T-Mobile US, Inc. — Director's Dealing 2010

Aug 18, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: METROPCS COMMUNICATIONS INC (PCS)
CIK: 0001283699
Period of Report: 2010-08-16

Reporting Person: TA ASSOCIATES INC (Director, See General Remarks)
Reporting Person: TA IX LP (See General Remarks)
Reporting Person: TA ASSOCIATES IX LLC (See General Remarks)
Reporting Person: TA Atlantic & Pacific V L P (See General Remarks)
Reporting Person: TA Associates AP V L.P. (See General Remarks)
Reporting Person: TA / ATLANTIC & PACIFIC IV LP (See General Remarks)
Reporting Person: TA ASSOCIATES AP IV LP (See General Remarks)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-08-16	Common Stock	S	31330	$8.9700	Disposed	17255297	Indirect
2010-08-16	Common Stock	S	14505	$8.9700	Disposed	7986157	Indirect
2010-08-16	Common Stock	S	2785	$8.9700	Disposed	1531571	Indirect
2010-08-17	Common Stock	S	31330	$8.9706	Disposed	17223967	Indirect
2010-08-17	Common Stock	S	14505	$8.9706	Disposed	7971652	Indirect
2010-08-17	Common Stock	S	2785	$8.9706	Disposed	1528786	Indirect
2010-08-18	Common Stock	S	31330	$8.9852	Disposed	17192637	Indirect
2010-08-18	Common Stock	S	14505	$8.9852	Disposed	7957147	Indirect
2010-08-18	Common Stock	S	2785	$8.9852	Disposed	1526001	Indirect

Footnotes

F1: These securities were sold solely by TA IX L.P.

F2: These securities were sold solely by TA Atlantic and Pacific V L.P.

F3: These securities were sold solely by TA/Atlantic and Pacific IV L.P.

F4: These securities are owned solely by TA IX L.P. TA Associates, Inc. is the Manager of TA Associates IX LLC, which is the General Partner of TA IX L.P. Each of TA Associates, Inc. and TA Associates IX LLC may be deemed to have a beneficial interest in shares held by TA IX L.P. and each disclaims beneficial ownership of such shares, except to the extent of its pecuniary interest in such shares which is subject to indeterminable future events.

F5: These securities are owned solely by TA Atlantic and Pacific V L.P. TA Associates, Inc. is the General Partner of TA Associates AP V L.P., which is the General Partner of TA Atlantic and Pacific V L.P. Each of TA Associates, Inc. and TA Associates AP V L.P. may be deemed to have a beneficial interest in shares held by TA Atlantic and Pacific V L.P. and each disclaims beneficial ownership of such shares, except to the extent of its pecuniary interest in such shares which is subject to indeterminable future events.

F6: These securities are owned solely by TA/Atlantic and Pacific IV L.P. TA Associates, Inc. is the General Partner of TA Associates AP IV L.P., which is the General Partner of TA/Atlantic and Pacific IV L.P. Each of TA Associates, Inc. and TA Associates AP IV L.P. may be deemed to have a beneficial interest in shares held by TA/Atlantic and Pacific IV L.P. and each disclaims beneficial ownership of such shares, except to the extent of its pecuniary interest in such shares which is subject to indeterminable future events.

F7: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TA Associates, Inc. on March 3, 2010 and amended on March 12, 2010.