Filing Details

Accession Number:
0001193125-17-355669
Form Type:
13D Filing
Publication Date:
2017-11-29 16:10:03
Filed By:
Polaris Venture Partners V, L.p.
Company:
X4 Pharmaceuticals Inc (NASDAQ:XFOR)
Filing Date:
2017-11-29
SEC Url:
13D Filing
Ownership Summary

Please notice the below summary table is generated without human intervention and may contain errors. Please refer to the complete filing displayed below for exact figures.

Name Sole Voting Power Shared Voting Power Sole Dispositive Power Shared Dispositive Power Aggregate Amount Owned Power Percent of Class
Polaris Venture Partners V 1,803,429 1,803,429 1,803,429 13.2%
Polaris Venture Partners Entrepreneurs 146 Fund V 35,146 35,146 35,146 0.3%
Polaris Venture Partners Founders 146 Fund V 12,351 12,351 12,351 0.1%
Polaris Venture Partners Special Founders 146 Fund V 18,031 18,031 18,031 0.1%
Polaris Venture Management Co. V 1,868,957 1,868,957 1,868,957 13.7%
Jonathan A. Flint 1,868,957 1,868,957 1,868,957 13.7%
Terrance G. McGuire 1,868,957 1,868,957 1,868,957 13.7%
Filing

 

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

 

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No.     )*

 

 

ARSANIS, INC.

 

(Name of Issuer)

Common Stock, $0.001 par value

 

(Title of Class of Securities)

042873109

 

(CUSIP Number)

 

Polaris Partners

One Marina Park Drive, 10th Floor

Boston, MA 02210

 

Gunderson Dettmer Stough Villeneuve

Franklin & Hachigian, LLP

One Marina Park Drive, Suite 900

Boston, MA 02210

Attn: Jay K. Hachigian, Esq.

(617) 648-9100

 

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

November 20, 2017

 

(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 that 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:  ☐

 

 

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 persons 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 (Act) 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. 042873109   Page 2 of 15

 

  1.  

Names of Reporting Persons.

 

Polaris Venture Partners V, L.P. (PVP V)

  2.  

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

(a)  ☐        (b)  ☒

 

  3.  

SEC Use Only

 

  4.  

Source of Funds (See Instructions)

 

WC

  5.  

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

 

  6.  

Citizenship or Place of Organization

 

Delaware

Number of  

Shares  

Beneficially  

Owned by  

Each  

Reporting  

Person With  

 

    7.   

Sole Voting Power

 

1,803,429 shares of Common Stock, except that (i) Polaris Venture Management Co. V, L.L.C. (PVM V), the general partner of PVP V, may be deemed to have sole power to vote these shares, and (ii) Jonathan A. Flint (Flint), a managing member of PVM V, may be deemed to have shared power to vote these shares, and Terrance G. McGuire (McGuire), a member of the Issuers Board of Directors and a managing member of PVM V, may be deemed to have shared power to vote these shares.

    8.   

Shared Voting Power

 

See response to row 7.

    9.   

Sole Dispositive Power

 

1,803,429 shares of Common Stock, except that (i) PVM V, the general partner of PVP V, may be deemed to have sole power to dispose of these shares, and (ii) Flint, a managing member of PVM V, may be deemed to have shared power to dispose of these shares, and McGuire, a member of the Issuers Board of Directors and a managing member of PVM V, may be deemed to have shared power to dispose of these shares.

  10.       

Shared Dispositive Power

 

See response to row 9.

11.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

    1,803,429

12.  

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

 

13.  

Percent of Class Represented by Amount in Row (11)

 

    13.2%

14.  

Type of Reporting Person (See Instructions)

 

    PN


CUSIP No. 042873109   Page 3 of 15

 

  1.  

Names of Reporting Persons.

 

Polaris Venture Partners Entrepreneurs Fund V, L.P. (PVPE V)

  2.  

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

(a)  ☐        (b)  ☒

 

  3.  

SEC Use Only

 

  4.  

Source of Funds (See Instructions)

 

WC

  5.  

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

 

  6.  

Citizenship or Place of Organization

 

Delaware

Number of  

Shares  

Beneficially  

Owned by  

Each  

Reporting  

Person With  

 

    7.   

Sole Voting Power

 

35,146 shares of Common Stock, except that (i) PVM V, the general partner of PVPE V, may be deemed to have sole power to vote these shares, and (ii) Flint, a managing member of PVM V, may be deemed to have shared power to vote these shares, and McGuire, a member of the Issuers Board of Directors and a managing member of PVM V, may be deemed to have shared power to vote these shares.

    8.   

Shared Voting Power

 

See response to row 7.

    9.   

Sole Dispositive Power

 

35,146 shares of Common Stock, except that (i) PVM V, the general partner of PVPE V, may be deemed to have sole power to dispose of these shares, and (ii) Flint, a managing member of PVM V, may be deemed to have shared power to dispose of these shares, and McGuire, a member of the Issuers Board of Directors and a managing member of PVM V, may be deemed to have shared power to dispose of these shares.

  10.       

Shared Dispositive Power

 

See response to Row 9.

11.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

    35,146

12.  

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

 

13.  

Percent of Class Represented by Amount in Row (11)

 

    0.3%

14.  

Type of Reporting Person (See Instructions)

 

    PN


CUSIP No. 042873109   Page 4 of 15

 

  1.  

Names of Reporting Persons.

 

Polaris Venture Partners Founders Fund V, L.P. (PVPFF V)

  2.  

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

(a)  ☐        (b)  ☒

 

  3.  

SEC Use Only

 

  4.  

Source of Funds (See Instructions)

 

WC

  5.  

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

 

  6.  

Citizenship or Place of Organization

 

Delaware

Number of  

Shares  

Beneficially  

Owned by  

Each  

Reporting  

Person With  

 

    7.   

Sole Voting Power

 

12,351 shares of Common Stock except that (i) PVM V, the general partner of PVPFF V, may be deemed to have sole power to vote these shares, and (ii) Flint, a managing member of PVM V, may be deemed to have shared power to vote these shares, and McGuire, a member of the Issuers Board of Directors and a managing member of PVM V, may be deemed to have shared power to vote these shares.

    8.   

Shared Voting Power

 

See response to row 7.

    9.   

Sole Dispositive Power

 

12,351 shares of Common Stock, except that (i) PVM V, the general partner of PVPFF V, may be deemed to have sole power to dispose of these shares, and (ii) Flint, a managing member of PVM V, may be deemed to have shared power to dispose of these shares, and McGuire, a member of the Issuers Board of Directors and a managing member of PVM V, may be deemed to have shared power to dispose of these shares.

  10.       

Shared Dispositive Power

 

See response to Row 9.

11.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

    12,351

12.  

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

 

13.  

Percent of Class Represented by Amount in Row (11)

 

    0.1%

14.  

Type of Reporting Person (See Instructions)

 

    PN


CUSIP No. 042873109   Page 5 of 15

 

  1.  

Names of Reporting Persons.

 

Polaris Venture Partners Special Founders Fund V, L.P. (PVPSFF V)

  2.  

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

(a)  ☐        (b)  ☒

 

  3.  

SEC Use Only

 

  4.  

Source of Funds (See Instructions)

 

WC

  5.  

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

 

  6.  

Citizenship or Place of Organization

 

Delaware

Number of  

Shares  

Beneficially  

Owned by  

Each  

Reporting  

Person With  

 

    7.   

Sole Voting Power

 

18,031 shares of Common Stock, except that (i) PVM V, the general partner of PVPSFF V, may be deemed to have sole power to vote these shares, and (ii) Flint, a managing member of PVM V, may be deemed to have shared power to vote these shares, and McGuire, a member of the Issuers Board of Directors and a managing member of PVM V, may be deemed to have shared power to vote these shares.

    8.   

Shared Voting Power

 

See response to row 7.

    9.   

Sole Dispositive Power

 

18,031 shares of Common Stock, except that (i) PVM V, the general partner of PVPSFF V, may be deemed to have sole power to dispose of these shares, and (ii) Flint, a managing member of PVM V, may be deemed to have shared power to dispose of these shares, and McGuire, a member of the Issuers Board of Directors and a managing member of PVM V, may be deemed to have shared power to dispose of these shares.

  10.       

Shared Dispositive Power

 

See response to row 9.

11.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

    18,031

12.  

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

 

13.  

Percent of Class Represented by Amount in Row (11)

 

    0.1%

14.  

Type of Reporting Person (See Instructions)

 

    PN


CUSIP No. 042873109   Page 6 of 15

 

  1.  

Names of Reporting Persons.

 

Polaris Venture Management Co. V, L.L.C. (PVM V)

  2.  

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

(a)  ☐        (b)  ☒

 

  3.  

SEC Use Only

 

  4.  

Source of Funds (See Instructions)

 

AF

  5.  

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

 

  6.  

Citizenship or Place of Organization

 

Delaware

Number of  

Shares  

Beneficially  

Owned by  

Each  

Reporting  

Person With  

 

    7.   

Sole Voting Power

 

1,868,957 shares, of which (a) 1,803,429 shares are directly owned by PVP V, (b) 35,146 shares are directly owned by PVPE V, (c) 12,351 shares are directly owned by PVPFF V, and (d) 18,031 shares are directly owned by PVPSFF V, except that Flint, a managing member of PVM V, the general partner of each of PVP V, PVPE V, PVPFF V and PVPSFF V, may be deemed to have shared power to vote PVP Vs, PVPE Vs, PVPFF Vs and PVPSFF Vs shares (collectively, the Fund V Shares), and McGuire, a member of the Issuers Board of Directors and a managing member of PVM V, may be deemed to have shared power to vote these shares.

    8.   

Shared Voting Power

 

See response to row 7.

    9.   

Sole Dispositive Power

 

1,868,957 shares, of which (a) 1,803,429 shares are directly owned by PVP V, (b) 35,146 shares are directly owned by PVPE V, (c) 12,351 shares are directly owned by PVPFF V, and (d) 18,031 shares are directly owned by PVPSFF V, except that Flint, a managing member of PVM V, the general partner of each of PVP V, PVPE V, PVPFF V and PVPSFF V, may be deemed to have shared power to dispose of the Fund V Shares, and McGuire, a member of the Issuers Board of directors and a managing member of PVM V, may be deemed to have shared power to dispose of these shares.

  10.       

Shared Dispositive Power

 

See response to row 9.

11.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

    1,868,957

12.  

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

 

13.  

Percent of Class Represented by Amount in Row (11)

 

    13.7%

14.  

Type of Reporting Person (See Instructions)

 

    OO


CUSIP No. 042873109   Page 7 of 15

 

  1.  

Names of Reporting Persons.

 

Jonathan A. Flint

  2.  

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

(a)  ☐        (b)  ☒

 

  3.  

SEC Use Only

 

  4.  

Source of Funds (See Instructions)

 

AF

  5.  

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

 

  6.  

Citizenship or Place of Organization

 

USA

Number of  

Shares  

Beneficially  

Owned by  

Each  

Reporting  

Person With  

 

    7.   

Sole Voting Power

 

1,868,957 shares, of which (a) 1,803,429 shares are directly owned by PVP V, (b) 35,146 shares are directly owned by PVPE V, (c) 12,351 shares are directly owned by PVPFF V, and (d) 18,031 shares are directly owned by PVPSFF V, except that PVM V, the general partner of PVP V, PVPE V, PVPFF V and PVPSFF V, may be deemed to have sole power to vote the Fund V Shares, and McGuire, a member of the Issuers Board of Directors and a managing member of PVM V, may be deemed to have shared power to vote the Fund V Shares.

    8.   

Shared Voting Power

 

See response to row 7.

    9.   

Sole Dispositive Power

 

1,868,957 shares, of which (a) 1,803,429 shares are directly owned by PVP V, (b) 35,146 shares are directly owned by PVPE V, (c) 12,351 shares are directly owned by PVPFF V, and (d) 18,031 shares are directly owned by PVPSFF V, except that PVM V, the general partner of PVP V, PVPE V, PVPFF V and PVPSFF V, maybe deemed to have sole power to dispose of the Fund V Shares, and McGuire, a member of the Issuers Board of Directors and a managing member of PVM V, may be deemed to have shared power to dispose of the Fund V Shares.

  10.       

Shared Dispositive Power

 

See response to row 9.

11.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

    1,868,957

12.  

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

 

13.  

Percent of Class Represented by Amount in Row (11)

 

    13.7%

14.  

Type of Reporting Person (See Instructions)

 

    IN


CUSIP No. 042873109   Page 8 of 15

 

  1.  

Names of Reporting Persons.

 

Terrance G. McGuire

  2.  

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

(a)  ☐        (b)  ☒

 

  3.  

SEC Use Only

 

  4.  

Source of Funds (See Instructions)

 

AF

  5.  

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

 

  6.  

Citizenship or Place of Organization

 

USA

Number of  

Shares  

Beneficially  

Owned by  

Each  

Reporting  

Person With  

 

    7.   

Sole Voting Power

 

1,868,957 shares, of which (a) 1,803,429 shares are directly owned by PVP V, (b) 35,146 shares are directly owned by PVPE V, (c) 12,351 shares are directly owned by PVPFF V, and (d) 18,031 shares are directly owned by PVPSFF V, except that PVM V, the general partner of PVP V, PVPE V, PVPFF V and PVPSFF V, may be deemed to have sole power to vote the Fund V Shares, and Flint, a managing member of PVM V, may be deemed to have shared power to vote the Fund V Shares.

    8.   

Shared Voting Power

 

See response to row 7.

    9.   

Sole Dispositive Power

 

1,868,957 shares, of which (a) 1,803,429 shares are directly owned by PVP V, (b) 35,146 shares are directly owned by PVPE V, (c) 12,351 shares are directly owned by PVPFF V, (d) 18,031 shares are directly owned by PVPSFF V, except that PVM V, the general partner of PVP V, PVPE V, PVPFF V and PVPSFF V, may be deemed to have sole power to dispose of the Fund V Shares, and Flint, a managing member of PVM V, may be deemed to have shared power to dispose of the Fund V Shares.

  10.       

Shared Dispositive Power

 

See response to row 9.

11.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

    1,868,957

12.  

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

 

13.  

Percent of Class Represented by Amount in Row (11)

 

    13.7%

14.  

Type of Reporting Person (See Instructions)

 

    IN


CUSIP No. 042873109    Page 9 of 15

 

SCHEDULE 13D

Item 1. Security and Issuer.

This statement on Schedule 13D relates to the Common Stock, $0.001 par value per share (the Common Stock), of Arsanis, Inc. (the Issuer). The Issuers principal executive office is located at 890 Winter Street, Suite 230 Waltham, MA 02451.

Item 2. Identity and Background.

(a) This Schedule 13D is being filed on behalf of each of the following persons pursuant to Rule 13d-1(k) of Regulation D-G under the Securities Exchange Act of 1934, as amended (the Exchange Act): Polaris Venture Partners V, L.P. (PVP V), Polaris Venture Partners Entrepreneurs Fund V, L.P. (PVPE V), Polar Venture Partners Founders Fund V, L.P (PVPFF V), Polaris Venture Partners Special Founders Fund, L.P. (PVPSFF V), Polaris Venture Management Co. V, L.L.C. (PVM V), Jonathan A. Flint (Flint), and Terrance G. McGuire (McGuire) (collectively, the Reporting Persons). Although Amy Schulman, a member of the Issuers Board of Directors, is affiliated with certain affiliates of PVP V, PVPE V, PVPFF V and PVPSFF V (the Polaris V Funds), she does not have voting or dispositive power with respect to the shares owned by the Polaris V Funds and referenced on this Schedule 13D. The Reporting Persons are making this single, joint filing because they may be deemed to constitute a group within the meaning of Section 13(d)(3) of the Exchange Act. The agreement between the Reporting Persons to file as a group (the Joint Filing Agreement) is attached hereto as Exhibit A.

(b)-(c) The principal business of each of PVP V, PVPE V, PVPFF V and PVPSFF V is that of a private investment partnership. The sole general partner of each of PVP V, PVPE V, PVPFF V and PVPSFF V is PVM V. The principal business of PVM V is that of a limited liability company acting as the general partner of each of PVP V, PVPE V, PVPFF V and PVPSFF V. Flint and McGuire are the managing members of PVM V and McGuire is a member of the Issuers Board of Directors.

The principal business address of each of the Reporting Persons named in this Item 2 is c/o Polaris Partners, One Marina Park Drive, 10th Floor, Boston, Massachusetts, 02210.

(d)-(e) During the last five years, none of the Reporting Persons or individuals named in this Item 2 has (i) been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors); or (ii) been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction resulting in his being subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

(f) Each of the individuals named in this Item 2 is a citizen of the United States. Each of PVP V, PVPE V, PVPFF V and PVPSFF V is a Delaware limited partnership. PVM V is a Delaware limited liability company.

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

On November 15, 2017, the Registration Statement on Form S-1 filed with the Securities and Exchange Commission by the Issuer (File No. 333-221050) in connection with its initial public offering of 4,000,000 shares of Common Stock was declared effective. The initial public offering closed on November 20, 2017.

In a number of transactions prior to the Issuers initial public offering, the Reporting Persons acquired shares of Series A-1 Convertible Preferred Stock convertible into 19,532 shares of Common Stock, shares Series A-2 Convertible Preferred Stock convertible into 252,228 shares of Common Stock, shares Series B Convertible Preferred Stock convertible into 328,907 shares of Common Stock, shares Series C Convertible Preferred Stock convertible into 114,319 shares of Common Stock, and shares Series D Convertible Preferred Stock convertible into 653,971 shares of Common Stock, collectively for an aggregate purchase price


CUSIP No. 042873109    Page 10 of 15

 

of $17,900,916 (collectively, the Pre-IPO Shares). The Pre-IPO Shares converted into shares of Common Stock upon the closing of the initial public offering as follows: (i) the Series A-1 Convertible Preferred Stock converted into Common Stock on a .029300-for-one basis; (ii) the Series A-2 Convertible Preferred Stock converted into Common Stock on a 0.35785-for-one basis; (iii) the Series B Convertible Preferred Stock converted into Common Stock on a 0.44650-for-one basis; (iv) the Series C Convertible Preferred Stock converted into Common Stock on a 0.49832-for-one basis; and (v) the Series D Convertible Preferred Stock converted into Common Stock on a 0.29300-for-one basis.

On November 20, 2017, the Reporting person acquired 500,000 shares of Common Stock for an aggregate purchase price of $5,000,000 (the IPO shares).

The Reporting Persons obtained the amounts required for all purchasers of Pre-IPO shares and IPO shares from their working capital.

Item 4. Purpose of Transaction.

McGuire, as a director of the Issuer and managing member of PVM V, and Flint, by virtue of his role as a managing member of PVM V, may each be deemed to hold certain voting powers with respect to the reportable securities owned by PVP V, PVPE V, PVPFF V, and PVPSFF V. Except as otherwise described in this statement, the Reporting Persons do not have any present plans or proposals that relate to or would result in: (i) the acquisition by any person of additional securities of the Issuer, or the disposition of securities of the Issuer; (ii) an extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries; (iii) a sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries; (iv) any change in the present board of directors or management of the Issuer, including any plans or proposals to change the number or term of directors or to fill any existing vacancies on the board; (v) any material change in the present capitalization or dividend policy of the Issuer; (vi) any other material change in the Issuers business or corporate structure; (vii) changes in the Issuers charter, by-laws or instruments corresponding thereto or other actions which may impede the acquisition of control of the Issuer by any person; (viii) causing a class of securities of the Issuer to be de-listed from a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association; (ix) a class of equity securities of the Issuer becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Exchange Act; or (x) any action similar to any of those enumerated above.

Item 5. Interest in Securities of the Issuer.

The information below and reported in row 13 in each of the cover pages hereto is based on a total of 13,694,383 shares of Common Stock outstanding as reported on the Issuers Prospectus filed with the Securities and Exchange Commission on November 17, 2017.

(a) PVP V beneficially owns 1,803,429 shares of Common Stock, or approximately 13.2% of the Common Stock outstanding. PVPE V beneficially owns 35,146 shares of Common Stock, or approximately 0.3% of the Common Stock outstanding. PVPFF V beneficially owns 12,351 shares of Common Stock, or approximately 0.1% of the Common Stock outstanding. PVPSFF V beneficially owns 18,031 shares of Common Stock, or approximately 0.1% of the Common Stock outstanding. PVM V, as the general partner of each of PVP V, PVPE V, PVPFF V and PVPSFF V, may be deemed to indirectly beneficially own the securities owned by each of PVP V, PVPE V, PVPFF V and PVPSFF V, respectively, or 13.7% of the Common Stock outstanding.

(b) The managing members of PVM V may be deemed to share the power to vote or direct the voting of and to dispose or direct the disposition of the securities of the Issuer that are beneficially owned by each of PVP V, PVPE V, PVPFF V and PVPSFF V. Each of Flint, McGuire and PVM V disclaims beneficial ownership of all securities other than those he or it owns directly, if any, or by virtue of his or its indirect pro rata interest, as a member of PVM V, in the securities owned by PVP V, PVPE V, PVPFF V and PVPSFF V. PVM V may be deemed to have sole power to vote or direct the voting of and to dispose or direct the disposition of the securities of the Issuer that are beneficially owned by PVP V, PVPE V, PVPFF V and PVPSFF V.


CUSIP No. 042873109    Page 11 of 15

 

(c) Except as described in this statement, none of the Reporting Persons has effected any transactions in the Common Stock in the 60 days prior to the date of this statement.

(d) Except as described in this statement, no person has the power to direct the receipt of dividends on or the proceeds of sales of, the shares of Common Stock owned by the Reporting Persons.

(e) Not applicable.

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

Each of PVP V, PVPE V, PVPFF V and PVPSFF V and certain other investors are party to a Second Amended and Restated Investors Rights Agreement, as amended from time to time (the IRA) entered into with the Issuer; and the individuals and entities listed on Exhibit A thereto.

The Reporting Persons are subject to a restricted period during the period ending 180 days after the date of the Prospectus, during which the Reporting Persons have agreed, subject to limited exceptions, not to offer, pledge, sell, contract to sell, sell any options or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, lend, or otherwise transfer or dispose of, directly or indirectly, any shares of common stock beneficially owned by the Issuer or Reporting Persons or any securities so owned convertible into or exercisable or exchangeable for common stock or enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of the common stock, or publicly disclose the intention to make any such offer, pledge sale, contract, purchase, grant, loan, transfer, or disposition, or enter into any such swap or other arrangement. The IRA is attached as Exhibit 10.1 to the Issuers Registration Statement on Form S-1 (File No. 333-221050), and is incorporated herein by reference.

In connection with the IPO, each of the PVP V, PVPE V, PVPFF V and PVPSFF V have entered into a lock-up agreement (the Lock-Up Agreement), pursuant to which such entities agreed, subject to certain exceptions, not to sell, transfer or otherwise convey any of the Issuers securities held by them for a certain period following the date of the IPO. The form of Lock-Up Agreement is attached as Exhibit 1.1 to the Issuers Registration Statement on Form S-1 (File No. 333-221050), and is incorporated herein by reference.

The Issuer has entered into an indemnification agreement with each of its directors and executive officers, including McGuire. The indemnification agreement, among other things, requires the Issuer or will require the Issuer to indemnify McGuire (and in certain cases each of PVP V, PVPE V, PVPFF V and PVPSFF V) to the fullest extent permitted by Delaware law, including indemnification of expenses such as attorneys fees, judgments, fines and settlement amounts incurred by McGuire in any action or proceeding, including any action or proceeding by or in right of the Issuer, arising out of his services as a director. The form of Indemnification Agreement for the Issuers directors and officers is attached as Exhibit 10.14 to the Issuers Registration Statement on Form S-1 (File No. 333-221050), and is incorporated herein by reference.

Item 7. Material to be Filed as Exhibits.

Exhibit A Joint Filing Agreement

Exhibit B IRA, filed on November 16, 2017 as Exhibit 10.1 to the Issuers Registration Statement on Form S-1 (File No. 333-221050), and incorporated herein by reference.

Exhibit C Form of Lock-up Agreement, filed on November 20, 2017 as Exhibit C to the Underwriting Agreement, filed on November 16, 2017 as Exhibit 1.1 to the Issuers Registration Statement on Form S-1 (File No. 333-221050), and incorporated herein by reference.

Exhibit D Form of Indemnification Agreement for board members and senior management, filed on October 20, 2017 as Exhibit 10.14 to the Issuers Registration Statement on Form S-1 (File No. 333-221050), and incorporated herein by reference.


CUSIP No. 042873109    Page 12 of 15

 

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.

Date: November 29, 2017

POLARIS VENTURE PARTNERS V, L.P.

 

By: Polaris Venture Management Co. V, L.L.C.

By:                 *
  Managing Member

 

POLARIS VENTURE PARTNERS

ENTREPRENEURS FUND V, L.P.

 

By: Polaris Venture Management Co. V, L.L.C.

By:                 *
  Managing Member

 

POLARIS VENTURE PARTNERS

FOUNDERS FUND V, L.P.

 

By: Polaris Venture Management Co. V, L.L.C.

By:                 *
  Managing Member

 

POLARIS VENTURE PARTNERS SPECIAL

FOUNDERS FUND V, L.P.

 

By: Polaris Venture Management Co. V, L.L.C.

By:                 *
  Managing Member

CUSIP No. 042873109    Page 13 of 15

 

POLARIS VENTURE MANAGEMENT CO. V, L.L.C.
By:                 *
  Managing Member

 

JONATHAN A. FLINT
By:                 *
Jonathan A. Flint

 

TERRANCE G. MCGUIRE
By:                 *
Terrance G. McGuire

 

*By:     /s/ Max Eisenberg
Name:   Max Eisenberg
  Attorney-in-Fact

[This Schedule 13D was executed pursuant to a Power of Attorney. Note that copies of the applicable Powers of Attorney are already on file with the appropriate agencies.]


CUSIP No. 042873109    Page 14 of 15

 

Exhibit A

AGREEMENT REGARDING THE JOINT FILING OF

SCHEDULE 13D

The undersigned, being duly authorized thereunto, hereby execute this agreement as an exhibit to this Schedule 13D to evidence the agreement of the below-named parties, in accordance with the rules promulgated pursuant to the Securities Exchange Act of 1934, to file this Schedule jointly on behalf of each such party.

Date: November 29, 2017

 

POLARIS VENTURE PARTNERS V, L.P.

 

By: Polaris Venture Management Co. V, L.L.C.

By:                 *
  Managing Member

 

POLARIS VENTURE PARTNERS

ENTREPRENEURS FUND V, L.P.

 

By: Polaris Venture Management Co. V, L.L.C.

By:                 *
  Managing Member

 

POLARIS VENTURE PARTNERS

FOUNDERS FUND V, L.P.

 

By: Polaris Venture Management Co. V, L.L.C.

By:                 *
  Managing Member

CUSIP No. 042873109    Page 15 of 15

 

POLARIS VENTURE PARTNERS SPECIAL

FOUNDERS FUND V, L.P.

 

By: Polaris Venture Management Co. V, L.L.C.

By:                 *
  Managing Member

 

POLARIS VENTURE MANAGEMENT CO.

V, L.L.C.

By:                 *
  Managing Member

 

JONATHAN A. FLINT
By:                 *
  Jonathan A. Flint

 

TERRANCE G. MCGUIRE
By:                 *
  Terrance G. McGuire

 

*By:     /s/ Max Eisenberg
Name:   Max Eisenberg
  Attorney-in-Fact

[This Schedule 13D was executed pursuant to a Power of Attorney.    Note that copies of the applicable Powers of Attorney are already on file with the appropriate agencies.]