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

Oct 22, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: METROPCS COMMUNICATIONS INC (PCS)
CIK: 0001283699
Period of Report: 2010-10-20

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
2010-10-20	Common Stock	S	31330	$10.6329	Disposed	15035441	Indirect
2010-10-20	Common Stock	S	14505	$10.6329	Disposed	6958652	Indirect
2010-10-20	Common Stock	S	2785	$10.6329	Disposed	1334788	Indirect
2010-10-21	Common Stock	S	27695	$10.5902	Disposed	15007746	Indirect
2010-10-21	Common Stock	S	12822	$10.5902	Disposed	6945830	Indirect
2010-10-21	Common Stock	S	2462	$10.5902	Disposed	1332326	Indirect
2010-10-22	Common Stock	S	31330	$10.5548	Disposed	14976416	Indirect
2010-10-22	Common Stock	S	14505	$10.5548	Disposed	6931325	Indirect
2010-10-22	Common Stock	S	2785	$10.5548	Disposed	1329541	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 August 23, 2010.