FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person * BALDINI LAWRENCE   2. Issuer Name and Ticker or Trading Symbol MERIDIAN BIOSCIENCE INC [VIVO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Exec VP, Operations & IS (Last) (First) (Middle) 3471 RIVER HILLS DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 07/26/2013 (Street) CINCINNATI, OH 45244 4. If Amendment, Date 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 (City) (State) (Zip) 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 07/26/2013   M   5,250 A $ 0 75,250 D   Common Stock 07/26/2013   M   10,500 A $ 0 85,750 D   Common Stock 07/26/2013   M   15,750 A $ 0 101,500 D   Common Stock 07/26/2013   M   500 A $ 0 102,000 D   Common Stock 07/26/2013   S   32,000 D $ 24.1367 (1) 70,000 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	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 control number.		SEC 1474 (9-02)

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 Underlying Securities (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 of Derivative Security: 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

Stock Options (Right to Buy)

$ 7.28

07/26/2013

M

5,250

(2)

12/07/2014

Common Stock

5,250

$ 0

0

D

Stock Options (Right to Buy)

$ 14.007

07/26/2013

M

10,500

(3)

11/10/2015

Common Stock

10,500

$ 0

0

D

Stock Options (Right to Buy)

$ 16.554

07/26/2013

M

15,750

(4)

11/15/2016

Common Stock

15,750

$ 0

0

D

Stock Options (Right to Buy)

$ 19.71

07/26/2013

M

500

(5)

08/04/2020

Common Stock

500

$ 0

500

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
BALDINI LAWRENCE 3471 RIVER HILLS DRIVE CINCINNATI, OH 45244			Exec VP, Operations & IS

Signatures

/s/ Melissa A. Lueke, attorney-in-fact for Lawrence J. Baldini		07/30/2013
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Prices range from $24.1044 per share to $24.2401 per share. The reporting person undertakes to provide full pricing information if requested by the Securities and Exchange Commission, the issuer or a security holder of the issuer.
(2)	These options became fully vested in November 2008.
(3)	These options became fully vested in November 2009.
(4)	These options became fully vested in November 2010.
(5)	The exercised options vested in August 2011 and Augutst 2012, with the remaining options held scheduled to vest in August 2013 and August 2014.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.