Warrant Information

Ticker: ZIONZ
CUSIP: 989701131
Date Issued: 11/14/2008
Units Outstanding: 1,915,203 as of 9/30/2018
Strike Price: $36.27

Ticker: ZIONW
CUSIP: 989701115
Date Issued: 10/19/2010
Units Outstanding: 29,281,540 as of 9/30/2018
Original Strike Price: $36.63



Record Date Warrant Exercise Price after Record Date Warrant Share Number

11/14/2018

34.8216

1.0519

8/16/2018

35.0300

1.0457

5/17/2018

35.2200

1.04000

2/15/2018

35.3660

1.0357

11/15/2017

35.4940

1.032

8/17/2017

35.6113

1.0286

5/18/2017

35.6980

1.0261

2/16/2017

35.7596

1.0243

11/16/2016

35.8181

1.0227

8/18/2016

35.8941

1.0205

5/19/2016

35.9834

1.0180

2/18/2016

36.0521

1.0160

11/18/2015

36.1370

1.0136

8/20/2015

36.1976

1.0119

5/21/2015

36.2567

1.0103

2/19/2015

36.3194

1.0086

11/20/2014

36.3617

1.0074

8/21/2014

36.3988

1.0064

5/22/2014

36.4378

1.0053

2/20/2014

36.4760

1.0042

11/22/2013

36.5132

1.0032

8/22/2013

36.5511

1.0022

5/23/2013

36.5888

1.0011

Section 6.02 of the Warrant Agreement - Adjustments to Number of Shares. Concurrently with any adjustment to the Exercise Price under Section 6.01, the Number of shares will be adjusted such that the Number of Shares in effect immediately following the effectiveness of such adjustment will be equal to the Number of Shares in effect immediately prior to such adjustment, multiplied by a fraction, (i) the numerator of which is the Exercise Price in effect immediately prior to such adjustment and (ii) the denominator of which is the Exercise Price in effect immediately following such adjustment.

(d) If we make or pay any cash dividend or distribution to all, or substantially all, holders of our outstanding common stock (other than (i) distributions described in clause (e) below, (iii) any dividend or distribution in connection with our liquidation, dissolution or winding up and (iii) any regular quarterly cash dividend on our common stock to the extent that the aggregate amount of such cash dividend per share of our common stock does not exceed the “dividend threshold amount” (as defined below) (subject to adjustment, as indicated below)), the exercise price will be decreased based on the following formula:

SP0 - C
EP1 = EP0 x ____________________________
SP0

Where:

EP0 = the exercise price in effect immediately prior to the close of the business on the ex-dividend date for such dividend or distribution:
EP1 = the exercise price in effect immediately after the close of business on the ex-dividend date for such dividend or distribution
SP0 = the average of the closing sale prices of our common stock over the ten consecutive trading-day period ending on, and including, the trading day immediately preceding the ex-dividend date for such distribution; and
C = the amount in cash per share that we distribute to holders of our common stock for such dividend or distribution minus the dividend threshold amount.

Preliminary Prospectus Supplement, May 2010

Exercise of Option to Cover Over-allotments, June 2010

Final Prospectus Supplement, Sep 2010


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