VivoSim Labs, INC. — Director's Dealing 2012

Aug 9, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ORGANOVO HOLDINGS, INC. (ONVO)
CIK: 0001497253
Period of Report: 2012-08-02

Reporting Person: Presnell Sharon Collins (EVP, Research & Dev & CTO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-08-02	Common Stock	M	224064	$.08	Acquired	224064	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-08-02	Stock Option (Right to Buy)	$.08	M	224064	Disposed	2021-10-13	Common Stock (224064)	Direct

Footnotes

F1: 25% of the option shares vest and become exercisable on May 2, 2012 and the remaining shares vest in 3 equal annual installments thereafter.