Filing Details

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

o

Rule 13d-1(b)

x

Rule 13d-1(c)

o

Rule 13d-1(d)

CUSIP No. 03674U300

13G

Page 1 of 4 Pages

1.

Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (Entities Only)
Zenyaku Kogyo Co., Ltd.
98-0336168

2.

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

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Japan

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
368,351

6.

Shared Voting Power
0

7.

Sole Dispositive Power
368,351

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
368,351

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
3.66%*

12.

Type of Reporting Person (See Instructions)
CO

* This percentage is calculated based upon 10,076,164 shares of the Issuers common stock outstanding, as set forth in the Issuers Form 10-Q for the quarter ended March 31, 2017, filed with the Securities and Exchange Commission on May 10, 2017.

CUSIP No. 03674U300

13G

Page 2 of 4 Pages

Item 1.

(a)

Name of Issuer
Anthera Pharmaceuticals, Inc.

Item 2.

(a)

Name of Person Filing
Zenyaku Kogyo Co., Ltd.

(b)

Address of the Principal Office or, if none, Residence
6-15, Otsuka 5-chome, Bunkyo-ku, Tokyo, Japan 112-8650

(c)

Citizenship
Japan

(d)

Title of Class of Securities
Common Stock, par value $0.001 per share

(e)

CUSIP No.
03674U300

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)

o

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

(b)

o

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

(c)

o

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

(d)

o

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

(e)

o

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

(f)

o

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

(g)

o

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

(h)

o

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

(i)

o

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)

o

Group, in accordance with §240.13d-1(b)(1)(ii)(J).

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:   

368,351

(b)

Percent of class:   

3.66%*

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote   

368,351

(ii)

Shared power to vote or to direct the vote    

0

(iii)

Sole power to dispose or to direct the disposition of   

368,351

(iv)

Shared power to dispose or to direct the disposition of   

0

* This percentage is calculated based upon 10,076,164 shares of the Issuers common stock outstanding, as set forth in the Issuers Form 10-Q for the quarter ended March 31, 2017, filed with the Securities and Exchange Commission on May 10, 2017.

Instruction. For computations regarding securities which represent a right to acquire an underlying security see §240.13d-3(d)(1).

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   x.

Instruction. Dissolution of a group requires a response to this item.

Item 6.

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

N/A

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company.

N/A

Item 8.

Identification and Classification of Members of the Group.

N/A

Item 9.

Notice of Dissolution of Group.

N/A

CUSIP No. 03674U300

13G

Page 4 of 4 Pages

Item 10.

Certification.

(b)         The following certification shall be included if the statement is filed pursuant to §240.13d-1(c):

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.

June 29, 2017

Date

ZENYAKU KOGYO CO., LTD.

By:

/s/ Koichi Hashimoto

Signature

Koichi Hashimoto, President and Chief Executive Officer

Name/Title