Document:

Exhibit 10.4

                            EQUITY PURCHASE AGREEMENT
                              (for TeleCorp Shares)

          This EQUITY PURCHASE AGREEMENT, dated as of December 22, 2000, among
Gerald T. Vento ("Vento") and Thomas H. Sullivan ("Sullivan" and, together with
Vento, the "Sellers") and AT&T Wireless Services, Inc, a Delaware corporation
(the "Buyer").

          Whereas, the Sellers in the aggregate own, in the amounts set forth
opposite their names on Schedule I, shares (the "TeleCorp Shares")of capital
stock of TeleCorp PCS, Inc, ("TeleCorp"), and the Buyer wishes to purchase the
same.

          Now, therefore, the parties agree as follows:

          1. Definitions

          "Affiliate" means, with respect to any Person, any other Person that
directly, or indirectly through one or more intermediaries, controls, is
controlled by or is under common control with that Person. For purposes of this
definition, "control" (including the terms "controlling" and "controlled") means
the power to direct or cause the direction of the management and policies of a
Person, directly or indirectly, whether through the ownership of securities or
partnership or other ownership interests, by contract or otherwise.

          "Average Last Trade Price" means the average last sale price for the
20 consecutive trading days ending three trading days immediately before later
of (i) the day that the Qualifying Stock Notice is given to the Sellers and (ii)
the day that is 20 calendar days before the Second Closing (such later day, the
"Price Day"), which price shall be adjusted as appropriate for stock splits,
stock dividends, recapitalizations, mergers and similar transactions and for
ex-dividend trading.

          "Buyer" has the meaning set forth in the Preamble.

          "Consent" means any consent and approval of a Governmental Authority
or other third party necessary to authorize, approve or permit the parties
hereto to consummate the Transactions and for the Buyer to operate its business
after the closing of the Transactions.

          "Courts" has the meaning set forth in Section 4(g).

          "FCC" means the Federal Communications Commission or similar
regulatory authority established in replacement thereof.
<PAGE>

          "FCC Law" means the Communications Act of 1934, as amended, including
as amended by the Telecommunications Act of 1996, and the rules, regulations and
policies promulgated thereunder.

          "Governmental Authority" means a Federal, state or local court,
legislature, governmental agency (including, without limitation, the United
States Department of Justice), commission or regulatory or administrative
authority or instrumentality.

          "HSR Act" means the Hart-Scott-Rodino Antitrust Improvements Act of
1976, as amended.

          "Law" means applicable common law and any statute, ordinance, code or
other law, rule, permit, permit condition, regulation, order, decree, technical
or other standard, requirement or procedure enacted, adopted, promulgated,
applied or followed by any Governmental Authority.

          "license" means a license, permit, certificate of authority, waiver,
approval, certificate of public convenience and necessity, registration or other
authorization, consent or clearance to construct or operate a facility,
including any emissions, discharges or releases therefrom, or to transact an
activity or business, to construct a tower or to use an asset or process, in
each case issued or granted by a Governmental Authority.

          "Lien" means, with respect to any asset, any mortgage, lien, pledge,
charge, security interest, right of first refusal or right of others therein, or
encumbrance of any nature whatsoever in respect of such asset, except for a Lien
created by this Agreement, a Lien in favor of the Buyer or any Affiliate thereof
or a Lien arising out of the Securities Act of 1933, as amended.

          "Material Adverse Effect" means a material adverse effect on the
business, financial condition, assets, liabilities or results of operations of
the Person specified.

          "Person" means an individual, corporation, partnership, limited
liability company, association, joint stock company, Governmental Authority,
business trust, unincorporated organization, or other legal entity.

          "Purchase Price" means $21.00 per TeleCorp Share.

          "Qualifying Stock" means any duly authorized, validly issued, fully
paid and non-assessable equity security of a class that (i) is listed on the New
York Stock Exchange, the American Stock Exchange or the NASDAQ National Market,
(ii) traded every day during the 20 consecutive trading day-period preceding the
Price Day, and had average daily trading volume during that period of at least
2,000,000 shares and an Average Last Trade Price of at least $10 per share,
(iii) has been duly authorized and validly issued and is fully paid and
nonassessable and (v) either (A) the resale thereof is the subject of an
effective registration statement or (B) such Qualifying Stock is not a
"restricted security" as defined in Rule 144 under the Securities Act of 1933,
as amended and, to the best of

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Buyer's knowledge the Seller is not an Affiliate of the issuer of the Qualifying
Stock (except by virtue of Seller's ownership of such issuer's stock).

          "Qualifying Stock Notice" has the meaning set forth in Section 2(ii).

          "Related Person" means, with respect to any Person, such Person's
spouse, parents, siblings and children and such Person's spouse's parents,
siblings and children.

          "Sellers" has the meaning set forth in the Preamble.

          "Sullivan" has the meaning set forth in the Preamble.

          "Tax" or "Taxes" means any Federal, state, local or foreign tax, fee
or other like assessment or charge of any kind, including any net income,
alternative or add-on minimum tax, gross income, gross receipts, sales, use, ad
valorem, value-added, transfer, franchise, profits, license, withholding on
amounts paid by the taxpayer, payroll, employment, excise, severance, stamp,
capital stock occupation, property, environmental or windfall tax, premium,
custom, duty or other tax of any kind whatsoever, including any interest,
penalty or addition thereto.

          "TeleCorp" has the meaning set forth in the recitals.

          "TeleCorp Shares" has the meaning set forth in the recitals.

          "TeleCorp Management Agreement" means that certain Management
Agreement dated as of November 1, 2000 between TeleCorp Management Corp., Inc.
and TeleCorp.

          "TeleCorp Stockholders Agreement" means that certain Stockholders'
Agreement dated as of November 13, 2000 by and among BUYER, TeleCorp and the
other TeleCorp stockholders named therein.

          "Transactions" means the transactions contemplated by this Agreement.

          "Vento" has the meaning set forth in the Preamble.

          2. Purchase and Sale

          (i) Upon the terms and subject to the conditions hereof, the closing
of the Transactions (the " Closing") shall take place at the offices of Friedman
Kaplan Seiler & Adelman LLP, 875 Third Avenue, New York, New York at 10:00 a.m.
local time on the earlier of (x) January 2, 2002 and (y) three business days
following notice from the Buyer, but no earlier than the fifth business day
following the date of receipt or waiver of the last Consent required by Section
5(a), or at such other place and/or time and/or on such other date as the
parties may agree or as may be necessary to permit the fulfillment or waiver of
the conditions set forth in Section 5 (the "Closing Date").

          (ii) At the Closing, subject to the conditions hereof, (A) the Sellers
shall sell the TeleCorp Shares to the Buyer by delivering to the Buyer one or
more

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<PAGE>

certificates representing in the aggregate the TeleCorp Shares, accompanied by
stock powers duly executed in blank, and (B) the Buyer shall buy the TeleCorp
Shares from the Sellers by delivering to the Sellers the Purchase Price for each
TeleCorp Share delivered to the Buyer at the Closing, payable at the option of
the Buyer in any combination of cash by wire transfer of immediately available
funds, or subject to the written notice (the "Qualifying Stock Notice") by the
Buyer at least twenty (20) calendar days prior to the Closing, Qualifying Stock
valued at its Average Last Trade Price before the Closing.

          (iii) The parties shall execute and deliver or cause to be executed
and delivered all other documents, instruments, and certificates contemplated by
this Agreement to be delivered at the Closing or necessary and appropriate in
order to consummate the Transactions contemplated to be consummated at the
Closing.

          3. Closing Conditions

          The obligation of the Buyer to consummate the Transactions
contemplated to occur at the Closing shall be conditioned on the following,
unless waived by the Buyer:

          (a) Regulatory Approvals

          The obligation of each of the parties to consummate the transactions
contemplated to occur at the Closing shall be subject to the condition precedent
that all required Consents, if any, from any Governmental Authority shall have
been obtained by final non-appealable order. If any regulatory approval is
required for the Closing, an application for such regulatory approval shall be
filed no later than January 31, 2001 and the Closing with respect thereto shall
occur at the time provided in Section 2. If such approvals are denied by a final
non-appealable order, or are not obtained before January 2, 2002, then
notwithstanding the lack of a final non-appealable order, Buyer shall pay to the
Sellers the Closing Price on January 2, 2002 and thereafter the Sellers shall
transfer the TeleCorp Shares that were to have been transferred at the Closing
to a trust created for that purpose within five business days following the
receipt of all required regulatory approvals therefor (and the Sellers shall use
their reasonable best efforts to assist in obtaining such approvals). As used
herein, "final non-appealable order" when referring to an order of the FCC shall
mean a preliminary grant which is not reversed, stayed, enjoined, set aside,
annulled, or suspended within the deadline, if any, provided by applicable
statute or regulation, and with respect to which no timely request for stay,
motion or petition for reconsideration or rehearing, application or request for
review, or notice of appeal or other judicial petition for review is pending,
and as to which the time for filing any such request, motion, petition,
application, appeal, or notice, and for the entry of an order staying,
reconsidering, or reviewing on the FCC's or other regulatory authority's own
motion, has expired and which preliminary grant is not subject to conditions
that in the aggregate would have a material adverse effect on the Buyer.

          (b) Title, Liens, etc.

          The obligation of the Buyer to consummate the transactions
contemplated to occur at the Closing shall be subject to the condition (unless
waived by the Buyer) that

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<PAGE>

each Seller transferring TeleCorp Shares (i) is the sole beneficial and record
owner thereof and has good and marketable title thereto free and clear of all
Liens and (ii) has full power and authority to sell the TeleCorp Shares without
conflict with the terms of any material agreement, law, order or instrument
binding upon him. Each Seller shall deliver a written certification that the
foregoing sentence is true on the Closing Date together with such customary
instruments of assignment with respect to the transfers as the Buyer shall
reasonably request, including certificates evidencing the TeleCorp Shares,
accompanied by stock powers duly executed in blank,.

          Notwithstanding anything in Section 5(b) to the contrary, the Buyer
shall be obligated to consummate the transactions contemplated to occur at the
Closing regardless of (A) the bankruptcy of TeleCorp that results in the
cancellation of any TeleCorp Shares or (B) a default or an "event of default"
under an agreement for borrowed money that results in any TeleCorp Shares being
foreclosed upon by the Buyer or any of its respective Affiliates, provided such
bankruptcy, default or foreclosure is not:

          (x) the result of fraud, knowing and willful misconduct or bad faith
by a Seller or an Affiliate of a Seller, or

          (y) due to a willful and knowing breach by a Seller or an Affiliate of
a Seller under any Approved Instrument;

and further provided that if a Seller or an Affiliate of a Seller or a Related
Person of a Seller directly or indirectly derives any value arising out of
TeleCorp Shares so cancelled or foreclosed, then such value shall be transferred
to the Buyer as a condition precedent to the payment of the Purchase Price at
the Closing.

          As used herein, "Approved Instrument" means the organizational
documents of TeleCorp or any agreement to which TeleCorp, a Seller or an
Affiliate of a Seller is a party.

          (c) Qualifying Stock

          If the Buyer elects to deliver Qualifying Stock to a Seller in payment
of some or all of the Purchase Price, then the obligation of such Seller to
consummate the transactions contemplated to occur at the Closing shall be
subject to the condition that such Qualifying Stock has been duly authorized and
validly issued and is fully paid and nonassessable and either (i) the resale
thereof is the subject of any effective registration statement or (ii) such
Qualifying Stock is not a "restricted security" as defined in Rule 144 under the
Securities Act of 1933, as amended and, to the best of its knowledge the Seller
is not an Affiliate of the issuer of the Qualifying Stock (except by virtue of
Seller's ownership of such issuer's stock). The Buyer shall deliver a written
certification that the foregoing sentence is true on the date of the Closing.

          (d) Cross Closing

      The obligation of the Buyer to consummate the transactions contemplated to
occur at the Closing shall be subject to the condition (unless waived by the
Buyer) that

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<PAGE>

the Sellers have not failed to consummate the transactions contemplated to occur
under those certain Equity Purchase Agreements dated the date hereof among the
Sellers and certain parties related to the Sellers and Cascade Wireless, LLC in
breach of their obligation to do so in accordance with those Agreements (so long
as the Buyer was or is not in breach of any such Agreement and was or is ready,
willing and able to close thereunder).

          4. Miscellaneous

          (a) This Agreement including the exhibits and schedules hereto and the
certificates and instruments delivered pursuant to the terms of this Agreement,
as the cases may be, embodies the entire agreement and understanding of the
parties hereto in respect of the Transactions. There are no restrictions,
promises, representations, warranties, covenants or undertakings, other than
those expressly set forth or referred to herein. This Agreement supersedes all
prior agreements and understandings between the parties with respect to such
Transactions.

          (b) This Agreement may be amended, modified, supplemented or waived
only by written agreement of each of the parties.

          (c) This Agreement is binding upon and is solely for the benefit of
the parties hereto and their respective permitted successors, legal
representatives and permitted assigns. No party may assign its rights and
obligations hereunder without the prior written consent of the other parties,
and any purported assignment without such consent shall be void.

          (d) Any failure of any of the parties to comply with any obligation,
covenant, agreement or condition herein may be waived by the party entitled to
the benefits thereof only by a written instrument signed by the party granting
such waiver, but such waiver or failure to insist upon strict compliance with
such obligation, covenant, agreement or condition shall not operate as a waiver
of, or estoppel with respect to, any subsequent or other failure. Whenever this
Agreement requires or permits consent by or on behalf of any party hereto, such
consent shall be given in writing in a manner consistent with the requirement
for a waiver of compliance as set forth in this paragraph.

          (e) All rights, powers and remedies provided under this Agreement or
otherwise available in respect hereof at law or in equity shall be cumulative
and not alternative, and the exercise or beginning of the exercise of any
thereof by any party shall not preclude the simultaneous or later exercise of
any other such right, power or remedy by such party.

          (f) All notices, demands or other communications to be given or
delivered under or by reason of the provisions of this Agreement will be in
writing and will be deemed to have been given on the next business day after it
is either (a) delivered personally to the recipient or (b) sent to the recipient
by telecopy (receipt confirmed), reputable overnight next day express courier
service (charges prepaid) or electronic mail

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<PAGE>

(receipt confirmed). Such notices, demands and other communications will be sent
to the Sellers and the Buyer at the addresses indicated below:

     If to Buyer:

            AT&T Wireless Services, Inc.
            7277 164th Avenue, NE
            Redmond, WA  98052
            Attn:  William Hague
            Telephone:  425-580-6000
            Fax:  425-580-8405

     With a copy to:

            AT&T Wireless Services, Inc.
            7277 164th Avenue, NE
            Redmond, WA  98052
            Attn:  General Counsel
            Telephone:  425-580-6000
            Fax:  425-580-8333

                  and

     Friedman Kaplan Seiler & Adelman LLP
            875 Third Avenue
            New York, New York  10022
            Attn: Gary D. Friedman
            Telephone:  (212) 833-1105
            Fax:  (212) 355-6401

     If to any Seller:

            1010 N. Glebe Road
            Suite 800
            Arlington, VA 22201
            Attn:  Thomas H. Sullivan
            Telephone:  703-236-1100
            Fax: 703-236-1376

      With a copy to:

            Cadwalader Wickersham & Taft
            100 Maiden Lane
            New York, NY 10038
            Attn:  Brian Hoffmann
            Telephone: 212-504-6000
            Fax:  212-504-6666

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<PAGE>

or to such other address as either party hereto may, from time to time,
designate in writing delivered in a like manner.

          (g) THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE
WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT GIVING EFFECT TO THE CONFLICTS OF
LAW PRINCIPLES THEREOF. THE PARTIES HERETO HEREBY IRREVOCABLY AND
UNCONDITIONALLY CONSENT TO SUBMIT TO THE NON-EXCLUSIVE JURISDICTION OF THE
COURTS OF THE STATE OF NEW YORK AND OF THE UNITED STATES OF AMERICA LOCATED IN
THE CITY OF NEW YORK (THE "COURTS") FOR ANY LITIGATION ARISING OUT OF OR
RELATING TO THIS AGREEMENT AND THE TRANSACTIONS, WAIVE ANY OBJECTION TO THE
LAYING OF VENUE OF ANY SUCH LITIGATION IN THE COURTS AND AGREE NOT TO PLEAD OR
CLAIM IN ANY COURT THAT SUCH LITIGATION BROUGHT THEREIN HAS BEEN BROUGHT IN AN
INCONVENIENT FORUM.

          (h) This Agreement may be executed in two or more counterparts, each
of which shall be deemed to be an original, but all of which together shall
constitute one and the same instrument.

          (i) The article and section headings contained in this Agreement are
for convenience of reference only, are not part of the agreement of the parties
and shall not affect in any way the meaning or interpretation of this Agreement.
All pronouns and any variations thereof shall be deemed to refer to the
masculine, feminine or neuter, singular or plural, as the identity of the
antecedent Person or Person may require.

          (j) All press releases, notices to customers and suppliers and other
announcements with respect to this Agreement and the Transactions, as well as
any statements (whether written or oral) made to the FCC with respect to this
Agreement and the Transactions, shall be approved by both the Sellers and the
Buyer prior to issuing any such announcement or making any such statement,
provided that either party may make any public disclosure it believes in good
faith is required by law or regulation (in which case the disclosing party will
use its best efforts to advise the other party prior to making such disclosure
and provide the other party an opportunity to review the proposed disclosure).

          (k) The parties hereto agree that irreparable damage would occur in
the event that any of the provisions of this Agreement were not performed in
accordance with their specific terms or were otherwise breached. It is
accordingly agreed that the parties shall be entitled to an injunction or
injunctions to prevent breaches of this Agreement and to enforce specifically
the terms and provisions hereof in any Court.

          (l) All per share prices and all numbers and types of shares referred
to herein shall be appropriately adjusted for stock splits, stock dividends,
recapitalizations and similar transactions.

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<PAGE>

                            [Signature page follows]

                                       9

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the date first above written.

                                    AT&T WIRELESS SERVICES, INC.

                                    By:
                                       -----------------------------
                                    Name:
                                    Title:

                                    ----------------------------------
                                    GERALD T. VENTO

                                    ----------------------------------
                                    THOMAS H. SULLIVAN

<PAGE>

                                   Schedule I

                                 TELECORP SHARES

-----------------------------------------------------------------------
               Series C    Series E Preference      Class A Common
              Preference

-----------------------------------------------------------------------
   Vento         490               6,450               1,339,602
-----------------------------------------------------------------------
 Sullivan        108               4,009                 896,064
-----------------------------------------------------------------------
   Total         598              10,459               2,235,666
-----------------------------------------------------------------------Exhibit 10.5

                              PUT RIGHTS AGREEMENT

          THIS AGREEMENT, dated as of December 22, 2000, among AT&T Wireless
Services, Inc., a Delaware corporation (the "Buyer") on the one hand and Gerald
T. Vento ("Vento") and Thomas H. Sullivan ("Sullivan" and together with Vento,
the "Sellers") on the other hand

                              W I T N E S S E T H:
                              - - - - - - - - - -

          WHEREAS Sullivan owns the Sullivan Shares (as defined) and

          WHEREAS Vento owns the Vento Shares (as defined) and

          WHEREAS Sellers wish to have the right to sell the TeleCorp Shares (as
defined) to the Buyer for the Put Price;

          NOW THEREFORE the parties hereto agree as follows in return for the
respective promises and subject to the terms and conditions set forth below.

          Section 2. Definitions.

          "Average Last Trade Price" at any Closing means the average last sale
price for the twenty (20) consecutive trading days ending three (3) trading days
immediately before the Closing, which price shall be adjusted as appropriate for
stock splits, stock dividends, recapitalizations, mergers and similar
transactions and for ex-dividend trading.

          "Exercise Period" means the period that commences on the Put Date and
expires on July 31, 2005, except that if a Price Interval has occurred before
July 31, 2004, then the Exercise Period shall expire on July 31, 2004, and if a
Price Interval first occurs after July 31, 2004 but before July 21, 2005, then
the Exercise Period shall expire ten days after the last day of the first Price
Interval to occur.

          "Lien" means any mortgage, lien, pledge, charge, security interest,
right of first refusal or other right of others therein, or encumbrance of any
nature whatsoever.

          "Management Agreement" means that certain Management Agreement between
TeleCorp Management Corp., Inc. and TeleCorp dated as of November 1, 2000.

          "Price Interval" means a period of twenty (20) consecutive trading
days during which the average last sale price for TeleCorp Class A Common Stock
is at least $16.30 (which price shall be adjusted as appropriate for stock
splits, stock dividends, recapitalizations, mergers and similar transactions and
for ex-dividend trading).

                                        1

<PAGE>

          "Qualifying Stock" means fully paid and nonassessable shares of AT&T
Wireless Tracking Stock (or any successor security that is publicly traded and
the average daily trading volume of which has been at least two million shares
during the 30-day period before issuance to the Sellers) that (a) provided a
Seller is not an Affiliate of the issuer of such shares or is an Affiliate of
such issuer solely because of his beneficial ownership of the capital stock of
such issuer, are not "restricted securities" as defined in Rule 144 under the
Securities Act of 1933 or (b) with respect to the resale of which a registration
statement has been declared effective.

          "Put Date" means August 1, 2003.

          "Put Price" means the product of the number of Put Shares and the
lesser of (i) the Average Last Trade Price of TeleCorp Shares before the Closing
at which they are to be sold to the Buyer and (ii) $18.30 (which price shall be
adjusted for stock splits, stock dividends, recapitalizations, mergers and
similar transactions.

          "Put Shares" means that number of TeleCorp Shares that Sullivan or
Vento cause the Buyer to purchase pursuant to Section 3 hereof.

          "Sullivan Shares" means up to 2,003,901 shares of TeleCorp Class A
Common Stock that (i) are owned by Sullivan on the date hereof and (ii) will not
be subject to repurchase by TeleCorp pursuant to Section 7 of the Management
Agreement on the Put Date.

          "TeleCorp Shares" means the Sullivan Shares and the Vento Shares.

          "TeleCorp" means TeleCorp PCS, Inc., a Delaware corporation, or any
successor thereof.

          "Vento Shares" means 2,917,988 shares of TeleCorp Class A Common Stock
that (i) are owned by Vento on the date hereof and (ii) will not be subject to
repurchase by TeleCorp pursuant to Section 7 of the Management Agreement on the
Put Date.

          Section 3. The Put.

          At any time during the Exercise Period, each of Sellers may elect,
each on one occasion only, to cause the Buyer to purchase (which purchase shall
be subject to the condition, which may be waived by the Buyer in its discretion,
that the representations and warranties required to be delivered to the Buyer
pursuant to Section 4.2 are all true at the time of such purchase) his
respective Put Shares, for an aggregate price equal to the Put Price, which may
be paid at Buyer's option in any combination of cash or Qualifying Stock valued
at the Average Last Trade Price of the Qualifying Stock before the Closing when
it will be issued. In order to exercise the election referred to above, Sellers
(or either of them, if he is the only one electing to cause the Buyer to
purchase Put Shares pursuant to this Section 2) must deliver written notice
thereof to the Buyer, which notice must be received by the Buyer during the
Exercise Period. Such notice shall be irrevocable upon receipt by the Buyer.

                                        2

<PAGE>

          Section 4. Notices.

          Any notice hereunder shall be deemed received by the addressee thereof
(i) on the day that it is actually received by the addressee or sent to the
addressee by fax to the fax number set forth below or (ii) on the next business
day following the day it is delivered to a reputable courier service for
next-day delivery to the addressee at the address set forth below. Addresses and
fax numbers are set forth below for:

            The Buyer:

                  AT&T Wireless Services, Inc.
                  7277 - 164th Avenue NE
                  Redmond, WA  98052
                  Attn: William Hague
                  Fax:  (425) 580-8405

            with copies to:

                  AT&T Wireless Services, Inc.
                  7277 - 164th Avenue NE
                  Redmond, WA  98052
                  Attn: General Counsel
                  Fax:  (425) 580-8333

            and:

                  Friedman Kaplan Seiler & Adelman LLP
                  875 Third Avenue
                  New York, New York 10022
                  Attn: D. Roger Glenn
                  Fax:  212-355-6401

            Sullivan or Vento:

                  1010 N. Glebe Road
                  Suite 800
                  Arlington, Virginia 22201
                  Fax: 703-236-1176

                                        3

<PAGE>

            With a copy to:

                  Cadwalader, Wickersham & Taft
                  100 Maiden Lane
                  New York, New York 10038
                  Attn: Brian Hoffmann
                  Fax:  212-504-6666

          The addresses and fax numbers set forth above may be amended by notice
delivered as aforesaid by the amending party to the other parties and shall be
effective upon deemed receipt thereof by the other parties.

          Section 5. Closings.

          5.1 After the receipt of a notice pursuant to Section 2 hereof by the
requisite persons named therein to receive notice, the parties hereto shall use
reasonable best efforts including reasonable best efforts to obtain all required
regulatory approvals, to consummate such closing (each a "Closing") of the
purchase of TeleCorp Shares, as appropriate, as soon as practicable and in any
event within five business days after such receipt if no regulatory approval is
required. Buyer shall give notice to Sellers within ten business days of receipt
of a notice pursuant to Section 2 hereof of the portion (by dollar value) of the
purchase price that will consist of Qualifying Stock. If any regulatory approval
is required, an application for such regulatory approval shall be filed no later
than 15 days following the date of such receipt and the Closing with respect
thereto shall occur no later than five business days following the receipt of
all required regulatory approvals by final nonappealable order. Any closing
shall be subject to the condition precedent that all required consents or
approvals from any governmental entity shall have been obtained by final
nonappealable order. As used herein, "final nonappealable order" when referring
to an order of the FCC shall mean a preliminary grant which is not reversed,
stayed, enjoined, set aside, annulled, or suspended within the deadline, if any,
provided by applicable statute or regulation, and with respect to which no
timely request for stay, motion or petition for reconsideration or rehearing,
application or request for review, or notice of appeal or other judicial
petition for review is pending, and as to which the time for filing any such
request, motion, petition, application, appeal, or notice, and for the entry of
an order staying, reconsidering, or reviewing on the FCC's or other regulatory
authority's own motion, has expired and which preliminary grant is not subject
to conditions that in the aggregate would have a material adverse effect on the
Buyer.

          5.2 At the Closing, each Seller transferring TeleCorp Shares shall
represent and warrant to the Buyer in writing (i) that he is the sole beneficial
and record owner thereof and has good and marketable title thereto free and
clear of all Liens (other than Liens (a) arising out of this Agreement or (b)
arising out of the Securities Act of 1933, as amended) and (ii) that he has full
power and authority to sell the TeleCorp Shares without conflict with the terms
of any material agreement, law, order or instrument binding upon him. Each
Seller shall deliver such customary instruments of assignment with respect to
the transfers at the Closing as the Buyer shall reasonably request, including
certificates evidencing the TeleCorp Shares transferred endorsed in blank.

                                        4

<PAGE>
          5.3 If the Buyer elects to deliver Qualifying Stock in accordance with
Section 2, then the Buyer shall give written notice of such fact at least 20
calendar days prior to the Closing and shall represent and warrant to the
recipient thereof in writing that such Qualifying Stock has been duly authorized
and validly issued and is fully paid and nonassessable and either (i) the resale
thereof is the subject of any effective registration statement or (ii) such
Qualifying Stock is not a "restricted security" as defined in Rule 144 under the
Securities Act of 1933, as amended and (iii) to the best of its knowledge the
Seller is not an Affiliate of the issuer of the Qualifying Stock (except by
virtue of Seller's ownership of such issuer's stock.)

          Section 6. Miscellaneous.

          6.1 This Agreement and the other agreements referred to herein and
contemplated hereby, together with any schedules and exhibits hereto and
thereto, contain the entire agreement and understanding of the parties relating
to the subject matter hereof and supersede all prior negotiations, proposals,
offers, agreements and understandings (written or oral) relating to such subject
matter.

          6.2 Neither this Agreement nor any provision hereof may be amended or
modified except in a writing signed by all the parties hereto. No failure or
delay of any party in exercising any power or right hereunder shall operate as a
waiver thereof, nor shall any single or partial exercise of any such right or
power, or any abandonment or discontinuance of steps to enforce any such right
or power, preclude any other further exercise thereof or the exercise of any
other right or power. No waiver by any party of any departure by any other party
from any provision of this Agreement shall be effective unless the same shall be
in a writing signed by the party against which enforcement of such waiver or
consent is sought, and then such waiver or consent shall be effective only in
the specific instance and for the specific purpose for which it was given. No
notice or similar communication by any party to another shall entitle such other
party to any other or further notice or similar communication in similar or
other circumstances, except as specifically provided herein.

          6.3 The parties acknowledge that money damages may not be an adequate
remedy for violations of this Agreement and that any party may, in its sole
discretion, in an arbitration or a court of competent jurisdiction to the extent
permitted hereunder, apply for specific performance or injunctive or other
relief as such arbitration or court may deem just and proper in order to enforce
this Agreement or to prevent violation hereof and, to the extent permitted by
applicable law, each party waives any objection to the imposition of such
relief.

          6.4 All rights, powers and remedies provided under this Agreement or
otherwise available in respect hereof at law or in equity shall, unless
otherwise specifically provided herein, be cumulative and not alternative, and
the exercise or beginning of the exercise of any thereof by a party shall not
preclude the simultaneous or later exercise of any other such right, power or
remedy by such party.

                                        5

<PAGE>

          6.5 This Agreement shall be binding upon and shall inure to the
benefit of the parties and their respective successors and permitted assigns. No
Seller may assign its rights or delegate its duties under this Agreement without
the written consent of the Buyer. The Buyer may assign its rights or delegate
its duties under this Agreement without the consent of any Seller but no such
assignment or delegation shall in and of itself reduce the Buyer's obligations
hereunder.

          6.6 This Agreement is entered into solely for the benefit of the
parties and no person other than the parties, their respective successors and
permitted assigns, may exercise any right or enforce any obligation hereunder.

          6.7 Each party will execute and deliver such further documents and
take such further actions as any other party may reasonably request consistent
with the provisions hereof in order to effect the intent and purposes of this
Agreement.

          6.8 THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE
WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO PRINCIPLES OF
CONFLICTS OF LAW.

          6.9 If any term of this Agreement or the application thereof to any
party or any circumstance shall be held invalid or unenforceable to any extent,
the remainder of this Agreement and the application of such term to the other
parties or circumstances shall not be affected thereby and shall be enforced to
the greatest extent permitted by applicable law.

          6.10  This Agreement does not create a partnership or agency
relationship among the parties, or any other relationship between the parties
except as expressly set forth herein. No party shall have any right or authority
to assume, create or incur any liability or obligation, express or implied, in
the name or on behalf of any other party.

          6.11  This Agreement may be executed in any number of counterparts,
each of which shall be deemed to be an original, but all of which together shall
constitute one instrument.

          6.12  The captions used herein are for convenience of reference only
and shall not affect the interpretation or construction hereof. All pronouns and
any variations thereof shall be deemed to refer to the masculine, feminine,
neuter, singular or plural as the context may require. Unless otherwise
specified, (a) the terms "hereof," "herein" and similar terms refer to this
Agreement as a whole, (b) references herein to Sections refer to sections of
this Agreement and (c) the word "including" connotes the words "including
without limitation" unless the context requires otherwise.

          6.13  If Buyer makes any offer to purchase outstanding shares of
capital stock of TeleCorp, and the Sellers are prevented from accepting such
offer solely because of the restrictions imposed by the Stockholders Agreement,
then the Buyer shall waive its waiveable rights (and cause its Affiliates to
waive their rights) under the Stockholders Agreement to the extent necessary to
allow the Sellers to accept such offer.

                                        6

<PAGE>

      IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Agreement as of the date first above written.

                                    AT&T Wireless Services, Inc.

                                    By:
                                       -------------------------------
                                    Name:
                                    Title:

                                    ----------------------------------
                                    Thomas Sullivan

                                    ----------------------------------
                                    Gerald Vento

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