UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported): ~~October~~July 112, ~~2010~~2011 (~~September~~July 3012, ~~2010~~ 2011)

GLENROSE INSTRUMENTS INC.

(Exact Name of Registrant as Specified in Its Charter)

Delaware

(State or Other Jurisdiction of Incorporation)

000-51645	20-3521719
000-51645 (Commission File Number)	20-3521719 (IRS Employer Identification No.)
(Commission File Number)	(IRS Employer Identification No.)
45 First Avenue, Waltham Massachussetts (Address of Principal Executive Offices)	02451 (Zip Code)
45 First Avenue, Waltham
Massachussetts	02451
(Address of Principal Executive Offices)	(Zip Code)

(781) 622-1120

(Registrant’s Telephone Number, Including Area Code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

£ o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

£ o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

£ o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

£ o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officer

~~On September 30, 2010, Theo Melas-Kyriazi resigned from his position as member of the Board of Directors of GlenRose Instruments Inc.~~ (~~or the Registrant~~b)~~, effective~~ Resignation ~~immediately.~~or Atremoval ~~the time~~ of ~~his~~directors ~~resignation,~~other ~~Mr.~~than ~~Melas-Kyriazi was serving~~ as ~~the~~a ~~Chairman~~result of ~~the~~disagreement ~~Compensation~~or ~~Committee. As~~removal ~~expressed in~~for ~~the letter to the Registrant in which he tendered his resignation, Mr~~cause. Melas-Kyriazi resigned in order to pursue other opportunities. There are no disagreements between Mr. Melas-Kyriazi and the Registrant regarding any matter related to the Registrant’s operations, policies or practices.

AOn ~~copy~~July 12, 2011, John H. Park resigned from his position as member of the ~~resignation~~Board ~~letter~~of Directors of MrGlenRose Instruments Inc. ~~Kyriazi~~ is(or ~~attached~~the asRegistrant), ~~Exhibit~~effective 17immediately.1 Mr. Park resigned to ~~this Current~~pursue ~~Report~~other onopportunities ~~Form~~and ~~8-K. The~~the Registrant’s ~~Board~~believes ofthere ~~Directors appointed~~are ~~Dr.~~no ~~William~~disagreements ~~Zolner~~between asMr. ~~Chairman~~Park ofand the ~~Compensation~~Registrant ~~Committee~~related to ~~fill~~ the ~~vacancy~~Registrant’s ~~created~~operations, bypolicies ~~Mr.~~or ~~Melas-Kyriazi’s~~procedures that caused the resignation.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

The Registrant hereby files the following exhibit:

Exhibit 17.1 – Letter from Theo Melas-Kyriazi, dated September 30, 2010.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Date: ~~October~~July 112, ~~2010~~2011 GLENROSE INSTRUMENTS INC. By: /s/ Anthony S. Loumidis _____________________________________ Anthony S. Loumidis, Chief Financial Officer

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