Mr. Jason Gigliotti reports

SIENNA ANNOUNCES COBALT, NICKEL, AND COPPER MINERALIZATION INTERCEPTED BY RECONNAISSANCE DRILLING AT SLATTBERG PROJECT IN SWEDEN

Sienna Resources Inc. has released drill results from the recently completed seven-hole, 942-metre drill program at its Slattberg nickel-copper-cobalt project in Sweden. Drill results from this initial drill program at Slattberg show several significant intercepts of nickel and cobalt mineralization in areas that are along strike and downdip from historic mine workings in the area. These results include 2.8 metres averaging 1.05 per cent nickel and 1,125 parts per million cobalt and 0.79 per cent copper in drill hole SIE-18-3, and 13.0 m averaging 0.32 per cent nickel, 340 ppm cobalt, 0.28 per cent copper and 0.32 ppm platinum plus palladium, including 2.35 m averaging 0.87 per cent nickel, 594 ppm cobalt, 0.35 per cent copper and 0.73 ppm platinum plus palladium in drill hole SIE-18-5. This serves as clear evidence that additional bodies of nickel, cobalt and PGE-rich sulphide mineralization exist in the area, and remain open at depth and along strike.

Hole SIE-18-3 was drilled to the east of the historic Myrgruvans mine, in an area that was previously untested by drilling. However, magnetic surveys in early 2018 showed a strong anomaly in the area, which was generated by the nickel bearing pyrrhotite-rich mineralization intercepted by hole SIE-18-3. The target remains open along strike and at depth.

Hole SIE-18-4 was drilled in the vicinity of another strong magnetic anomaly, farther to the west along the mining trend. Mining maps from the area showed historic workings extending to a depth of 40 m in the area. However, hole SIE-18-4 entered mine workings at 76.8 m depth and was lost when drilling could not continue through a stope. Thus, mining in the area continued to significantly greater depths than had been indicated by the historic records.

Hole SIE-18-5 was drilled from the same drill pad as SIE-18-4, but was set back 7.5 m and drilled a steeper angle. The hole intercepted pyrrhotite-rich mineralization with 13.0 m averaging 0.32 per cent nickel, 0.28 per cent copper, 0.034 per cent cobalt and 0.32 ppm platinum plus palladium (true widths interpreted to be 55 to 65 per cent of the interval). This confirmed the presence of mineralization extending below the mine workings, and the likely source of the magnetic anomaly. Further, the thickness of massive and semi-massive sulphide in hole SIE-18-5, along with brecciated textures, suggests that the mineralization may be broadening at depth. The target remains open at depth and along strike.

Hole SIE-18-6 was intended to test another strong magnetic anomaly that lies farther to the west of the magnetic anomaly targeted by holes SIE-18-4 and SIE-18-5, and likely represents an extension of that body of mineralization. However, hole SIE-18-06 deviated substantially from its intended target and failed to test the magnetic anomaly. Thus, this target remains untested.

Jason Gigliotti, president of Sienna, states: "We are pleased with the initial drilling results. We plan to continue to establish the origin of the positive indicators and focus on expanding the scope of the project in the summer."

Drill hole       From (m)       To (m)   Length (m)       Ni (%)     Co (ppm)       Cu (%)  Pd+Pt (ppm)

SIE-18-3            52.8         55.6          2.8         1.05        1,125         0.79         0.45
SIE-18-4            77.3                  Hole lost in unmapped mining stope
SIE-18-5           114.7        116.2          1.5         0.29          484         0.67         0.37
SIE-18-5           118.0        131.0         13.0         0.32          338         0.28         0.37
including          118.0        124.6          6.6         0.45          500         0.36         0.42
including          118.0        120.4          2.4         0.87          594         0.35         0.73
SIE-18-7              90        90.65         0.65         0.20          250         0.25         0.14

About Sienna Resources Inc.

The Slattberg cobalt-nickel-copper project consists of three adjacent exploration permits comprising approximately 12,733 contiguous acres.

Slattberg is located 25 kilometres northwest of Falun, Sweden. Slattberg is a historic mining camp hosting cobalt-nickel-copper-rich massive sulphide mineralization that occurs within a two-kilometre belt of historic nickel-copper mines.

The technical contents of this release were approved by Greg Thomson, PGeo, a qualified person as defined by National Instrument 43-101.