SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Wood River Trust (Last) (First) (Middle) 1007 ORANGE STREET, SUITE 1410 NEMOURS BUILDING (Street) WILMINGTON DE 19801 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 05/15/2007	3. Issuer Name and Ticker or Trading Symbol PLURISTEM LIFE SYSTEMS INC [ PLRS.OB ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, par value $0.00001 per share	100,000,000	D(1)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Warrants (right to buy)	(2)	05/14/2012	Common Stock	100,000,000	$0.025	D(1)

1. Name and Address of Reporting Person* Wood River Trust (Last) (First) (Middle) 1007 ORANGE STREET, SUITE 1410 NEMOURS BUILDING (Street) WILMINGTON DE 19801 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Doyle Michael C. (Last) (First) (Middle) 1007 ORANGE STREET, SUITE 1410 NEMOURS BUILDING (Street) WILMINGTON DE 19801 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. These securities are owned directly by Wood River Trust. Michael C. Doyle is the sole Trustee of Wood River Trust and, in such capacity, may be deemed indirectly to beneficially own the securities owned by the Wood River Trust.

2. These Warrants provide that, with certain limited exceptions, they are not exercisable if such exercise would result in the holder beneficially owning in excess of 4.99% of the outstanding shares of common stock of the issuer on such date. As a result of such restrictions and the other securities which the reporting person may be deemed beneficially to own, as of May 15, 2007 such Warrants were not exercisable.

	Wood River Trust By: /s/ Michael C. Doyle, Trustee	08/03/2007
	/s/ Michael C. Doyle	08/03/2007
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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