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Cypress Completes Drilling at Clayton Valley, Nevada with 97 meters of 1,144 ppm Lithium

Drill Results Exploration Programs

Suite 1610 - 777 Dunsmuir Street, Vancouver, BC, Canada, V7Y 1K4

www.cypressdevelopmentcorp.com

TSX Venture Exchange Symbol: CYP

Email: [email protected]

Telephone: (604) 687-3376

Facsimile: (604) 687-3119

NEWS RELEASE

April 3, 2018

Cypress Completes Drilling at Clayton Valley, Nevada

with 97 meters of 1,144 ppm Lithium

Vancouver, BC - Cypress Development Corp. (TSX-V: CYP) (OTCBB: CYDVF)

(Frankfurt: C1Z1) (“Cypress” or the “Company”) is pleased to announce results from

the last three holes drilled at the Company’s Clayton Valley lithium project in Nevada.

Today’s results include an intersection of 97 meters averaging 1 ,144 ppm Li in the

final hole, GCH-6, along with intersections of 122.4 meters averaging 977 ppm Li in

DCH-17 and 129.5 meters averaging 767 ppm Li in GCH-5. The Company has

completed its drilling program, and is awaiting the results of an independent resource

estimate currently underway.

Cypress Clayton Valley, Nevada Lithium Project location map:

https://www.cypressdevelopmentcorp.com/site/assets/files/3548/cyp-clayton-topo-

satalite-small.jpg

Drilling Highlights:

 All three holes show consistency in encountered Li grade with the

Company’s previous 20 holes drilled on the Dean and Glory properties.

 DCH-17, with 122.4 meters of 977 ppm Li, demonstrates the extension of

lithium mineralization into the southeast corner of Dean . This intersection

is comparable to the intersections in previous holes, DCH-15 and DCH -

16, to the north and west.

 GCH-5 and GCH -6 demonstrate the extension of lithium mineralization

south, into the east ern portion of Glory. The intersection of lithium in

GCH-5, with 129.5 meters of 767 ppm Li, is the thickest drilled-to-date at

the project.

 These three holes, as with all 20 previous holes, remain open at depth,

with DCH-17 ending in 797 ppm Li , GCH-5 in 665 ppm Li , and GCH-6 in

752 ppm Li.

 A f ull table of Clayton Valley drill results can be found here :

https://www.cypressdevelopmentcorp.com/site/assets/files/3573/cyp_drill

_hole_table_for_clayton_valley-_nevada.jpg

2

2017 Dean & Glory Projects, Clayton Valley, Nevada drill hole map:

https://www.cypressdevelopmentcorp.com/site/assets/files/3573/cyp_dean_glory_dill

_hole_map_march_2018.jpg

TABLE. Summary of Clayton Valley Project Drill Holes DCH-17, GCH-5 and GCH-6

Intersection (m) Lithium Values (ppm Li)

Drill Hole From To Length Min Max Average

DCH-17 2.0 124.4 122.4 548 1539 977

GCH-5 0.0 129.5 129.5 410 1298 767

GCH-6 3.0 100.0 97.0 699 1609 1144

Notes: Li=Lithium Metal, ppm=parts per million, m=meters, Average is weighted va lue by

sample length. All samples were submitted to Bureau Veritas in Reno, Nevada, for analysis.

Blind sample blanks and standards were inserted into the sample sequences at a rate of

approximately 1 per 20 samples.

With the completion of these three hol es, the Company has concluded its current

drilling on the Dean and Glory properties. All 23 of the Company’s drill holes will be

incorporated in an independent resource estimate currently underway. The results of

the resource estimate are expected later this month.

Daniel Kalmbach, CPG and consulting geologist to Cypress Development Corp., is

the qualified person as defined by National Instrument 43 -101 and has approved the

technical information in this release.

Cypress announces the resignation of Rober t Marvin as Vice President of

Exploration and Director of the Company. Cypress expresses its appreciation to Mr.

Marvin for his years of service and his key role in the discovery and exploration of

the Company’s Clayton Valley lithium deposit.

About Cypress Development Corp.:

Cypress Development Corp. is a publicly traded exploration company focused on

developing the Company’s 100%-owned Clayton Valley lithium project in the State of

Nevada, U.S.A.

Cypress' Dean & Glory Lithium Project is located immedia tely east of Albemarle’s

Silver Peak mine, North America’s only lithium brine operation. Recent exploration by

Cypress has discovered an extensive deposit of lithium -bearing claystone adjacent

to the brine field. With mineralization tested by drilling over a seven-kilometer trend,

the apparent size of the Dean & Glory deposit makes Clayton Valley a premier target

that has the potential to impact the future of lithium production in North America.

Cypress Development Corp. has approx. 56.0 million shares issued and outstanding.

To find out more about Cypress Development Corp. (TSX -V: CYP), visit our website

at www.cypressdevelopmentcorp.com.

CYPRESS DEVELOPMENT CORP.

“Dr. Bill Willoughby”

3

WILLIAM WILLOUGHBY, PhD., PE

Chief Executive Officer

For further information contact myself or:

Don Myers

Cypress Development Corp.

Director, Investor Relations

Telephone: 604-639-3851

Toll Free: 800-567-8181

Facsimile: 604-687-3119

Email: [email protected]

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES

PROVIDER ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THE

CONTENT OF THIS NEWS RELEASE.

This release includes certain statements that may be deemed to be "forward -looking

statements". All statements in this release, other than statements of historical facts, that

address events or developments that manag ement of the Company expects, are forward -

looking statements. Although management believes the expectations expressed in such

forward-looking statements are based on reasonable assumptions, such statements are not

guarantees of future performance, and actu al results or developments may differ materially

from those in the forward -looking statements. The Company undertakes no obligation to

update these forward -looking statements if management's beliefs, estimates or opinions, or

other factors, should change. Factors that could cause actual results to differ materially from

those in forward -looking statements, include market prices, exploration and development

successes, continued availability of capital and financing, and general economic, market or

business c onditions. Please see the public filings of the Company at www.sedar.com for

further information.