13D Filing: True Wind Capital, L.p. and Zix Corp (NASDAQ:ZIXI)

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Voting Rights

The Series B Holders are entitled to vote as a separate class on certain matters relating to the Series B Preferred Stock. Otherwise, the Series B Holders do
not have any voting rights, except as otherwise provided by the Texas Business Organizations Code.

Liquidation Rights

The Series B Preferred Stock has a liquidation preference equal to the sum of (i) the Stated Value and (ii) without duplication, any accrued but
unpaid preferred dividends.

Automatic Conversion

Following the Stockholder Approval (as defined below), each share of Series B Preferred Stock will automatically be converted into the number of shares of
Series A Preferred Stock equal to the liquidation preference of such share of Series B Preferred Stock divided by the accreted value of a share of Series A Preferred Stock on the date of conversion plus cash in lieu of fractional
shares. If the Stockholder Approval is not obtained, the Series B Preferred Stock will not be convertible into shares of Series A Preferred Stock or Common Stock.

Optional Redemption by Zix

At any time after the fourth
anniversary of the Closing Date, Zix may redeem any then-outstanding shares of Series B Preferred Stock for an amount per share of Series B Preferred Stock equal to the liquidation preference per share of the Series B Preferred Stock to be redeemed
as of the applicable redemption date multiplied by 1.50.

Holder Redemption Right

At any time after the seventh anniversary of the Closing Date, upon 90 days prior notice, each Series B Holder may elect to require Zix to redeem the
Series B Preferred Stock for an amount per share of Series B Preferred Stock equal to the liquidation preference per share of the Series B Preferred Stock to be redeemed as of the applicable redemption date multiplied by 1.50.

Change of Control

Upon a change of control (as defined
in the Series B Certificate of Designations), Zix is required to redeem the Series B Preferred Stock at a price per share of Series B Preferred Stock in cash equal to the greater of (i) the Series B Change of Control Redemption Price (as
defined below) of such share of Series B Preferred Stock and (ii) (A) the amount of cash such Series B Holder would have received plus (B) the fair market value of any other assets in each case had such Series B Holder, immediately
prior to such change of control, converted such shares of Series B Preferred Stock into shares of Series A Stock. The Series B Change of Control Redemption Price per share of Series B Preferred Stock is the product of the liquidation
preference of such share as of the date of determination multiplied by (1) 1.30 (if the change of control occurs before the first anniversary of the Closing Date), (2) 1.35 (if the change of control occurs on or after the first anniversary of
the Closing Date but before the second anniversary of the Closing Date), (3) 1.40 (if the change of control occurs on or after the second anniversary of the Closing Date but before the third anniversary of the Closing Date), (4) 1.45 (if the change
of control occurs on or after the third anniversary of the Closing Date but before the fourth anniversary of the Closing Date) and (5) 1.50 (if the change of control occurs on or after the fourth anniversary of the Closing Date).

Consent Rights

So long as any shares of Series B
Preferred Stock are outstanding, the consent of the holders of a majority of the then-outstanding shares of Series B Preferred Stock is necessary for Zix to effect (1) any amendment, alteration or repeal to the Articles of Incorporation or the
Series B Certificate of Designations in a manner that would adversely affect the rights, preferences, privileges or power of the Series B Preferred Stock, (2) any amendment or alteration to the Articles of Incorporation or any other action to
authorize or create, or increase the number of authorized or issued shares of, or any securities convertible into shares of, or reclassify any security into, or issue any parity stock or senior stock as to dividend or liquidation rights,
(3) the issuance of shares of Series B Preferred Stock, (4) any action that would cause Zix to cease to be treated as a domestic corporation for U.S. federal income tax purposes, or (5) the incurrence of indebtedness that would cause
Zix to exceed a specified leverage ratio.

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