Perspective Therapeutics (CATX) 8-K Entry into a Material Definitive Agreement

Exhibit 10.86

Addendum No.1 to

Contract №840/08624332/1620 -15

Date of signature: 18 December 2015

THE SELLER/THE MANUFACTURER

Open Joint Stock Company «Institute of The Nuclear Materials» (JSC «INM»)

624250, Russia, Sverdlovsk Region,

Zarechniy, PO Box 29

Phone.: 7 (34377) 362 64

FAX: 7 (34377) 733 46

E-mail:shipping@inm-rosatom.ru

THE BUYER

The Company IsoRay Medical Inc.

350 Hills Street, Suite 106

Richland, WA 99354-5411 USA

THE CONSIGNEE

The Company IsoRay Medical Inc.

350 Hills Street, Suite 106

Richland, WA 99354-5411 US

Airport of destination: Seattle or Portland, USA

NOTIFICATION

FedEX Trade Networks 16353 NE Cameron Blvd

Portland, Oregon 97230 USA

Phone: +1503-255 1391 ext.14

THE END USER

The Company IsoRay Medical Inc.

350 Hills Street, Suite 106

Richland, WA 99354-5411 USA

THE SHIPPER

Joint Stock Company «Institute of Nuclear Materials» (JSC «INM»)

624250, Russia, Sverdlovsk Region,

Zarechniy, PO Box 29

Phone.: 7 (34377) 362 64

FAX: 7 (34377) 733 46

E-mail:shipping@inm-rosatom.ru

TERMS OF DELIVERY

CPT airport Seattle or Portland, USA

(Incoterms 2010)

THE BUYERSand THE SELLERShave mutually agreed to prolong the period of validity of the present contract till the 31^st of March, 2016.

All other terms and conditions of Contract №840/08624332/1620 -15remind unchanged

The present Addendum is an integral part of the above mentioned contract and may be signed by E-mail.

THE SELLERS	THE BUYERS
/s/Dmitrii  Markov	/s/ Dwight Babcock
Director General JSC INM	Dwight Babcock
	CEO IsoRay Medical