Document:

EX-4.10

EXHIBIT 4.10

USEC Inc.

Non-Employee Director Restricted Stock Award Agreement

(Annual Retainers and Meeting Fees)

RESTRICTED STOCK AWARD AGREEMENT (the “Agreement”) dated as of      between USEC
Inc., a Delaware corporation (the “Company”) and      (the “Participant”):

R E C I T A L S:

The Company has adopted the USEC Inc. 1999 Equity Incentive Plan (the “Plan”), which Plan is
incorporated herein by reference and made a part of this Agreement. Capitalized terms not
otherwise defined herein shall have the same meanings as in the Plan.

The Committee has determined that it is in the best interests of the Company and its
shareholders to grant the restricted stock awards provided for herein to the Participant pursuant
to the Plan and the terms set forth herein to further align the interests of non-employee directors
of the Company to the interests of shareholders.

This Agreement shall apply to certain stock awards made prior to the date hereof and to
certain stock awards made from time to time following the date hereof, in each case representing
Participant’s annual retainers and meeting fees as set forth on Exhibit A hereto as such
Exhibit A may be augmented from time to time.

NOW THEREFORE, in consideration of the mutual covenants hereinafter set forth, the parties
hereto agree as follows:

1. Grant of the Award. (a) The Company has granted and from time to time will grant
to the Participant Awards (the “Awards”) of Shares of Restricted Stock (the “Restricted Shares”) in
the amounts, on the dates of grant, and labeled as annual retainers and meeting fees, in
each case as set forth in Exhibit A hereto, subject to the terms and conditions set forth in this
Agreement and the Plan. Subject to Section 3, certificates evidencing the Restricted Shares shall
be issued by the Company and registered in the name of the Participant on the stock transfer books
of the Company. However, certificates issued with respect to Restricted Shares shall be held by
the Company in escrow under the terms hereof. Such certificates shall bear the legend set forth in
Subsection (c) below or such other appropriate legend as the Committee shall determine, which
legend shall be removed only if and when the Restricted Shares vest as provided herein, at which
time the certificates shall be delivered to the Participant. If requested by the Company and as a
condition to the issuance of the Restricted Shares, the Participant will be required to deliver to
the Company stock powers duly endorsed in blank. Upon the issuance of the Restricted Shares, the
Participant shall be entitled to vote the Restricted Shares, and shall be entitled to receive, free
of all restrictions, ordinary cash dividends and dividends in the form of Shares thereon. The
Participant’s right to receive any extraordinary dividends or other distributions with respect to
Restricted Shares prior to their becoming nonforfeitable shall be at the sole discretion of the
Committee, but in the event of any such extraordinary event, the Committee shall take such action
as is appropriate to preserve the value of, and prevent the unintended enhancement of the value of,
the Restricted Shares.

(b) In order to comply with any applicable securities laws, the Company may require the
Participant (i) to furnish evidence satisfactory to the Company (including a written and signed
representation letter) to the effect that the Restricted Shares were acquired for investment only
and not for resale or distribution and (ii) to agree that the Restricted Shares shall only be sold
by the Participant following registration under the Securities Act of 1933, as amended, or pursuant
to an exemption therefrom.

(c) Unless otherwise determined by the Committee, any certificate issued in respect of the
Restricted Shares prior to the lapse of any outstanding restrictions relating thereto shall bear
the following legend:

“This certificate and the shares of stock represented hereby are
subject to the terms and conditions, including the forfeiture
provisions and restrictions against transfer (the “Restrictions”),
contained in the USEC Inc. 1999 Equity Incentive Plan (the “Plan”)
and an agreement entered into between the registered owner and the
Company (the “Agreement”). Any attempt to dispose of these shares
in contravention of the applicable restrictions, including by way
of sale, assignment, transfer, pledge, hypothecation or otherwise,
shall be null and void and without effect.”

2. Vesting. Subject to Section 3 hereof, the restrictions on transfer of the
Restricted Shares shall lapse and the Restricted Shares shall become vested and nonforfeitable on
the later to occur of the first anniversary of the Date of Grant or the termination of the
Participant’s service as a member of the Board.

3. Termination of Service. (a) In the event that the Participant’s service with the
Company is terminated for Cause or by the Participant voluntarily before the end of the
Participant’s term (except by reason of Retirement), all Restricted Shares held by the Participant
as of the date of such termination shall be canceled and forfeited for no consideration on the date
of the Participant’s termination of service.

(b) In the event that the Participant’s service with the Company is terminated for any reason
not described in Section 3(a) hereof, unless the Committee provides otherwise at the time of
termination, all Restricted Shares held by the Participant as of the date of such termination shall
become vested and nonforfeitable.

4. Change in Control. Upon a Change in Control of the Company, the unvested portion
of the Restricted Shares shall become vested and nonforfeitable.

5. Nontransferability. The Restricted Shares are not nontransferable and may not be
sold, assigned, transferred, disposed of, pledged or otherwise encumbered by the Participant, other
than by will or the laws of descent and distribution until such Restricted Shares become
nonforfeitable in accordance with the provisions of this Agreement. Any Participant’s successor (a
“Successor”) shall take rights herein granted subject to the terms and conditions hereof. No such
transfer of the Restricted Shares to any Successor shall be effective to bind the Company unless
the Company shall have been furnished with written notice thereof and a copy of such evidence as
the Committee may deem necessary to establish the validity of the transfer and the acceptance by
such Successor of the terms and conditions hereof.

6. No Right to Continued Service. Neither the Plan nor this Agreement shall confer
on the Participant any right to continued service with the Company

7. Withholding. The Participant shall pay to the Company promptly upon request, and
in any event at the time the Participant recognizes taxable income in respect of the Restricted
Shares, an amount equal to the taxes the Company determines it is required to withhold, if any,
under applicable tax laws with respect to the Restricted Shares. Such payment shall be made in the
form of cash, Shares already owned or otherwise issuable upon the lapse of restrictions, or in a
combination of such methods, as irrevocably elected by the Participant prior to the applicable tax
due date with respect to such Restricted Shares. The Participant shall promptly notify the Company
of any election made pursuant to Section 83(b) of the Code.

8. Governing Law. This Agreement shall be governed by and construed in accordance
with the laws of the State of Delaware, without regard to the conflicts of laws provisions thereof.

9. Amendments. This Agreement may be amended or modified at any time by an
instrument in writing signed by the parties hereto.

10. Notices. Any notice, request, instruction or other document given under this
Agreement shall be in writing and shall be addressed and delivered, in the case of the Company, to
the Secretary of the Company at the principal office of the Company and, in the case of the
Participant, to the Participant’s address as shown in the records of the Company or to such other
address as may be designated in writing by either party.

11. Awards Subject to Plan; Amendments to Awards. These Awards are subject to the
Plan. The terms and provisions of the Plan as it may be amended from time to time are hereby
incorporated herein by reference. In the event of a conflict between any term or provision
contained herein and a term or provision of the Plan, the applicable terms and provisions of the
Agreement will govern and prevail.

12. Counterparts. This Agreement may be executed in two or more counterparts, each
of which shall be an original but all of which together shall represent one and the same agreement.

1

IN WITNESS WHEREOF, the parties hereto have executed this Agreement. By execution of this
Agreement, the Participant acknowledges receipt of a copy of the Plan.

USEC Inc.

By ___________________________

_____________________________

2EX-10.77

EXHIBIT 10.77

SUMMARY SHEET FOR NON-EMPLOYEE DIRECTOR COMPENSATION

The following table sets forth the compensation for USEC’s non-employee directors for the term
commencing at the annual meeting of shareholders held on April 21, 2005:

	 	 	 
	Annual Retainer

	 	$65,000 paid at the beginning of the service

year. At least 50% of the retainer is paid

in the form of restricted stock or

nonqualified stock options, although a

director may elect to receive a greater

proportion of the retainer in restricted

stock or options.
	 
	 	 
	Annual Stock Grant

	 	Annual grant of restricted stock valued at

$30,000 granted at the time the annual

retainer is paid. Restricted stock vests on

the later of one year from the date of grant

or the director’s termination of service.
	 
	 	 
	Annual Option Grant

	 	Annual grant of 3,500 stock options granted

at the time the annual retainer is paid.

Options vest after 12 months.
	 
	 	 
	Committee Chairman Fees

	 	$5,000 annual fee for committee chairman

paid in cash, shares of restricted stock or

options, at the director’s election, at the

time the annual retainer is paid.
	 
	 	 
	Board Meeting Fees

	 	$1,500 for each Board of Directors meeting

attended. Meeting fees are paid in cash in

the week following the meeting or, at the

director’s election, in restricted stock in

the month following each meeting.
	 
	 	 
	Committee Meeting Fees

	 	$1,000 for each committee meeting attended.

Meeting fees are paid in cash in the week

following the meeting or, at the director’s

election, in restricted stock in the month

following each meeting.
	 
	 	 
	Incentive Stock

	 	If a director chooses to receive restricted

stock as payment for the part of the annual

retainer, chairman and meeting fees that

they are otherwise entitled to receive in

cash, he or she will receive an incentive

payment of restricted stock equal to 20% of

the portion of the annual retainer, chairman

and meeting fees that the director elects to

take in restricted stock in lieu of cash.

These incentive shares will vest on the

later of three years from the date of grant

or the director’s termination of service.

Incentive shares are granted at the time the

annual retainer is paid.

All restricted stock and options are granted pursuant to the USEC Inc. 1999 Equity Incentive
Plan, as amended, and are subject to the terms of such plan and the applicable stock option or
restricted stock award agreements previously approved for issuance of options and restricted stock
to non-employee directors under the plan. Restricted stock carries the right to receive dividends
and the right to vote.

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