13D Filing: Discovery Group I, LLC and Aerohive Networks Inc (HIVE)

Item 3 of the Schedule 13D is hereby amended to read in its
entirety as follows:

The total purchase price for the 3,116,821 shares of Common
Stock beneficially owned by the Reporting Persons as of May 31, 2017 was approximately $20,478,232. The source of such funds was
the assets of Discovery Equity Partners, including proceeds of margin loans under margin loan facilities maintained in the ordinary
course of business by Discovery Equity Partners with a broker on customary terms and conditions. Discovery Equity Partners is the
legal owner of all of the Common Stock beneficially owned by Discovery Group.

Item 5 of the Schedule 13D is hereby amended to read in its
entirety as follows:

The information concerning percentages of ownership set forth
below is based on 52,840,074 shares of Common Stock outstanding as of April 28, 2017, as reported in the Company’s Quarterly
Report on Form 10-Q for the quarter ended March 31, 2017.

Discovery Equity Partners beneficially owns 3,116,821 shares
of Common Stock as of May 31, 2017, which represents 5.9% of the outstanding Common Stock.

Discovery Group beneficially owns 3,116,821 shares of Common
Stock as of May 31, 2017, which represents 5.9% of the outstanding Common Stock.

Discovery Group is the
investment manager of Discovery Equity Partners.   Discovery Group exercises ultimate voting and dispositive power of
the securities held by Discovery Equity Partners. As a consequence, Discovery Group may be deemed to share beneficial ownership
of all of the Common Shares owned by Discovery Equity Partners. Voting and disposition decisions at Discovery Group with respect
to the investment of such securities are made by a five-person investment committee (the “Committee”) which
makes such investment decisions by majority vote. No member of the Committee may act individually to vote or sell Common Shares
held by Discovery Equity Partners, nor does any such member have a veto right concerning the vote or sale of any such common stock.
Accordingly, no individual member of the Committee is deemed to beneficially own, and each individual member of the Committee expressly
disclaims beneficial ownership of, within the meaning of Rule 13d-3, any Common Shares held by Discovery Equity Partners solely
by virtue of the fact that he or she is a member of the Committee.

The transactions in Common Stock effected by the Reporting Persons
since those reported in the Schedule 13D filed by the Reporting Persons on May 22, 2017 are set out in Exhibit 1 hereto.

No person other than Discovery
Equity Partners is known to any Reporting Person to have the right to receive or the power to direct the receipt of dividends
from, or the proceeds from the sale of, any of the shares of Common Stock reported herein.

Item 6 of the Schedule 13D is hereby amended to read in its
entirety as follows:

There are no contracts,
arrangements, understandings or relationships (legal or otherwise) between or among any of the Reporting Persons and any other
person with respect to any securities of the Company other than the governing documents of Discovery Group and Discovery Equity
Partners, the margin loan facilities referred to under Item 3 above, the Joint Filing Agreements of the Reporting Persons
with respect to the Schedule 13D that were included as exhibits thereto, the Joint Filing Agreement of the Reporting Persons with
respect to this Amendment No. 6 included as Exhibit 2 to this Amendment No. 6, and the Power of Attorney granted by Michael
R. Murphy with respect to reports under Section 13 of the Securities Exchange Act of 1934, as amended, which Power of Attorney
is included as Exhibit 3 to this Amendment No. 6.

Date

DISCOVERY EQUITY PARTNERS, L.P.

By: Michael R. Murphy*

DISCOVERY GROUP I, LLC

By: Michael R. Murphy*

Mark Buckley

Attorney-in-Fact for Michael R. Murphy

List of transactions effected by the Reporting Persons in the
Company’s Common Stock since those reported in the Schedule 13D filed by the Reporting Persons on May 22, 2017.

Joint Filing Agreement dated as of June 1, 2017, by and between

Discovery Equity Partners
and Discovery Group.