VivoSim Labs, INC. — Director's Dealing 2014

Dec 31, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ORGANOVO HOLDINGS, INC. (ONVO)
CIK: 0001497253
Period of Report: 2014-12-29

Reporting Person: David Eric (Chief Strategy Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-12-29	Common Stock	S	3700	$7.5011	Disposed	697706	Direct
2014-12-30	Common Stock	S	16300	$7.5609	Disposed	681306	Direct

Footnotes

F1: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F2: This transaction was executed in multiple sales through a sale order executed by a broker-dealer at prices ranging from $7.50 to $7.52. The price reported in this column reflects the weighted average sale price. The Reporting Person will provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F3: This transaction was executed in multiple sales through a sale order executed by a broker-dealer at prices ranging from $7.50 to $7.6250. The price reported in this column reflects the weighted average sale price. The Reporting Person will provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F4: This number does not include 840,000 shares of common stock underlying outstanding options held by Mr. David; post-transaction Mr. David continues to beneficially own or have a right to acquire 1,521,306 shares of common stock.