SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* WIGLEY MICHAEL (Last) (First) (Middle) C/O SONTRA MEDICAL CORPORATION 10 FORGE PARKWAY (Street) FRANKLIN MA 02038 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol SONTRA MEDICAL CORP [ SONT ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 05/20/2004
	4. If Amendment, Date of Original Filed (Month/Day/Year) 05/24/2004	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/20/2004		C		94,300(1)	A	$0	94,300	I	by TerraDek Ligthing, Inc.(2)
Common Stock	05/20/2004		C		20,956(3)	A	$0	20,956	I	by Great Plains Properties, Inc.(4)
Common Stock	05/20/2004		C		36,672(5)	A	$0	36,672	I	by Great Plains Companies, Inc.(6)
Common Stock	05/20/2004		C		15,717(7)	A	$0	55,517(8)	I	As custodian for Alexandra L. Wigley (daughter)
Common Stock	05/20/2004		C		26,195(9)	A	$0	52,695(8)	I	As custodian for Elizabeth A. wigley (daughter)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Series A Preferred Stock	$1	02/27/2004		G	V	35,000		10/14/2003	(10)	Common Stock	35,000	$0	35,000	I	by Great Plains Companies, Inc.(11)
Warrants to purchase Common Stock	$1.5	02/27/2004		G	V	35,000		10/14/2003	10/14/2008	Common Stock	35,000	$0	35,000	I	by Great Plains Companies, Inc.(11)
Series A Preferred Stock	$1	05/20/2004		C			90,000	10/14/2003	(10)	Common Stock	94,300(1)	$0	0	I	by TerraDek Lighting, Inc.(2)
Series A Preferred Stock	$1	05/20/2004		C			20,000(3)	10/14/2003	(10)	Common Stock	20,956(3)	$0	0	I	by Great Plains Properties, Inc.(4)
Series A Preferred Stock	$1	05/20/2004		C			35,000	10/14/2003	(10)	Common Stock	36,672(5)	$0	0	I	by Great Plains Companies, Inc.(6)

Explanation of Responses:

1. 90,000 shares of Series A Preferred Stock of the issuer and the accrued dividends thereon were converted into an aggregate of 94,300 shares of Common Stock. The Series A Preferred Stock was convertible into Common Stock on a 1-for-1 basis. The Reporting Person's initial Form 4 reporting this transaction incorrectly reported the number of shares of Common Stock received upon conversion.

2. The Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or any other purpose. The Reporting Person is the Chairman of the Board of TerraDek Lighting, Inc. The Reporting Person and his spouse are the majority shareholders of TerraDek Lighting, Inc.

3. 20,000 shares of Series A Preferred Stock of the issuer and the accrued dividends thereon were converted into an aggregate of 20,956 shares of Common Stock. The Series A Preferred Stock was convertible into Common Stock on a 1-for-1 basis. The Reporting Person's initial Form 4 reporting this transaction incorrectly reported the number of Series A Preferred Stock converted.

4. The Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The Reporting Person is the Chairman of the Board, President and Chief Executive Officer of Great Plains Properties, Inc.

5. 35,000 shares of Series A Preferred Stock of the issuer and the accrued dividends thereon were converted into an aggregate of 36,672 shares of Common Stock. The Series A Preferred Stock was convertible into Common Stock on a 1-for-1 basis. The Reporting Person's initial Form 4 inadvertently omitted this transaction.

6. The Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.

7. 15,000 shares of Series A Preferred Stock of the issuer and the accrued dividends thereon were converted into an aggregate of 15,717 shares of Common Stock. The Series A Preferred Stock was convertible into Common Stock on a 1-for-1 basis.

8. The Reporting Person's initial Form 4 reporting this transaction incorrectly reported the number of shares of Common Stock beneficially owned following the reported transaction.

9. 25,000 shares of Series A Preferred Stock of the issuer and the accrued dividends thereon were converted into an aggregate of 26,195 shares of Common Stock. The Series A Preferred Stock was convertible into Common Stock on a 1-for-1 basis.

10. There is no expiration date.

11. The Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The Reporting Person's initial Form 4 inadvertently attributed ownership to Great Plains Properties, Inc.

	/s/ Michael Wigley	06/01/2004
	** 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 4 (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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.