notbyhavestateany law, —-yourlaws property and transferred may become to the appropriate subject to statestate. unclaimed property