VivoSim Labs, INC. — Director's Dealing 2012

Mar 20, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ORGANOVO HOLDINGS, INC. (ONVO)
CIK: 0001497253
Period of Report: 2012-03-16

Reporting Person: MICHAELS BARRY D (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-03-16	Common Stock	P	10000	$1.00	Disposed	10000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-03-16	Warrants (Right to Buy)	$1	P	10000	Disposed	2017-03-16	Common Stock (10000)	Direct