VivoSim Labs, INC. — Director's Dealing 2015

Aug 25, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ORGANOVO HOLDINGS, INC. (ONVO)
CIK: 0001497253
Period of Report: 2015-08-24

Reporting Person: MICHAELS BARRY D (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-08-24	Common Stock	F	100692	$2.32	Disposed	86808	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-08-24	Stock Option (Right to Buy)	$2.32	A	100692	Acquired	2025-08-24	Common Stock (100692)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	285646	Indirect

Footnotes

F1: The shares were withheld at the election of the Reporting Person to satisfy tax withholding obligations in connection with the partial vesting of restricted stock units granted in August 2012 in accordance with the terms of the Reporting Person's Equity Incentive Award Agreement dated August 2012.

F2: This number does not include 1,014,693 shares of common stock underlying outstanding options held by Mr. Michaels; post-transaction Mr. Michaels continues to beneficially own or have a right to acquire 1,387,147 shares of common stock (including the 285,646 shares held by spouse).

F3: The option was automatically issued pursuant to the terms of the Reporting Person's Equity Incentive Award Agreement dated August 2012.