Carrizo Oil & Gas Announces First Quarter 2018 Financial Results Release Date and Conference Call and Participation in Upcoming Conferences

HOUSTON–(BUSINESS WIRE)–Carrizo Oil & Gas, Inc. (Nasdaq: CRZO) will hold a conference
call to discuss 2018 first quarter financial results on Tuesday, May 8,
2018 at 10:00 AM Central Daylight Time. Carrizo plans to issue a press
release containing its financial and operating results after the market
closes on Monday, May 7, 2018.

Date & Time: Tuesday, May 8 at 10:00 AM CDT
Dial-In Number: (800) 931-1309 (U.S. & Canada)
+1 (212) 231-2913 (Intl./Local)

Telephone Replay Number:

(800) 633-8284 (U.S. & Canada)

+1 (402) 977-9140 (Intl./Local)

Enter Replay Reservation #:

21887873

The replay will be available through Tuesday, May 15, 2018 at
12:00 PM CDT.

A simultaneous webcast of the call may be accessed over the internet by
visiting our website at http://www.carrizo.com,
clicking on "Upcoming Events", and then clicking on "First Quarter 2018
Earnings Call." To listen, please go to the website in time to register
and install any necessary software. The webcast will be archived for
replay on the Carrizo website for 7 days.

Additionally, Carrizo management is scheduled to present at the
following upcoming conferences. A webcast of the presentations, if
available, as well as the slide books used can be accessed on the
Carrizo website at http://www.carrizo.com
under the “Investor Relations” section.

Citi 2018 Global Energy and Utilities Conference
Tuesday, May 15, 2018
Boston, MA
Stephens 2018 Energy Executive Summit
Wednesday, May 16, 2018
Little Rock, AR
Tudor, Pickering, Holt & Co. 14th Annual Hotter ‘N
Hell Energy Conference
Wednesday, May 16, 2018

Houston, TX

Carrizo Oil & Gas, Inc. is a Houston-based energy company actively
engaged in the exploration, development, and production of oil and gas
from resource plays located in the United States. Our current operations
are principally focused in proven, producing oil and gas plays primarily
in the Eagle Ford Shale in South Texas and the Permian Basin in West
Texas.

Contacts

Carrizo Oil & Gas, Inc.
Jeffrey P. Hayden, CFA
VP
– Investor Relations
(713) 328-1044
or
Kim
Pinyopusarerk
Manager – Investor Relations
(713)
358-6430