UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO. )*
ADHEREX TECHNOLOGIES INC.
(Name of Issuer)
Common Shares
(Title of Class of Securities)
| 00686 R (CUSIP Number) |
April 29, 2005
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
¨ Rule 13d-1(b)
x Rule 13d-1(c)
¨ Rule 13d-1(d)
| * | The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. |
The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).
CUSIP NUMBER 00686 R
Page 2 of 5
| 1. | Name of Reporting Person I.R.S. Identification No. of Above Person (entities only)
William P. Peters |
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| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)
(a) ¨ (b) ¨
Not Applicable |
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| 3. | SEC Use Only
|
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| 4. | Citizenship or Place of Organization
United States |
| Number of Shares Beneficially Owned By Each Reporting Person With |
5. Sole Voting Power
10,932,432 6. Shared Voting Power
0 7. Sole Dispositive Power
10,932,432 8. Shared Dispositive Power
0 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person
10,932,432 |
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| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)
Not Applicable |
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| 11. | Percent of Class Represented by Amount in Row (9)
5.98% |
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| 12. | Type of Reporting Person (See Instructions)
IN |
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CUSIP NUMBER 00686 R
Page 3 of 5
| Item 1 |
(a) |
Name of Issuer | ||||||||||
| Adherex Technologies Inc. | ||||||||||||
| Item 1 |
(b) |
Address of Issuer’s Principal Executive Offices | ||||||||||
| 2300 Englert Drive, Suite G, Research Triangle Park, North Carolina 27713 | ||||||||||||
| Item 2 |
(a) |
Name of Person Filing | ||||||||||
| William P. Peters | ||||||||||||
| Item 2 |
(b) |
Address of Principal Business Office, or, if None, Residence | ||||||||||
| 2300 Englert Drive, Suite G, Research Triangle Park, North Carolina 27713 | ||||||||||||
| Item 2 |
(c) |
Citizenship | ||||||||||
| United States | ||||||||||||
| Item 2 |
(d) |
Title of Class of Securities | ||||||||||
| Common Stock | ||||||||||||
| Item 2 |
(e) |
CUSIP Number | ||||||||||
| 00686 R | ||||||||||||
| Item 3. |
Filing Pursuant to Rules 13d-1(b) or 13d-2(b) | |||||||||||
| Not Applicable | ||||||||||||
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CUSIP NUMBER 00686 R
Page 4 of 5
| Item 4. |
Ownership | |||||||||
| (a) | On April 29, 2005, Adherex’s shareholders approved, among other amendments, an increase in the maximum number of shares of common stock issuable under the Issuer’s stock option plan which was a condition precedent to a grant of fully vested options to Dr. Peters. As a result, he beneficially owns an aggregate of 10,932,432 shares of Issuer’s common stock, all of which underlie options to purchase the Issuer’s common stock that were exercisable within 60 days of April 29, 2005. | |||||||||
| (b) | Percent of Class: 5.98% | |||||||||
| (c) | See Rows (5)-(8) on page 2. | |||||||||
| Item 5. |
Ownership of Five Percent or Less of a Class | |||||||||
| Not Applicable | ||||||||||
| Item 6. |
Ownership of More than Five Percent on Behalf of Another Person | |||||||||
| Not Applicable | ||||||||||
| Item 7. |
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company | |||||||||
| Not Applicable | ||||||||||
| Item 8. |
Identification and Classification of Members of the Group | |||||||||
| Not Applicable | ||||||||||
| Item 9. |
Notice of Dissolution of Group | |||||||||
| Not Applicable | ||||||||||
| Item 10. |
Certification | |||||||||
| By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. | ||||||||||
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CUSIP NUMBER 00686 R
Page 5 of 5
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
July 11, 2005
Date
/s/ William P. Peters
William P. Peters
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