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

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(Print or Type Responses)

1. Name and Address of Reporting Person * PETERSON JEFFREY N   2. Issuer Name and Ticker or Trading Symbol PRESSURE BIOSCIENCES INC [PBIO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 1031 SHORELINE DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 07/06/2012 (Street) SAN MATEO, CA US 94404 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

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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

Series G Convertible Preferred Stock

$ 0.5

07/06/2012

P

4,400

07/06/2012(1)

07/06/2013

Common Stock

44,000

(2)

4,400

D (1)

Series G Common Stock Purchase Warrant

$ 0.5

07/06/2012

P

22,000

07/06/2012(3)

07/06/2015

Common Stock

22,000

(2)

22,000

D (3)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
PETERSON JEFFREY N 1031 SHORELINE DRIVE SAN MATEO, CA US 94404	X

Signatures

Richard T Schumacher, Attorney in fact		07/10/2012
**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)	The terms of the Series G Convertible Preferred Stock contain a limitation on conversion which prevents the Reporting Person from converting shares of Series G Convertible Preferred Stock into Shares of Common Stock if, after giving effect to the conversion, the Reporting Person would beneficially own more than 4.99% of the outstanding shares of Common Stock. The Reporting Person may elect to increase this limitation to 9.99%, 14.99% or 19.99%, upon not less than 61 days prior written notice to the Company. Since the Reporting Person currently beneficially owns less than 4.99% of the outstanding shares of Common Stock, the conversion limitation that applies to the Reporting Person is the 4.99% limitation. The Reporting Person disclaims beneficial ownership of such securities except to the extent of the Reporting Person's pecuniary interest in such securities.
(2)	Pursuant to a certain Securities Purchase Agreement, dated July 6, 2012, among the Company, the Reporting Person and the other purchasers named therein, the Reporting Person purchased 4,400 "Units" at a purchase price of $5.00 per Unit. Each Unit consisted of (i) one share of Series G Convertible Preferred Stock, convertible into 10 shares of the Company's Common Stock and (ii) a warrant to purchase 5 shares of Common Stock, which warrant is exercisable until July 6, 2015.
(3)	The Series G Common Stock Purchase Warrants contain a limitation on exercise which prevents the Reporting Person from exercising any Warrants if, after giving effect to the exercise, the Reporting Person would beneficially own more than 4.99% of the outstanding shares of Common Stock. The Reporting Person may elect to increase this limitation to 9.99%, 14.99% or 19.99%, upon not less than 61 days prior written notice to the Company. Since the Reporting Person currently beneficially owns less than 4.99% of the outstanding shares of Common Stock, the conversion limitation that applies to the Reporting Person is the 4.99% limitation. The Reporting Person disclaims beneficial ownership of such securities except to the extent of the Reporting Person's pecuniary interest in such securities.

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