VivoSim Labs, INC. — Director's Dealing 2016

May 12, 2016

SEC Form 5 — Annual Statement of Changes in Beneficial Ownership

Issuer: ORGANOVO HOLDINGS, INC. (ONVO)
CIK: 0001497253
Period of Report: 2016-03-31

Reporting Person: MICHAELS BARRY D (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-08-31	Common Stock	G	86808	$0.00	Disposed	0	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	372454	Indirect

Footnotes

F1: This transaction involved a gift of shares by the Reporting Person to his spouse.

F2: This number does not include 1,014,693 shares of common stock underlying outstanding options held by Mr. Michaels.