SEC FORM 4

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

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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^*

MESZNER ELTRICH A SUZANNE

(Last)

(First)

(Middle)

85 SWANSON ROAD

(Street)

BOXBOROUGH

01719

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
CYTYC CORP [ CYTC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Senior Vice President, General

3. Date of Earliest Transaction (Month/Day/Year)
10/15/2004

4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock⁽¹⁾	10/15/2004		M		3,900	A	$11.2917	45,177	D
Common Stock⁽²⁾	10/15/2004		S		3,900	D	$26.6974	41,277	D
Common Stock⁽¹⁾	10/15/2004		M		1,500	A	$15.4583	42,777	D
Common Stock⁽²⁾	10/15/2004		S		1,500	D	$26.6974	41,277	D

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Non-Qualified Stock Option (right to buy)⁽¹⁾	$11.2917	10/15/2004		M			3,900	02/09/2002⁽⁴⁾	02/09/2010	Common Stock	3,900	⁽³⁾	5,081	D
Non-Qualified Stock Option (right to buy)⁽¹⁾	$15.4583	10/15/2004		M			1,500	04/23/2001⁽⁵⁾	10/23/2010	Common Stock	1,500	⁽³⁾	4,785	D

Explanation of Responses:

1. The stock options were acquired pursuant to Issuer's 1995 Stock Plan in transactions exempt from Section 16 under Rule 16b-3.

2. The sale reported on this Form 4 was made pursuant to a written trading plan adopted in accordance with SEC Rule 10b5-1 on June 15, 2004.

3. Price not applicable to this transaction.

4. The option grant dated 02/09/2000 involved 30,900shares and was exercisable as to 6,438 shares on 12/09/2000; exercisable as to 7,725 shares on 12/09/2001; exercisable as to 7,725 shares on 12/09/2002; exercisable as to 7,725 shares on 12/09/2003 and exercisable as to 1,287 on 02/09/2004.

5. The option grant dated 10/23/2000 involved 45,000 shares and was exercisable as to 1,875 shares on 12/23/2000; excercisable as to 11,250 shares on 12/23/01; exercisable as to 11,250 shares on 12/23/2002; exercisable as to 11,250 shares on 12/23/2003 and exercisable as to 9,375 shares on 10/23/2004.

	By: Phyllis C. Howard, Attorney-in-Fact For: A. Suzanne Meszner-Etrich	10/15/2004
	** 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).
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