UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

o

Rule 13d-1(b)

o

Rule 13d-1(c)

x

Rule 13d-1(d)

CUSIP No. 57063L107

1.

Names of Reporting Persons
Battery Ventures IX, L.P. (“BV9”)

2.

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

(a)

o

(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
1,995,262 shares, except that Battery Partners IX, LLC (“BP9”), the general partner of BV9 and managing member of BIP9, and its investment advisor Battery Management Corp. (“BMC,” and together with BP9, the “Battery IX Companies”) may be deemed to have sole power to direct the voting of these shares; each of Neeraj Agrawal (“Agrawal”), Michael Brown (“Brown”), Thomas J. Crotty (“Crotty”), Jesse Feldman (“Feldman”), Richard D. Frisbie (“Frisbie”), Kenneth P. Lawler (“Lawler”), Roger H. Lee (“Lee”), R. David Tabors (“Tabors”), and Scott R. Tobin (“Tobin”), each of whom is a managing member or officer of the Battery IX Companies, may be deemed to have shared power to direct the voting of these shares.

6.

Shared Voting Power
See response to row 5.

7.

Sole Dispositive Power
1,995,262 shares, except that the Battery IX Companies may be deemed to have sole power to direct the disposition of these shares; each of Agrawal, Brown, Crotty, Feldman, Frisbie, Lawler, Lee, Tabors and Tobin, each of whom is a managing member or officer of the Battery IX Companies, may be deemed to have shared power to direct the disposition of these shares.

8.

Shared Dispositive Power
See response to row 7.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
1,995,262 shares

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)
4.84%

12.

Type of Reporting Person (See Instructions)
PN

CUSIP No. 57063L107

1.

Names of Reporting Persons
Battery Investment Partners IX, LLC (“BIP9”)

2.

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

(a)

o

(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
19,950 shares, except that the Battery IX Companies may be deemed to have sole power to direct the voting of these shares; Agrawal, Brown, Crotty, Feldman, Frisbie, Lawler, Lee, Tabors and Tobin, each of whom is a managing member or officer of the Battery IX Companies, may be deemed to have shared power to direct the voting of these shares.

6.

Shared Voting Power
See response to row 5.

7.

Sole Dispositive Power
19,950 shares, except that the Battery IX Companies may be deemed to have sole power to direct the disposition of these shares; Agrawal, Brown, Crotty, Feldman, Frisbie, Lawler, Lee, Tabors and Tobin, each of whom is a managing member or officer of the Battery IX Companies, may be deemed to have shared power to direct the disposition of these shares.

8.

Shared Dispositive Power
See response to row 7.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
19,950 shares

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)
0.05%

12.

Type of Reporting Person (See Instructions)
OO

CUSIP No. 57063L107

1.

Names of Reporting Persons
Battery Partners IX, LLC (“BP9”)

2.

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

(a)

o

(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
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9, except that Agrawal, Brown, Crotty, Feldman, Frisbie, Lawler, Lee, Tabors and Tobin, each of whom is a managing member or officer of the Battery IX Companies, may be deemed to have shared power to direct the voting of these shares.

6.

Shared Voting Power
See response to row 5.

7.

Sole Dispositive Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9, except that Agrawal, Brown, Crotty, Feldman, Frisbie, Lawler, Lee, Tabors and Tobin, each of whom is a managing member or officer of the Battery IX Companies, may be deemed to have shared power to direct the disposition of these shares.

8.

Shared Dispositive Power
See response to row 7.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
2,015,212 shares

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)
4.89%

12.

Type of Reporting Person (See Instructions)
OO

CUSIP No. 57063L107

1.

Names of Reporting Persons
Battery Management Corp. (“BMC”)

2.

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

(a)

o

(b)

x

3.

SEC Use Only

4.

Citizenship or Place of Organization
Massachusetts

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9, except that Agrawal, Brown, Crotty, Feldman, Frisbie, Lawler, Lee, Tabors and Tobin, each of whom is a managing member or officer of the Battery IX Companies, may be deemed to have shared power to direct the voting of these shares.

6.

Shared Voting Power
See response to row 5.

7.

Sole Dispositive Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9, except that Agrawal, Brown, Crotty, Feldman, Frisbie, Lawler, Lee, Tabors and Tobin, each of whom is a managing member or officer of the Battery IX Companies, may be deemed to have shared power to direct the disposition of these shares.

8.

Shared Dispositive Power
See response to row 7.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
2,015,212 shares

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)
4.89%

12.

Type of Reporting Person (See Instructions)
OO

CUSIP No. 57063L107

1.

Names of Reporting Persons
Neeraj Agrawal

2.

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

(a)

o

(b)

x

3.

SEC Use Only

4.

Citizenship or Place of Organization
USA

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
25,255, 16,800 of which are shares which Agrawal has the right to acquire within sixty days through the exercise of an option to purchase shares. 

6.

Shared Voting Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Agrawal is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the voting of these shares.

7.

Sole Dispositive Power
25,255, 16,800 of which are shares which Agrawal has the right to acquire within sixty days through the exercise of an option to purchase shares.

8.

Shared Dispositive Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Agrawal is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the disposition of these shares.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
2,040,467 shares

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)
4.95%

12.

Type of Reporting Person (See Instructions)
IN

CUSIP No. 57063L107

1.

Names of Reporting Persons
Michael Brown

2.

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

(a)

o

(b)

x

3.

SEC Use Only

4.

Citizenship or Place of Organization
USA

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
5,300

6.

Shared Voting Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Crotty is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the voting of these shares.

7.

Sole Dispositive Power
5,300

8.

Shared Dispositive Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Crotty is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the disposition of these shares.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
2,020,512 shares

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)
4.90%

12.

Type of Reporting Person (See Instructions)
IN

CUSIP No. 57063L107

1.

Names of Reporting Persons
Thomas J. Crotty

2.

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

(a)

o

(b)

x

3.

SEC Use Only

4.

Citizenship or Place of Organization
USA

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
0

6.

Shared Voting Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Crotty is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the voting of these shares.

7.

Sole Dispositive Power
0

8.

Shared Dispositive Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Crotty is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the disposition of these shares.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
2,015,212 shares

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)
4.89%

12.

Type of Reporting Person (See Instructions)
IN

CUSIP No. 57063L107

1.

Names of Reporting Persons
Jesse Feldman

2.

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

(a)

o

(b)

x

3.

SEC Use Only

4.

Citizenship or Place of Organization
USA

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
0

6.

Shared Voting Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Feldman is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the voting of these shares.

7.

Sole Dispositive Power
0

8.

Shared Dispositive Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Feldman is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the disposition of these shares.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
2,015,212 shares

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)
4.89%

12.

Type of Reporting Person (See Instructions)
IN

CUSIP No. 57063L107

1.

Names of Reporting Persons
Richard D. Frisbie

2.

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

(a)

o

(b)

x

3.

SEC Use Only

4.

Citizenship or Place of Organization
USA

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
0

6.

Shared Voting Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Frisbie is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the voting of these shares.

7.

Sole Dispositive Power
0

8.

Shared Dispositive Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Frisbie is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the disposition of these shares.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
2,015,212 shares

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)
4.89%

12.

Type of Reporting Person (See Instructions)
IN

CUSIP No. 57063L107

1.

Names of Reporting Persons
Kenneth P. Lawler

2.

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

(a)

o

(b)

x

3.

SEC Use Only

4.

Citizenship or Place of Organization
USA

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
0

6.

Shared Voting Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Lawler is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the voting of these shares.

7.

Sole Dispositive Power
0

8.

Shared Dispositive Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Lawler is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the disposition of these shares.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
2,015,212 shares

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)
4.89%

12.

Type of Reporting Person (See Instructions)
IN

CUSIP No. 57063L107

1.

Names of Reporting Persons
Roger H. Lee

2.

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

(a)

o

(b)

x

3.

SEC Use Only

4.

Citizenship or Place of Organization
USA

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
8,455

6.

Shared Voting Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Lee is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the voting of these shares.

7.

Sole Dispositive Power
8,455

8.

Shared Dispositive Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Lee is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the disposition of these shares.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
2,023,667 shares

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)
4.91%

12.

Type of Reporting Person (See Instructions)
IN

CUSIP No. 57063L107

1.

Names of Reporting Persons
R. David Tabors

2.

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

(a)

o

(b)

x

3.

SEC Use Only

4.

Citizenship or Place of Organization
USA

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
0

6.

Shared Voting Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Tabors is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the voting of these shares.

7.

Sole Dispositive Power
0

8.

Shared Dispositive Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Tabors is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the disposition of these shares.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
2,015,212 shares

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)
4.89%

12.

Type of Reporting Person (See Instructions)
IN

CUSIP No. 57063L107

1.

Names of Reporting Persons
Scott R. Tobin

2.

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

(a)

o

(b)

x

3.

SEC Use Only

4.

Citizenship or Place of Organization
USA

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
0

6.

Shared Voting Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Tobin is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the voting of these shares.

7.

Sole Dispositive Power
0

8.

Shared Dispositive Power
2,015,212 shares, of which 1,995,262 shares are directly owned by BV9 and 19,950 shares are directly owned by BIP9. Tobin is a managing member or officer of the Battery IX Companies, and may be deemed to have shared power to direct the disposition of these shares.

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
2,015,212 shares

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)
4.89%

12.

Type of Reporting Person (See Instructions)
IN

Item 1.

(a)

Name of Issuer
Marketo, Inc.

(b)

Address of Issuer’s Principal Executive Offices
901 Mariners Island Boulevard, Suite 200

San Mateo, California 94404

Item 2.

(a)

Name of Person Filing
Battery Ventures IX, L.P. (“BV9”), Battery Investment Partners IX, LLC (“BIP9”), Battery Partners IX, LLC (“BP9 LLC”), Battery Management Corp. (“BMC”), Neeraj Agrawal (“Agrawal”), Michael Brown (“Brown”), Thomas J. Crotty (“Crotty”), Jesse Feldman (“Feldman”), Richard D. Frisbie (“Frisbie”), Kenneth P. Lawler (“Lawler”), Roger H. Lee (“Lee”), R. David Tabors (“Tabors”) and Scott R. Tobin (“Tobin”).  The foregoing entities and individuals are collectively referred to as the “Reporting Persons.”

Messrs. Agrawal, Brown, Crotty, Feldman, Frisbie, Lawler, Lee, Tabors and Tobin are the sole managing members of BP9, the general partner of BV9 and managing member of BIP9 and/or the officers of BMC, the investment advisor to BP9.

(b)

Address of Principal Business Office or, if none, Residence
Battery Ventures

One Marina Park Drive

Suite 1100

Boston, MA 02210

(c)

Citizenship
Agrawal, Brown, Crotty, Feldman, Frisbie, Lawler, Lee, Tabors and Tobin are United States citizens.  BV9 is a limited partnership organized under the laws of the State of Delaware.  BIP9 is a limited liability company organized under the laws of the State of Delaware.  BP9 is a limited liability company organized under the laws of the State of Delaware. BMC is a corporation organized under the laws of the Commonwealth of Massachusetts.

(d)

Title of Class of Securities
Common Stock, par value $0.0001 per share

(e)

CUSIP Number
57063L107

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 association 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.

The approximate percentages of Common Stock reported as beneficially owned by the Reporting Persons is based upon 41,212,204 shares of Common Stock outstanding as of  November 6, 2014, as reported in the Issuer’s Form 10-Q filed on 11/10/2014; provided, that the approximate percentages of Common Stock reported as beneficially owned by Agrawal is based upon 41,229,004, which includes the number of shares which Agrawal has the right to acquire through the exercise of an option to purchase shares.

(a)

Amount beneficially owned:   

See Row 9 of cover page for each Reporting Person.

(b)

Percent of class:   

See Row 11 of cover page for each Reporting Person.

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote   

See Row 5 of cover page for each Reporting Person.

(ii)

Shared power to vote or to direct the vote    

See Row 6 of cover page for each Reporting Person.

(iii)

Sole power to dispose or to direct the disposition of   

See Row 7 of cover page for each Reporting Person.

(iv)

Shared power to dispose or to direct the disposition of   

See Row 8 of cover page for each Reporting Person.

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.

Item 6.

Ownership of More than Five Percent on Behalf of Another Person

Under certain circumstances set forth in the limited partnership agreement of BV9, the general and limited partners may be deemed to have the right to receive dividends from, or the proceeds from, the sale of shares of the Issuer owned by BV9.  Under certain circumstances set forth in the limited liability company agreement of BIP9, the members may be deemed to have the right to receive dividends from, or the proceeds from, the sale of shares of the Issuer owned by BIP9.

Item 7.

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

N/A

Item 8.

Identification and Classification of Members of the Group

Item 9.

Notice of Dissolution of Group

Item 10.

Certification

BATTERY VENTURES IX, L.P.

By:

Battery Partners IX, LLC

By:

*

Managing Member

BATTERY INVESTMENT PARTNERS IX, LLC

By:

Battery Partners IX, LLC

By:

*

Managing Member

BATTERY PARTNERS IX, LLC

By:

*

Managing Member

BATTERY MANAGEMENT CORP.

By:

*

Chief Financial Officer

NEERAJ AGRAWAL

By:

*

Neeraj Agrawal

MICHAEL BROWN

By:

*

Michael Brown

THOMAS J. CROTTY

By:

*

Thomas J. Crotty

JESSE FELDMAN

By:

*

Jesse Feldman

RICHARD D. FRISBIE

By:

*

Richard D. Frisbie

KENNETH P. LAWLER

By:

*

Kenneth P. Lawler

ROGER H. LEE

By:

*

Roger H. Lee

R. DAVID TABORS

By:

*

R. David Tabors

SCOTT R. TOBIN

By:

*

Scott R. Tobin

*By:

/s/ Christopher Schiavo

Name:

Christopher Schiavo

Attorney-in-Fact

ATTENTION

Intentional misstatements or omissions of fact constitute Federal Criminal Violations (See 18 U.S.C. 1001).