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Oriental Financial Group Inc.

(Name of Issuer)

Common Stock, $1.00 par value

(Title of Class of Securities)

68618W100

(CUSIP Number)

August 19, 2011

(Date of Event Which Requires Filing of this Statement)

CUSIP No		68618W100
1.	NAME OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Castine Capital Management, LLC
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)			(a)  [_]
				(b)  [X]
3.	SEC USE ONLY
4.	CITIZENSHIP OR PLACE OF ORGANIZATION
	Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5.	SOLE VOTING POWER
	0
6.	SHARED VOTING POWER
	2,402,161
7.	SOLE DISPOSITIVE POWER
	0
8.	SHARED DISPOSITIVE POWER
	2,402,161
9.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	2,402,161
10.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)			[_]
11.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
	5.46%
12.	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	OO, IA

 

CUSIP No		68618W100
1.	NAME OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Paul Magidson
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)			(a)  [_]
				(b)  [X]
3.	SEC USE ONLY
4.	CITIZENSHIP OR PLACE OF ORGANIZATION
	United States of America
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5.	SOLE VOTING POWER
	0
6.	SHARED VOTING POWER
	2,402,161
7.	SOLE DISPOSITIVE POWER
	0
8.	SHARED DISPOSITIVE POWER
	2,402,161
9.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	2,402,161
10.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)			[_]
11.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
	5.46%
12.	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	IN

 

Item 1.	(a).	Name of Issuer:
		Oriental Financial Group Inc.

	(b).	Address of issuer's principal executive offices:
		997 San Roberto Street Oriental Center 10th Floor Professional Offices Park San Juan, Puerto Rico 00926

Item 2.	(a).	Name of person filing:
		Castine Capital Management, LLC Paul Magidson

	(b).	Address or principal business office or, if none, residence:
		Castine Capital Management, LLC One International Place, Suite 2401 Boston, MA  02110 United States of America   Paul Magidson c/o Castine Capital Management, LLC One International Place, Suite 2401 Boston, MA  02110 United States of America

	(c).	Citizenship:
		Castine Capital Management, LLC – Delaware Paul Magidson – United States of America

	(d).	Title of class of securities:
		Common Stock, $1.00 par value

	(e).	CUSIP No.:
		68618W100

 

Item 3.

If This Statement is filed pursuant to §§.240.13d-1(b) or 240.13d-2(b), or (c), check whether the person filing is a

(a)

[_]

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b)

[_]

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c)

[_]

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d)

[_]

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e)

[_]

An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f)

[_]

An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g)

[_]

A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);

(h)

[_]

A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C.1813);

(i)

[_]

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

[_]

A non-U.S. institution in accordance with §240.13d-1(b)(1)(ii)(J);

	(k)		[_]	Group, in accordance with §240.13d-1(b)(1)(ii)(K).  If filing as a non-U.S. institution in accordance with §240.13d-1(b)(1)(ii)(J), please specify the type of institution:

Item 4.	Ownership.

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

	(a)	Amount beneficially owned:
		Castine Capital Management, LLC: 2,402,161 Paul Magidson: 2,402,161

	(b)	Percent of class:
		Castine Capital Management, LLC: 5.46% Paul Magidson: 5.46%

	(c)	Number of shares as to which Castine Capital Management, LLC has:

		(i)	Sole power to vote or to direct the vote	0	,
		(ii)	Shared power to vote or to direct the vote	2,402,161	,
		(iii)	Sole power to dispose or to direct the disposition of	0	,
		(iv)	Shared power to dispose or to direct the disposition of	2,402,161	.

		Number of shares as to which Paul Magidson has:

		(i)	Sole power to vote or to direct the vote	0	,
		(ii)	Shared power to vote or to direct the vote	2,402,161	,
		(iii)	Sole power to dispose or to direct the disposition of	0	,
		(iv)	Shared power to dispose or to direct the disposition of	2,402,161	.

Item 5.

Ownership of Five Percent or Less of a Class.

	If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [_].
	N/A

 

 

Item 6.

Ownership of More Than Five Percent on Behalf of Another Person.

	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified.  A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
	N/A

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.

	If a parent holding company or control person has filed this schedule, pursuant to Rule 13d-1(b)(1)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary.  If a parent holding company or control person has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
	N/A

 

 

Item 8.

Identification and Classification of Members of the Group.

	If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group.  If a group has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identity of each member of the group.
	N/A

Item 9.

Notice of Dissolution of Group.

	Notice of dissolution of a group may be furnished as an exhibit stating the date of the dissolution and that all further filings with respect to transactions in the security reported on will be filed, if required, by members of the group, in their individual capacity.  See Item 5.
	N/A

Item 10.

Certification.

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

	August 25, 2011
	(Date)
	Castine Capital Management, LLC**
	/s/ Paul Magidson
	(Signature)
	Paul Magidson, Managing Member
	(Name/Title)
	/s/ Paul Magidson
	(Signature)
	Paul Magidson**
	(Name/Title)

Dated:  August 25, 2011	Castine Capital Management, LLC
	By: /s/ Paul Magidson
	Name: Paul Magidson
	Title:   Managing Member
Dated:  August 25, 2011	/s/ Paul Magidson
	Paul Magidson