COMSCORE, INC. — Director's Dealing 2010

Aug 13, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMSCORE, INC. (SCOR)
CIK: 0001158172
Period of Report: 2010-08-11

Reporting Person: ACCEL VII LP (10% Owner)
Reporting Person: ACCEL INVESTORS 99 LP (10% Owner)
Reporting Person: ACCEL INTERNET FUND III LP (10% Owner)
Reporting Person: ACCEL VII ASSOCIATES LLC (10% Owner)
Reporting Person: ACCEL INTERNET FUND III ASSOCIATES LLC (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-08-11	Common Stock	J	1074320	—	Disposed	3222962	Direct
2010-08-11	Common Stock	J	268580	—	Disposed	805741	Indirect
2010-08-11	Common Stock	J	132814	—	Disposed	398442	Indirect
2010-08-11	Common Stock	J	3581	—	Acquired	3581	Indirect

Footnotes

F1: Accel VII Associates L.L.C. ("A7A") is the General Partner of Accel VII L.P. ("A7") and has the sole voting and investment power. James W. Breyer, Arthur C. Patterson, Theresia Gouw Ranzetta, James R. Swartz, and J. Peter Wagner are the Managing Members of A7A and share such powers.

F2: Each general partner or managing member disclaims beneficial ownership except to the extent of their pecuniary interest therein.

F3: These shares were transferred without additional consideration to partners in pro rata distributions pursuant to the partnership agreement of Accel VII L.P.

F4: These shares were transferred without additional consideration to partners in pro rata distributions pursuant to the partnership agreement of Accel Internet Fund III L.P.

F5: Accel Internet Fund III Associates L.L.C. is the General Partner of Accel Internet Fund III L.P. and has the sole voting and investment power. James W. Breyer, Arthur C. Patterson, Theresia Gouw Ranzetta, James R. Swartz, and J. Peter Wagner are the Managing Members of A7A and share such powers.

F6: James W. Breyer, Arthur C. Patterson, Theresia Gouw Ranzetta, James R. Swartz, and J. Peter Wagner are the General Partners of Accel Investors '99 L.P. and therefore share the voting and investment powers.

F7: These shares were transferred without additional consideration to partners in pro rata distributions pursuant to the partnership agreement of Accel Investors '99 L.P.