UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D/A

Under the Securities Exchange Act of 1934

(Amendment No. 4)*

Osteologix, Inc.

(Name of Issuer)

Common Stock, par value $0.0001 per share

(Title of Class of Securities)

68858P104

(CUSIP Number)

James E. Dawson, Esq., Nutter, McClennen & Fish LLP

155 Seaport Blvd, Boston, MA 02210

(Name, Address and Telephone Number of Person Authorized to Receive Notices and

Communications)

June 9, 2010

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box . o

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for other parties to whom copies are to be sent.

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. 68858P104

SCHEDULE 13D/A

Page 2 of 11


1	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only).

	Nordic Biotech General Partner ApS


2	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a) o
	(b) o

3	SEC Use Only



4	Source of Funds (See Instructions)

	OO

5	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)

	o

6	Citizenship or Place of Organization

	Denmark

		7	Sole Voting Power

Number of			0

Shares		8	Shared Voting Power
Beneficially
Owned by			21,650,325

Each		9	Sole Dispositive Power
Reporting
Person			0

With		10	Shared Dispositive Power

			21,650,325

11	Aggregate Amount Beneficially Owned by Each Reporting Person

	21,650,325

12	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)

	o

13	Percent of Class Represented by Amount in Row (11)

	65.7%

14	Type of Reporting Person (See Instructions)

	PN

CUSIP No. 68858P104

SCHEDULE 13D/A

Page 3 of 11


1	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only).

	Nordic Biotech K/S


2	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a) o
	(b) o

3	SEC Use Only



4	Source of Funds (See Instructions)

	OO

5	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)

	o

6	Citizenship or Place of Organization

	Denmark

		7	Sole Voting Power

Number of			15,133,061

Shares		8	Shared Voting Power
Beneficially
Owned by			0

Each		9	Sole Dispositive Power
Reporting
Person			15,133,061

With		10	Shared Dispositive Power

			0

11	Aggregate Amount Beneficially Owned by Each Reporting Person

	15,133,061

12	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)

	o

13	Percent of Class Represented by Amount in Row (11)

	45.9%

14	Type of Reporting Person (See Instructions)

	PN

CUSIP No. 68858P104

SCHEDULE 13D/A

Page 4 of 11


1	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only).

	Nordic Biotech Opportunity Fund K/S


2	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a) o
	(b) o

3	SEC Use Only



4	Source of Funds (See Instructions)

	OO

5	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)

	o

6	Citizenship or Place of Organization

	Denmark

		7	Sole Voting Power

Number of			6,517,264

Shares		8	Shared Voting Power
Beneficially
Owned by			0

Each		9	Sole Dispositive Power
Reporting
Person			6,517,264

With		10	Shared Dispositive Power

			0

11	Aggregate Amount Beneficially Owned by Each Reporting Person

	6,517,264

12	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)

	o

13	Percent of Class Represented by Amount in Row (11)

	19.8%

14	Type of Reporting Person (See Instructions)

	PN

CUSIP No. 68858P104

SCHEDULE 13D/A

Page 5 of 11


1	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only).

	Christian Hansen


2	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a) o
	(b) o

3	SEC Use Only



4	Source of Funds (See Instructions)

	OO

5	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)

	o

6	Citizenship or Place of Organization

	Denmark

		7	Sole Voting Power

Number of			88,900

Shares		8	Shared Voting Power
Beneficially
Owned by			21,650,325

Each		9	Sole Dispositive Power
Reporting
Person			88,900

With		10	Shared Dispositive Power

			21,650,325

11	Aggregate Amount Beneficially Owned by Each Reporting Person

	21,739,225

12	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)

	o

13	Percent of Class Represented by Amount in Row (11)

	65.9%

14	Type of Reporting Person (See Instructions)

	IN

CUSIP No. 68858P104

SCHEDULE 13D/A

Page 6 of 11


1	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only).

	Florian Schönharting


2	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a) o
	(b) o

3	SEC Use Only



4	Source of Funds (See Instructions)

	OO

5	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)

	o

6	Citizenship or Place of Organization

	Denmark

		7	Sole Voting Power

Number of			20,000

Shares		8	Shared Voting Power
Beneficially
Owned by			21,650,325

Each		9	Sole Dispositive Power
Reporting
Person			20,000

With		10	Shared Dispositive Power

			21,650,325

11	Aggregate Amount Beneficially Owned by Each Reporting Person

	21,670,325

12	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)

	o

13	Percent of Class Represented by Amount in Row (11)

	65.7%

14	Type of Reporting Person (See Instructions)

	IN

This Amendment No. 4 amends and supplements, as set forth below, the information contained in Items 3, 4, 5(a) and (b), 6 and 7 of the Schedule 13D that was originally filed with the Securities and Exchange Commission (the “SEC”) by Nordic Biotech K/S on May 25, 2006, as amended by Amendment No. 1 filed with the SEC on June 11, 2007, further amended by Amendment No. 2 filed with the SEC by Nordic Biotech General Partner ApS, Nordic Biotech K/S, Nordic Biotech Opportunity Fund K/S, Christian Hansen and Florian Schönharting (the “Reporting Persons”) on May 28, 2008, and further amended by Amendment No. 3 filed with the SEC by the Reporting Persons on January 5, 2010 (the “Schedule 13D”). Capitalized terms used but not otherwise defined in this Amendment No. 4 are used with the meanings ascribed to them in the Schedule 13D. Except as amended by this Amendment No. 4, all information contained in the Schedule 13D is, after reasonable inquiry and to the best of the Reporting Persons’ knowledge and belief, true, complete and correct as of the date of this Amendment No. 4.

Item 3. Source and Amount of Funds or Other Consideration.

Item 3 of the Schedule 13D is amended and supplemented with the following:

The purchase of the shares of Common Stock described in Item 4 below will be funded by Nordic Biotech Opportunity Fund K/S out of its available funds.

Item 4. Purpose of Transaction.

Item 4 of the Schedule 13D is amended and supplemented with the following:

On June 9, 2010, Nordic Biotech Opportunity Fund K/S entered into a securities purchase agreement (the “Purchase Agreement”) with the Company for the sale (the “Offering”) of 1,494,532 shares of Common Stock (the “Shares”) for an aggregate purchase price of $750,000, or approximately $0.5018 per share, the 10 day volume weighted average closing price of the Common Stock as of the end of trading on June 8, 2010. The Offering was completed on June 11, 2010.

In connection with the Offering, the Company entered into a registration rights agreement dated as of June 9, 2010 with Nordic Biotech Opportunity Fund K/S (the “Registration Rights Agreement”). Pursuant to the Registration Rights Agreement, Nordic Biotech Opportunity Fund K/S has the right at any time after six months following the closing date of the Offering to cause the Company prepare and file a registration statement covering the resale of the shares of common stock purchased by Nordic Biotech Opportunity Fund K/S, subject to certain limitations. The Company also agreed, among other things, to indemnify Nordic Biotech Opportunity Fund K/S under the registration statements from certain liabilities and to pay all fees and expenses (excluding underwriting discounts and selling commissions and all legal fees of Nordic Biotech Opportunity Fund K/S) incident to the Company’s obligations under the Registration Rights Agreement.

The terms and conditions of the Offering were approved by a special committee comprised of three independent directors which was formed by the Board in connection with the Offering.

The foregoing description of the Offering is only a summary and is qualified in its entirety by reference to the Purchase Agreement and the Registration Rights Agreement, copies of which are filed as exhibits to this Amendment No. 4.

Item 5. Interest in Securities of the Issuer.

Presuming the issuance of the Shares and the closing of the Offering in accordance with its terms, Items 5(a) and (b) of the Schedule 13D are amended and restated with the following:

(a)

(i)

Nordic Biotech General Partner ApS is the beneficial owner of an aggregate of 21,650,325(1) shares of Common Stock, representing approximately 65.7%(2) of the total issued and outstanding shares of Common Stock.

(ii)

Nordic Biotech K/S is the beneficial owner of an aggregate of 15,133,061(3) shares of Common Stock, representing approximately 45.9%(2) of the total issued and outstanding shares of Common Stock.

(iii)

Nordic Biotech Opportunity Fund K/S is the beneficial owner of an aggregate of 6,517,264(4) shares of Common Stock, representing approximately 19.8%(2) of the total issued and outstanding shares of Common Stock.

(iv)

Christian Hansen is the beneficial owner of an aggregate of 21,739,225(5) shares of Common Stock, representing approximately 65.9%(2) of the total issued and outstanding shares of Common Stock.

(v)

Florian Schönharting is the beneficial owner of an aggregate of 21,670,325(6) shares of Common Stock, representing approximately 65.7%(2) of the total issued and outstanding shares of Common Stock.

(b)

(i)

Nordic Biotech General Partner ApS has the shared power to vote or direct the vote, and shared power to dispose or direct the disposition of 21,650,325 (1) shares of Common Stock beneficially owned by it indirectly.

(ii)

Nordic Biotech K/S has the sole power to vote or to direct the vote, and sole power to dispose or direct the disposition of 15,133,061(3) shares of Common Stock beneficially owned by it.

(iii)

Nordic Biotech Opportunity Fund K/S has the sole power to vote or to direct the vote, and sole power to dispose or direct the disposition of 6,517,264 (4) shares of Common Stock beneficially owned by it.

(iv)

Christian Hansen has the sole power to vote or to direct the vote, and sole power to dispose or direct the disposition of 88,900 shares of Common Stock beneficially owned by CKH Invest ApS. Mr. Hansen has the shared power to vote or direct the vote, and the shared power to dispose or direct the disposition of 21,739,225 (5) shares of Common Stock beneficially owned by him indirectly.

(v)

Florian Schönharting has the sole power to vote or to direct the vote, and sole power to dispose or direct the disposition of 20,000 shares of Common Stock beneficially owned by him. Mr. Schönharting has the shared power to vote or to direct the vote, and the shared power to dispose or direct the disposition of 21,650,325 (6) shares of Common Stock beneficially owned by him indirectly.

_____________

(1)

Nordic Biotech General Partner ApS is the managing partner of Nordic Biotech K/S and Nordic Biotech Opportunity Fund K/S (collectively, the “Funds”). By reason of the provisions of Rule 16a-1 under the Securities Exchange Act of 1934, as amended (the “Act”), Nordic Biotech ApS may be deemed to be the beneficial owner of the securities held by the Funds. Consequently, the number of shares reported herein consists of 15,133,061 shares of Common Stock beneficially owned by Nordic Biotech K/S and 6,517,264 shares of Common Stock beneficially owned by Nordic Biotech Opportunity Fund K/S. Nordic Biotech ApS hereby disclaims any beneficial ownership of all such securities for purposes of Section 16 of the Act, except to the extent of its indirect pecuniary interest therein.

(2)	Based on 31,476,339 shares of Common Stock outstanding as of May 17, 2010, plus 1,494,532 shares of Common Stock to be issued upon the closing of the Offering.

(3)	Consists of 15,133,061 shares of Common Stock owned by Nordic Biotech K/S.

(4)	Consists of 6,517,264 shares of Common Stock owned by Nordic Biotech Opportunity Fund K/S.

(5)

Mr. Hansen is a principal of the Funds and of Nordic Biotech General Partner ApS. Consequently, the number of shares reported herein consists of 15,133,061 shares of Common Stock beneficially owned by Nordic Biotech K/S and 6,517,264 shares of Common Stock beneficially owned by Nordic Biotech Opportunity Fund K/S. Mr. Hansen disclaims beneficial ownership of the securities held by the Funds, except to the extent of his pecuniary interest therein. Mr. Hansen is the sole owner of CKH Invest ApS, the record holder of 88,900 shares of Common Stock.

(6)

Mr. Schönharting is a principal of the Funds and of Nordic Biotech General Partner ApS. Consequently, the number of shares reported herein consists of 20,000 shares of Common Stock owned directly by Mr. Schönharting, 15,133,061 shares of Common Stock beneficially owned by Nordic Biotech K/S and 6,517,264 shares of Common Stock beneficially owned by Nordic Biotech Opportunity Fund K/S. Mr. Schönharting disclaims beneficial ownership of the securities held by the Funds, except to the extent of his pecuniary interest therein.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer.

Item 6 of the Schedule 13D is amended and supplemented with the information contained in Item 4.

Item 7. Material to be Filed as Exhibits.

Item 7 of the Schedule 13D is amended and supplemented with the following, filed herewith:

1		Securities Purchase Agreement dated June 9, 2010 is incorporated by reference to Exhibit 10.1 of the Company’s Current Report on Form 8-K filed on June 11, 2010.
2		Registration Rights Agreement dated June 9, 2010 is incorporated by reference to Exhibit 10.2 of the Company’s Current Report on Form 8-K filed on June 11, 2010.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete, and correct.

Dated: June 11, 2010

	NORDIC BIOTECH GENERAL PARTNER ApS

		By: /s/ Christian Hansen*
		Name: Christian Hansen
		Title: Principal

		By: /s/ Florian Schönharting*
		Name: Florian Schönharting
		Title: Principal


	NORDIC BIOTECH K/S

		By: /s/ Christian Hansen*
		Name: Christian Hansen
		Title: Principal

		By: /s/ Florian Schönharting*
		Name: Florian Schönharting
		Title: Principal

	NORDIC BIOTECH OPPORTUNITY FUND K/S

		By: /s/ Christian Hansen*
		Name: Christian Hansen
		Title: Principal

		By: /s/ Florian Schönharting*
		Name: Florian Schönharting
		Title: Principal

	/s/ Christian Hansen*
	Christian Hansen

	/s/ Florian Schönharting*
	Florian Schönharting

	*By: /s/ James E. Dawson
	James E. Dawson, as attorney-in-fact

Osteologix, Inc. SC 13D/A