13D Filing: Starboard Value LP and Quantum Corp (QTM)

(b)

1. Sole power to vote or direct vote: 119,844 2. Shared power to vote or direct vote: 0 3. Sole power to dispose or direct the disposition: 119,844 4. Shared power to dispose or direct the disposition: 0

(c)

Other than the Notes having matured (as defined and described in Item 6 below), Starboard S LLC has not transacted in the Shares during the past sixty days.

C.

Starboard C LP

(a)

As of the close of business on November 15, 2017, Starboard C LP beneficially owned 97,846 Shares.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 97,846 2. Shared power to vote or direct vote: 0 3. Sole power to dispose or direct the disposition: 97,846 4. Shared power to dispose or direct the disposition: 0

(c)

Other than the Notes having matured (as defined and described in Item 6 below), Starboard C LP has not transacted in the Shares during the past sixty days.

D.

Starboard R LP

(a)

Starboard R LP, as the general partner of Starboard C LP, may be deemed the beneficial owner of the 97,846 shares owned by Starboard C LP.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 97,846 2. Shared power to vote or direct vote: 0 3. Sole power to dispose or direct the disposition: 97,846 4. Shared power to dispose or direct the disposition: 0

(c)

Starboard R LP has not entered into any transactions in the Shares during the past sixty days. Other than the Notes having matured (as defined and described in Item 6 below), Starboard C LP has not transacted in the Shares during the past sixty days.

E.       Starboard R GP

(a)

Starboard R GP, as the general partner of Starboard R LP, may be deemed the beneficial owner of the 97,846 shares owned by Starboard C LP.

Percentage: Less than 1%