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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

(RULE 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13D-1(a)
AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13D-2(a)

Under the Securities Exchange Act of 1934
(Amendment No. )*

TECHTARGET, INC.

(Name of Issuer)

Common Stock, par value $0.001 per share

(Title of Class of Securities)

87874R 10 0

(CUSIP Number)

Carla S. Newell
c/o Technology Crossover Ventures
528 Ramona Street
Palo Alto, California 94301
(650) 614-8200

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

May 22, 2007

(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. 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 (“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.

NAMES OF REPORTING PERSONS:

TCV V, L.P.

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

See item 2 for identification of the General Partner

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

DELAWARE

SOLE VOTING POWER:

NUMBER OF

12,150,808 SHARES OF COMMON STOCK (A)

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

-0- SHARES OF COMMON STOCK

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

12,150,808 SHARES OF COMMON STOCK (A)

WITH

SHARED DISPOSITIVE POWER:

-0- SHARES OF COMMON STOCK

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

12,150,808 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

31.1%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.


CUSIP No.

NAMES OF REPORTING PERSONS:

TCV Member Fund, L.P.

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

See item 2 for identification of a General Partner

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

DELAWARE

SOLE VOTING POWER:

NUMBER OF

231,106 SHARES OF COMMON STOCK (A)

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

-0- SHARES OF COMMON STOCK

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

231,106 SHARES OF COMMON STOCK (A)

WITH

SHARED DISPOSITIVE POWER:

-0- SHARES OF COMMON STOCK

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

231,106 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

Less than 1%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.


CUSIP No.

NAMES OF REPORTING PERSONS:

Technology Crossover Management V, L.L.C.

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

See item 2 for identification of the Managing Members

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

DELAWARE

SOLE VOTING POWER:

NUMBER OF

12,381,914 SHARES OF COMMON STOCK (A)

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

-0- SHARES OF COMMON STOCK

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

12,381,914 SHARES OF COMMON STOCK (A)

WITH

SHARED DISPOSITIVE POWER:

-0- SHARES OF COMMON STOCK

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

12,381,914 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

31.7%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.


CUSIP No.

NAMES OF REPORTING PERSONS:

JAY C. HOAG

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

12,381,914 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0- SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

12,381,914 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

12,381,914 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

31.7%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.


CUSIP No.

NAMES OF REPORTING PERSONS:

RICHARD H. KIMBALL

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

12,381,914 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0- SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

12,381,914 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

12,381,914 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

31.7%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.


CUSIP No.

NAMES OF REPORTING PERSONS:

JOHN L. DREW

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

12,381,914 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0- SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

12,381,914 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

12,381,914 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

31.7%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.


CUSIP No.

NAMES OF REPORTING PERSONS:

JON Q. REYNOLDS JR.

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

12,381,914 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0- SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

12,381,914 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

12,381,914 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

31.7%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.


CUSIP No.

NAMES OF REPORTING PERSONS:

WILLIAM J. G. GRIFFITH IV

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

12,381,914 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0- SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

12,381,914 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

12,381,914 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

31.7%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.


CUSIP No.

NAMES OF REPORTING PERSONS:

HENRY J. FEINBERG

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

12,381,914 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0- SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

12,381,914 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

12,381,914 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

31.7%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

ITEM 1. SECURITY AND ISSUER.

This statement relates to shares of common stock, par value $0.001 per share (the “Common Stock”), of TechTarget, Inc., a Delaware corporation (“TechTarget” or the “Company”). The Company’s principal executive offices are located at 117 Kendrick Street, Suite 800, Needham, Massachusetts 02494.

ITEM 2. IDENTITY AND BACKGROUND.

(a)-(c), (f). This statement is being filed by (1) TCV V, L.P., a Delaware limited partnership (“TCV V”), (2) TCV Member Fund, L.P., a Delaware limited partnership (“Member Fund”), (3) Technology Crossover Management V, L.L.C., a Delaware limited liability company (“Management V”), (4) Jay C. Hoag (“Mr. Hoag”), (5) Richard H. Kimball (“Mr. Kimball”), (6) John L. Drew (“Mr. Drew”), (7) Jon Q. Reynolds Jr. (“Mr. Reynolds”), (8) William J. G. Griffith IV (“Mr. Griffith”), and (9) Henry J. Feinberg (“Mr. Feinberg”) (Mr. Hoag, Mr. Kimball, Mr. Drew, Mr. Reynolds, Mr. Griffith and Mr. Feinberg are collectively referred to as the “Members”). TCV V, Member Fund, Management V and the Members are sometimes collectively referred to herein as the “Reporting Persons.” The agreement among the Reporting Persons relating to the joint filing of this statement is attached as Exhibit 1 hereto.

TCV V, Member Fund and Management V are each principally engaged in the business of investing in securities of privately and publicly held companies. Management V is the sole general partner of TCV V and a general partner of the Member Fund. The address of the principal business and office of each of TCV V, Member Fund and Management V is 528 Ramona Street, Palo Alto, California 94301.

Each of the Members is a Class A Member of Management V, the Members are each United States citizens, and the present principal occupation of each is a venture capital investor. The business address of each Member is 528 Ramona Street, Palo Alto, California 94301.

(d), (e). During the last five years, none of TCV V, Member Fund, Management V or the Members has (1) been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (2) been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is 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.

ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

Pursuant to the terms of a Series B Preferred Stock Purchase Agreement dated May 21, 2004, (the “B Purchase Agreement”) by and between the Company on the one hand, and TCV V and Member Fund (“TCV Funds”), on the other hand, the Company agreed to sell and TCV V and Member Fund agreed to purchase 36,083,135 and 681,570 shares of Series B Preferred Stock, respectively, at a purchase price of $1.36 per share. In consideration for the B Shares, the TCV Funds paid the Company an aggregate of $49,999,998.80. To give the effect of the reverse stock split each B Share converted into 0.25 shares of Common Stock upon the closing of the Company’s initial public offering (the “IPO”), such that the TCV V and Member Fund received 9,020,783 and 170,392 shares of Common Stock, respectively, as a result of such conversion.

The source of the funds for the acquisition of the B Shares by the TCV Funds was capital contributions from their respective partners.

Pursuant to the terms of a Series C Preferred Stock Purchase Agreement dated December 20, 2004 (the “C Purchase Agreement”) by and among the Company on the one hand, and the TCV Funds, on the other hand, the Company agreed to sell and TCV V and Member Fund agreed to purchase 4,976,648 and 94,003 shares of Series C Preferred Stock (the “C Shares”), at a purchase price of $1.4791 per share. In consideration for the C Shares, the TCV Funds paid the Company an aggregate of $7,499,999.90. To give the effect of the reverse stock split each C Share converted into 0.25 shares of Common Stock upon the closing of the Company’s IPO, such that the TCV V and Member Fund received 1,244,162 and 23,500 shares of Common Stock, respectively, as a result of such conversion

The source of the funds for the acquisition of the C Shares by the TCV Funds was capital contributions from their respective partners.

On May 22, 2006, TCV V and Member Fund purchased 1,885,863 and 37,214 shares of Common Stock respectively from the underwriters in the Company’s IPO at $13.00 per share, which was the initial price to the public (the “IPO Shares”).

The source of funds for the acquisition of the IPO Shares by TCV V and Member Fund was capital contributions from their respective partners.

ITEM 4. PURPOSE OF TRANSACTION.

The Reporting Persons acquired the securities referenced in Item 3 for investment purposes. Depending on the factors discussed herein, the Reporting Persons may, from time to time, acquire additional shares of Common Stock in the open market, in connection with issuances by the Company or sales by other stockholders in transactions registered under the Securities Act of 1933, as amended, in privately negotiated transactions or otherwise and/or retain and/or sell or otherwise dispose of all or a portion of their shares in the open market, through transactions registered under the Securities Act, through privately negotiated transactions or through distributions to their respective partners or otherwise. Any actions the Reporting Persons might undertake will be dependent upon the Reporting Persons’ review of numerous factors, including, among other things, the price levels of the Common Stock; general market and economic conditions; ongoing evaluation of the Company’s business, financial condition, operating results and prospects; the relative attractiveness of alternative business and investment opportunities; and other future developments.

Except as set forth above, the Reporting Persons have no present plans or intentions which would result in or relate to any of the transactions described in subparagraphs (a) through (j) of Item 4 of Schedule 13D.

ITEM 5. INTEREST IN SECURITIES OF THE ISSUER.

(a), (b). As of the close of business on May 22, 2007, TCV V, Member Fund, Management V and the Members owned, directly and indirectly, an aggregate of 12,381,914 shares as follows:


Name of Investor	Number of Total Shares		Percentage of Outstanding Shares(*)

TCV V		12,150,808		31.1	%
Member Fund		231,106	Less than 1%
Management V		12,381,914		31.7%	(**)
Mr. Hoag		12,381,914		31.7%	(**)
Mr. Kimball		12,381,914		31.7%	(**)
Mr. Drew		12,381,914		31.7%	(**)
Mr. Reynolds		12,381,914		31.7%	(**)
Mr. Griffith		12,381,914		31.7%	(**)
Mr. Feinberg		12,381,914		31.7%	(**)


(*)		all percentages in this table are based on the 39,059,534 shares of Common Stock of the Company outstanding after the Closing of the Company’s IPO as reported in the prospectus, dated as of May 16, 2007, as filed by the Company with the Securities and Exchange Commission on May 17, 2007 pursuant to Rule 424(b)(4).

(**)		Certain Reporting Persons disclaim beneficial ownership as set forth below.

Each of the TCV Funds has the sole power to dispose or direct the disposition of the shares by the TCV Funds and has the sole power to direct the voting of its respective shares held by the TCV Funds. Management V, as a general partner of the TCV Funds, may also be deemed to have the sole power to dispose or direct the disposition of the shares and held by the TCV Funds and have the sole power to direct the vote of the shares held by the TCV Funds. Management V disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Each of the Members is a Class A member of Management V. Under the operating agreement of Management V, the Members have the shared power to dispose or direct the disposition of the shares held by TCV Funds and the shared power to direct the vote of the shares held by the TCV Funds. Each of the Members disclaims beneficial ownership of the securities owned by TCV Funds except to the extent of their pecuniary interest therein.

The Reporting Persons may be deemed to be acting as a group in relation to their respective holdings in the Company but do not affirm the existence of any such group.

(c) Except as set forth in this Item 5(a) — (b), each of the Reporting Persons disclaims beneficial ownership of any Common Stock owned beneficially or of record by any other Reporting Person.

(d). Not applicable.

(e). Not applicable.

ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER.

REGISTRATION RIGHTS AGREEMENT

Pursuant to the Second Amended and Restated Investors’ Rights Agreement dated December 20, 2004 (the “Rights Agreement”) by and between the Company on the one hand, and TCV Funds and certain other parties on the other hand, the Company agreed to register, to the extent requested by the TCV Funds, shares of capital stock of the Company held by TCV Funds. Such registration rights include rights to request inclusion of the shares held by the TCV Funds in subsequent offerings initiated by the Company as well as to request of registration of

their shares on Forms S-1 and S-2, in all cases subject to certain limitations as set forth in the Rights Agreement. The Company is obligated to pay all expenses (other than underwriting discounts and commissions) incurred in connection with such registrations. The Company has agreed to indemnify the TCV Funds and related persons against certain liabilities under securities laws in connection with the sale of securities under such registrations.

A copy of the Rights Agreement is attached hereto as Exhibit 2 and is incorporated by reference herein.

Except as set forth herein, none of the Reporting Persons has any contracts, arrangements, understandings or relationships (legal or otherwise) with any person with respect to any securities of Company, including but not limited to any contracts, arrangements, understandings or relationships concerning the transfer or voting of such securities, finder’s fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or losses, or the giving or withholding of proxies.

ITEM 7. MATERIAL TO BE FILED AS EXHIBITS.

Exhibit 1 Joint Filing Agreement

Exhibit 2 Second Amended and Restated Investors’ Rights Agreement dated December 20, 2007 (incorporated by reference from Exhibit 10.1 to the TechTarget Inc.’s Registration Statement on Form S-1 filed on February 7, 2007)

Exhibit 3 Statement Appointing Designated Filer and Authorized Signatories dated May 9, 2006 (incorporated by reference from Exhibit 3 to the Penson Worldwide Inc.’s form 13D filed on May 24, 2006)

SIGNATURE

After reasonable inquiry and to the best of each of the undersigned’s knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.


Dated: June 1, 2007

TCV V, L.P.

By: /s/ Carla S. Newell

Name: Carla S. Newell
Its: Authorized Signatory

TCV MEMBER FUND, L.P.

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

TECHNOLOGY CROSSOVER MANAGEMENT V, L.L.C.

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

JAY C. HOAG

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

RICHARD H. KIMBALL

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

JOHN L. DREW

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

JON Q. REYNOLDS JR.

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory


WILLIAM J. G. GRIFFITH IV

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

HENRY J. FEINBERG

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

EXHIBIT INDEX

Exhibit 1 Joint Filing Agreement

Exhibit 3 Statement Appointing Designated Filer and Authorized Signatories dated May 9, 2006 (incorporated by reference from Exhibit 3 to the Penson Worldwide Inc.’s form 13D filed on May 24, 2006)

EXHIBIT 1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13D referred to below) on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the common stock, par value $0.001 per share, of TechTarget, Inc., a Delaware corporation, and that this Agreement may be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of the 1st day of June, 2007.


TCV V, L.P.

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

TCV MEMBER FUND, L.P.

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

TECHNOLOGY CROSSOVER MANAGEMENT V, L.L.C.

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

JAY C. HOAG

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

RICHARD H. KIMBALL

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

JOHN L. DREW

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

JON Q. REYNOLDS JR.

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory


WILLIAM J. G. GRIFFITH IV

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory

HENRY J. FEINBERG

By: /s/ Carla S. Newell
Name: Carla S. Newell
Its: Authorized Signatory