Offering Periods. This Plan will be administered on the basis of sequential six-month offering periods (each an “Offering Period”) until the Plan is terminated: # the six-month period commencing on March 15 and ending on the following September 14, and # the six-month period commencing on September 15 and ending on the following March 14. The Administrator may establish additional or alternative sequential or overlapping Offering Periods, which may have different durations, provided that no Offering Period may exceed 27 months. The first day of each Offering Period will be the “Date of Grant” for that Offering Period, and the last day of each Offering Period will be the “Purchase Date” for that Offering Period. In the event that the Purchase Date of a given Offering Period is not a day when the principal stock exchange or market on which the Common Stock is then traded (the “Principal Exchange”) is open for trading, then the Purchase Date will be the last day prior to such date when the Principal Exchange is open for trading.

The Administrator shall determine from time to time, in its sole discretion, the Offering Periods and Purchase Periods under the Plan. Each Offering Period shall consist of one or more Purchase Periods, as determined by the Administrator. Unless otherwise established by the Administrator prior to the start of an Offering Period, the Plan shall have two (2) Offering Periods (with concurrent Purchase Periods) that commence each calendar year, and each Offering Period shall be of approximately six (6) months’ duration, with the first such Offering Period beginning on the first Trading Day of February and ending on the last Trading Day of the immediately following July, and the second such Offering Period beginning on the first Trading Day of August and ending on the last Trading Day of the immediately following January. For the avoidance of doubt, unless otherwise established by the Administrator prior to the commencement thereof, the first Offering Period under the Plan shall commence on August 1, 2019 and shall end on January 31, 2020.

Offering Periods. Prior to the New Offering Period Commencement Date, the Plan was implemented by a series of Offering Periods of approximately twenty-four (24) months duration, with new Offering Periods commencing on or about May 1 and November 1 of each year and ending on April 30 and October 31, respectively, approximately twenty-four (24) months later. Beginning on the New Offering Period Commencement Date, the Plan shall be implemented by consecutive Offering Periods of approximately six (6) months duration, with new Offering Periods commencing on or about May 1 and November 1 of each year (or at such other time or times as may be determined by the Administrator) and ending on the following October 31 and April 30, respectively. The Plan shall continue until terminated in accordance with Section 20 hereof. The Administrator shall have the power to change the duration and/or the frequency of Offering Periods with respect to future offerings without stockholder approval if such change is announced at least five (5) days prior to the scheduled beginning of the first Offering Period to be affected.

The Plan shall be implemented by sequential Offerings of approximately six (6) months duration or such other duration as the Committee shall determine. Offering Periods shall commence and end on dates determined by the Administrator. Notwithstanding the foregoing, the Committee may establish additional or alternative concurrent, sequential or overlapping Offering Periods, a different duration for one or more Offering Periods or different commencing or ending dates for such Offering Periods; provided, however, that no Offering Period may have a duration exceeding twenty-seven (27) months. If the Committee shall so determine in its discretion, each Offering Period may consist of two (2) or more consecutive Purchase Periods having such duration as the Committee shall specify, and the last day of each such Purchase Period shall be a Purchase Date. If the first or last day of an Offering Period or a Purchase Period is not a Business Day, the Company shall specify the Business Day that will be deemed the first or last day, as the case may be, of the Offering Period or Purchase Period.

Offering Periods. The Plan will be implemented by consecutive, overlapping Offering Periods with a new Offering Period commencing on the first Trading Day on or after May 10 and November 10 each year, or on such other date as the Administrator will determine; provided, however, that the first Offering Period under the Plan will commence with the first Trading Day on or after November 10, 2018 and end on the first Trading Day on or before November 10, 2019. The Administrator will have the power to change the duration of Offering Periods (including the commencement dates thereof) with respect to future Offerings without stockholder approval if such change is announced prior to the scheduled beginning of the first Offering Period to be affected thereafter; provided, however, that no Offering Period may last more than 27 months.

Offering Periods. The Plan shall be implemented by consecutive Offering Periods which shall continue until the Plan expires or is terminated in accordance with Section 20 hereof. The Administrator shall have the power to change the duration of Offering Periods (including the commencement dates thereof) with respect to future Offerings without stockholder approval if such change is announced at least five (5) days prior to the scheduled beginning of the first Offering Period to be affected thereafter.

Offerings. The Company will make one or more offerings to eligible employees to purchase Common Stock under the Plan (“Offerings”) consisting of one or more Purchase Periods (as defined in Section 11) . Unless otherwise determined by the Administrator, an Offering will be 12 months long and will begin on the first business day occurring on or after each May 1 and November 1 and will end on the last business day occurring on or before the immediately following April 30 and October 31, respectively. The Administrator may, in its discretion, designate a different period for any Offering, provided that no Offering shall exceed 27 months in duration. Unless the Administrator determines otherwise, each Offering will be divided into two equal six-month Purchase Periods. Furthermore, unless as otherwise determined by the Administrator, Participants will only be permitted to participate in one Offering at a time.

“Purchase Period” means the period during an Offering Period and during which shares of Common Stock may be purchased on a Participant’s behalf in accordance with the terms of the Plan. Unless the Administrator provides otherwise, Purchase Periods will be the approximately six-month period commencing after one Exercise Date and ending with the next Exercise Date, except that the first Purchase Period of any Offering Period will commence on the Enrollment Date and end with the next Exercise Date.

The Plan shall be implemented by two offerings during each year of the Plan, commencing on or about October 1 and April 1 of each year, or as otherwise determined by the Board, and continuing thereafter for a period of six (6) months (each, an “Offering Period”). The first Offering Period under the Plan shall commence on October 1, 1992. The Board shall have the power to change the duration of Offering Periods (both before and after any such Offering Period has commenced) with respect to future offerings without stockholder approval. In no event, however, will any such Offering Period be longer than twenty-seven (27) months.

Except as otherwise set forth below, the Plan shall be implemented by a series of Offerings (each, an “Offering”) during which shares of Common Stock may be purchased by Participants. Offering Periods shall begin on February 1 and August 1 of each year and shall end on the next July 31 and January 31, respectively, occurring thereafter; provided, however, that the first Offering Period shall begin on the Effective Date and shall end on January 31, 2019.