X0306 4/A 2016-05-19 2016-05-23 0 0001484565 Capnia, Inc. CAPN 0001180469 MARIO ERNEST 1235 RADIO ROAD, SUITE 110 REDWOOD CITY CA 94065 1 0 1 0 Common Stock 2016-05-19 4 P 0 43169 1.1785 A 1683000 D Common Stock 2016-05-20 4 P 0 5637 1.20 A 1688637 D The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.13 to $1.20, inclusive, as of the date of the original transaction. The reporting person undertakes to provide to Capnia, Inc., any security holder of Capnia, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (1) on this Form 4. The Amount of Securities Beneficially Owned Following Reported Transactions inadvertently read as 1,863,000 due to scrivener's error. The Amount of Securities Beneficially Owned Following Reported Transactions inadvertently read as 1,868,637 due to scrivener's error. /s/ David O'Toole, Attorney-in-Fact 2016-08-18