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~~report (Date of earliest event reported): ~~September 21,~~February ~~2010 (September 17~~4, ~~2010)~~ 2011

BlackRock Apex Municipal Fund, Inc.

(Exact ~~name~~Name of ~~registrant~~Registrant as ~~specified~~Specified in ~~its charter~~Charter)

MARYLAND	811-~~21286~~05227	3722-~~1461533~~2984252
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)
55 East 52nd Street New York, New York		10055
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (212) 810-5300

55 East 52nd Street, New York, New York		10055
(Address of Principal Executive Offices)		(Zip Code)

~~(Former~~ Registrant's ~~name~~telephone ~~or former address~~number, ifincluding ~~changed~~area ~~since last report~~code: (212) 810-5300

~~Check~~(Former ~~the~~Name ~~appropriate~~or ~~box~~Former ~~below~~Address, if ~~the~~Changed ~~Form~~Since ~~8-K~~Last ~~filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:~~ Report)

¨Check ~~Written~~the ~~communications~~appropriate ~~pursuant~~box below if the Form 8-K filing is intended to ~~Rule~~simultaneously ~~425~~satisfy the filing obligation of the registrant under any of the ~~Securities~~following ~~Act~~provisions (17see ~~CFR~~General ~~230~~Instruction A.~~425~~2. below):

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

¨Section ~~Pre-commencement~~7 ~~communications pursuant to Rule 14d~~-~~2(b)~~ ~~under~~Regulation ~~the Exchange Act (17 CFR 240.14d- 2(b))~~FD

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

Item 7.01 Regulation FD Disclosure.

On ~~September 17~~February 4, ~~2010~~2011, ~~the Board of Directors of~~ BlackRock Apex Municipal Fund, Inc. (the “"Fund”") ~~amended~~announced ~~and~~that ~~restated~~the ~~in its~~2011 ~~entirety~~Annual ~~the~~Meeting ~~bylaws~~ of ~~the~~Shareholders ~~Fund~~ (the ~~“Amended~~"Annual ~~and~~Meeting") ~~Restated~~has ~~Bylaws”).~~been ~~The~~scheduled ~~Amended~~for ~~and~~July ~~Restated~~28, ~~Bylaws~~2011. ~~were~~A ~~deemed~~copy ~~effective~~of ~~September 17,~~the ~~2010~~Fund's ~~and~~press ~~are~~release is attached hereto as Exhibit 399.1 and ~~are~~ incorporated herein by reference.

~~Item~~In 9accordance with Rule 14a-5(f) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Fund's Board of Directors has determined that proposals to be considered for inclusion in the Fund's proxy statement for the Annual Meeting pursuant to Rule 14a-8 under the Exchange Act must be received by the Fund at its principal executive offices on or before February 28, 2011.01 ~~Financial~~In ~~Statements~~addition, ~~and~~in ~~Exhibits~~order for stockholder nominations of directors or stockholder proposals made outside of Rule 14a-8 under the Exchange Act to be considered "timely" within the meaning of Rule 14a-4(c) of the Exchange Act, such nominations or proposals must be received by the Fund at its principal executive offices on or before February 14, 2011. Proposals should be directed to the attention of the Corporate Secretary, BlackRock Apex Municipal Fund, Inc., 55 East 52nd Street, New York, New York, 10055.

Section 9 – Financial Statements and Exhibits

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

3.1 Amended and Restated Bylaws of BlackRock Apex Municipal Fund, Inc.

Exhibit No.		Exhibit
99.1		BlackRock Apex Municipal Fund, Inc. press release, dated February 4, 2011.

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 hereunto duly authorized.

~~BlackRock~~Date: ~~Apex~~February ~~Municipal Fund~~4, ~~Inc. By: /S/ JANEY AHN Name: Janey Ahn Title: Assistant Secretary~~2011

~~DATE: September 21~~BlackRock Apex Municipal Fund, ~~2010~~Inc. By: / s/ Janey Ahn Name: Janey Ahn Title: Assistant Secretary

3Exhibit Index

EXHIBIT INDEX

Exhibit No.		Exhibit
99.1		BlackRock Apex Municipal Fund, Inc. press release, dated February 4, 2011.

ExhibitNo.		Description
3.1		Amended and Restated Bylaws of BlackRock Apex Municipal Fund, Inc.

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