Document:

<Page>

                                                                 Exhibit 10.2(b)

NON-QUALIFIED STOCK OPTION AGREEMENT               _____ SHARES OF COMMON STOCK,
NO.                                                $.0001 PAR VALUE PER SHARE

                           SYNTA PHARMACEUTICALS CORP.

                             _________________, 2005

     As of _________ (the "Grant Date"), Synta Pharmaceuticals Corp. (the
"Company"), a Delaware corporation, grants to _______________ (the
"Participant") the right and option (the "Option") to purchase up to _________
shares of the Common Stock, $.0001 par value per share, of the Company (the
"Shares") at a purchase price of $________ per share (the "Purchase Price") and
on the terms and subject to the conditions set forth in the Company's 2005 Stock
Plan (the "Plan"), United States securities and tax laws and this Agreement.

     THIS AGREEMENT DOES NOT SET FORTH ALL OF THE TERMS AND CONDITIONS OF THE
PLAN, WHICH IS HEREBY INCORPORATED INTO AND MADE A PART OF THIS AGREEMENT BY
REFERENCE. ANY TERMS USED AND NOT DEFINED HEREIN HAVE THE SAME MEANINGS AS IN
THE PLAN. THE PARTICIPANT ACKNOWLEDGES THAT HE OR SHE HAS RECEIVED A COPY OF THE
PLAN FROM THE COMPANY AND HAS CAREFULLY READ THE TERMS AND CONDITIONS OF THE
PLAN AND THIS AGREEMENT.

SYNTA PHARMACEUTICALS CORP.

By:  ____________________________________
Its: ____________________________________

<Page>

     1.     GRANT OF OPTION.

     The Company hereby grants to the Participant the right and option to
purchase all or any part of an aggregate of _______________ Shares, on the terms
and conditions and subject to all the limitations set forth herein, under United
States securities and tax laws, and in the Plan, which is incorporated herein by
reference. The Participant acknowledges receipt of a copy of the Plan.

     2.     PURCHASE PRICE.

     The purchase price of the Shares covered by the Option shall be $_____ per
Share, subject to adjustment, as provided in the Plan, in the event of a stock
split, reverse stock split or other events affecting the holders of Shares (the
"Purchase Price"). Payment shall be made in accordance with Section 9 of the
Plan.

     3.     EXERCISABILITY OF OPTION.

     Subject to the terms and conditions set forth in this Agreement and the
Plan, the Option granted hereby shall become exercisable in cumulative
installments of (i) 25% of the Shares on ________________________, and (ii)
6.25% of the Shares on the last day of each calendar quarter thereafter.
Notwithstanding the foregoing, the Option shall become vested and exercisable in
accordance with the terms and conditions set forth in Sections 24B and F of the
Plan.

     4.     TERM OF OPTION.

     The Option shall terminate ten years from the date of this Agreement, but
shall be subject to earlier termination as provided herein or in the Plan.

     If the Participant ceases to be an employee, director or consultant of the
Company or of an Affiliate (for any reason other than the death or Disability of
the Participant or termination of the Participant for "cause" [(AS DEFINED IN
THE PLAN) CONSIDER OTHER DEFINITIONS]), the Option may be exercised, if it has
not previously terminated, within three months after the date the Participant
ceases to be an employee, director or consultant of the Company or an Affiliate,
or within the originally prescribed term of the Option, whichever is earlier,
but may not be exercised thereafter. In such event, the Option shall be
exercisable only to the extent that the Option has become exercisable and is in
effect at the date of such cessation of employment, directorship or consultancy.

     Notwithstanding the foregoing, in the event of the Participant's Disability
or death within three months after the termination of employment, directorship
or consultancy, the Participant or the Participant's Survivors may exercise the
Option within one year after the date of the Participant's termination of
employment, directorship or consultancy, but in no event after the date of
expiration of the term of the Option.

     In the event the Participant's employment, directorship or consultancy is
terminated by the Company or an Affiliate for "cause" [(AS DEFINED IN THE
PLAN)], the Participant's right to exercise any unexercised portion of this
Option shall cease immediately as of the time the Participant is notified his or
her employment, directorship or consultancy is terminated for "cause," and this
Option shall thereupon terminate. Notwithstanding anything herein to the
contrary, if subsequent to the Participant's termination, but prior to the
exercise of the Option, the Board of Directors of the Company determines that,
either prior or subsequent to the Participant's termination, the Participant
engaged in conduct which would constitute "cause," then the Participant shall
immediately cease to have any right to exercise the Option and this Option shall
thereupon terminate.

                                        1
<Page>

     In the event of the Disability of the Participant, as determined in
accordance with the Plan, the Option shall be exercisable within one year after
the Participant's termination of service or, if earlier, within the term
originally prescribed by the Option. In such event, the Option shall be
exercisable:

     (a)    to the extent that the Option has become exercisable but has not
            been exercised as of the date of Disability; and

     (b)    in the event rights to exercise the Option accrue periodically, to
            the extent of a pro rata portion through the date of Disability of
            any additional vesting rights that would have accrued on the next
            vesting date had the Participant not become Disabled. The proration
            shall be based upon the number of days accrued in the current
            vesting period prior to the date of Disability.

     In the event of the death of the Participant while an employee, director or
consultant of the Company or of an Affiliate, the Option shall be exercisable by
the Participant's Survivors within one year after the date of death of the
Participant or, if earlier, within the originally prescribed term of the Option.
In such event, the Option shall be exercisable:

     (x)    to the extent that the Option has become exercisable but has not
            been exercised as of the date of death; and

     (y)    in the event rights to exercise the Option accrue periodically, to
            the extent of a pro rata portion through the date of death of any
            additional vesting rights that would have accrued on the next
            vesting date had the Participant not died. The proration shall be
            based upon the number of days accrued in the current vesting period
            prior to the Participant's date of death.

     5.     METHOD OF EXERCISING OPTION.

     Subject to the terms and conditions of this Agreement, the Option may be
exercised by written notice to the Company or its designee, in substantially the
form of EXHIBIT A attached hereto. Such notice shall state the number of Shares
with respect to which the Option is being exercised and shall be signed by the
person exercising the Option. Payment of the purchase price for such Shares
shall be made in accordance with Section 9 of the Plan. The Company shall
deliver such Shares as soon as practicable after the notice shall be received,
provided, however, that the Company may delay issuance of such Shares until
completion of any action or obtaining of any consent, which the Company deems
necessary under any applicable law (including, without limitation, state
securities or "blue sky" laws). The Shares as to which the Option shall have
been so exercised shall be registered in the Company's share register in the
name of the person so exercising the Option (or, if the Option shall be
exercised by the Participant and if the Participant shall so request in the
notice exercising the Option, shall be registered in the Company's share
register in the name of the Participant and another person jointly, with right
of survivorship) and shall be delivered as provided above to or upon the written
order of the person exercising the Option. In the event the Option shall be
exercised, pursuant to Section 4 hereof, by any person other than the
Participant, such notice shall be accompanied by appropriate proof of the right
of such person to exercise the Option. All Shares that shall be purchased upon
the exercise of the Option as provided herein shall be fully paid and
nonassessable.

     6.     PARTIAL EXERCISE.

     Exercise of this Option to the extent above stated may be made in part at
any time and from time to time within the above limits, except that no
fractional share shall be issued pursuant to this Option.

                                        2
<Page>

     7.     NON-ASSIGNABILITY.

     The Option shall not be transferable by the Participant otherwise than by
will or by the laws of descent and distribution or pursuant to a qualified
domestic relations order as defined by the Code or Title I of the Employee
Retirement Income Security Act or the rules thereunder. Except as provided in
the previous sentence, the Option shall be exercisable, during the Participant's
lifetime, only by the Participant (or, in the event of legal incapacity or
incompetency, by the Participant's guardian or representative) and shall not be
assigned, pledged or hypothecated in any way (whether by operation of law or
otherwise) and shall not be subject to execution, attachment or similar process.
Any attempted transfer, assignment, pledge, hypothecation or other disposition
of the Option or of any rights granted hereunder contrary to the provisions of
this Section 7, or the levy of any attachment or similar process upon the Option
shall be null and void.

     8.     NO RIGHTS AS STOCKHOLDER UNTIL EXERCISE.

     The Participant shall have no rights as a stockholder with respect to
Shares subject to this Agreement until registration of the Shares in the
Company's share register in the name of the Participant. Except as is expressly
provided in the Plan with respect to certain changes in the capitalization of
the Company, no adjustment shall be made for dividends or similar rights for
which the record date is prior to the date of such registration.

     9.     ADJUSTMENTS.

     The Plan contains provisions covering the treatment of Options in a number
of contingencies such as stock splits and mergers. Provisions in the Plan for
adjustment with respect to stock subject to Options and the related provisions
with respect to successors to the business of the Company are hereby made
applicable hereunder and are incorporated herein by reference.

     10.    TAXES.

     The Participant acknowledges that upon exercise of the Option the
Participant will be deemed to have taxable income measured by the difference
between the then fair market value of the Shares received upon exercise and the
price paid for such Shares pursuant to this Agreement. The Participant
acknowledges that any income or other taxes due from him or her with respect to
this Option or the Shares issuable pursuant to this Option shall be the
Participant's responsibility.

     The Participant agrees that the Company may withhold from the Participant's
remuneration, if any, the minimum statutory amount of federal, state and local
withholding taxes attributable to such amount that is considered compensation
includable in such person's gross income. At the Company's discretion, the
amount required to be withheld may be withheld in cash from such remuneration,
or in kind from the Shares otherwise deliverable to the Participant on exercise
of the Option. The Participant further agrees that, if the Company does not
withhold an amount from the Participant's remuneration sufficient to satisfy the
Company's income tax withholding obligation, the Participant will reimburse the
Company on demand, in cash, for the amount under-withheld.

     11.    PURCHASE FOR INVESTMENT.

     Unless the offering and sale of the Shares to be issued upon the particular
exercise of the Option shall have been effectively registered under the
Securities Act of 1933, as now in force or hereafter amended (the "1933 Act"),
the Company shall be under no obligation to issue the Shares covered by such
exercise unless and until the following conditions have been fulfilled:

                                        3
<Page>

     (a)    The person(s) who exercise the Option shall warrant to the Company,
            at the time of such exercise, that such person(s) are acquiring such
            Shares for their own respective accounts, for investment, and not
            with a view to, or for sale in connection with, the distribution of
            any such Shares, in which event the person(s) acquiring such Shares
            shall be bound by the provisions of the following legend which shall
            be endorsed upon the certificate(s) evidencing the Shares issued
            pursuant to such exercise:

                 "The shares represented by this certificate have been taken for
                 investment and they may not be sold or otherwise transferred by
                 any person, including a pledgee, unless (1) either (a) a
                 Registration Statement with respect to such shares shall be
                 effective under the Securities Act of 1933, as amended, or (b)
                 the Company shall have received an opinion of counsel
                 satisfactory to it that an exemption from registration under
                 such Act is then available, and (2) there shall have been
                 compliance with all applicable state securities laws;" and

     (b)    If the Company so requires, the Company shall have received an
            opinion of its counsel that the Shares may be issued upon such
            particular exercise in compliance with the 1933 Act without
            registration thereunder. Without limiting the generality of the
            foregoing, the Company may delay issuance of the Shares until
            completion of any action or obtaining of any consent, which the
            Company deems necessary under any applicable law (including without
            limitation state securities or "blue sky" laws).

     12.    RESTRICTIONS ON TRANSFER OF SHARES.

     12.1   If, in connection with a registration statement filed by the Company
pursuant to the Securities Act, the Company or its underwriter so requests, the
Participant will agree not to sell any Shares for a period not to exceed 180
days following the effectiveness of such registration.

     12.2   The Participant acknowledges and agrees that neither the Company,
its shareholders nor its directors and officers, has any duty or obligation to
disclose to the Participant any material information regarding the business of
the Company or affecting the value of the Shares before, at the time of, or
following a termination of the employment of the Participant by the Company,
including, without limitation, any information concerning plans for the Company
to make a public offering of its securities or to be acquired by or merged with
or into another firm or entity.

     13.    NO OBLIGATION TO MAINTAIN RELATIONSHIP.

     The Company is not by the Plan or this Option obligated to continue the
Participant as an employee, director or consultant of the Company or an
Affiliate. The Participant acknowledges: (i) that the Plan is discretionary in
nature and may be suspended or terminated by the Company at any time; (ii) that
the grant of the Option is a one-time benefit which does not create any
contractual or other right to receive future grants of options, or benefits in
lieu of options; (iii) that all determinations with respect to any such future
grants, including, but not limited to, the times when options shall be granted,
the number of shares subject to each option, the option price, and the time or
times when each option shall be exercisable, will be at the sole discretion of
the Company; (iv) that the Participant's participation in the Plan is voluntary;
(v) that the value of the Option is an extraordinary item of compensation which
is outside the scope of the Participant's employment contract, if any; and (vi)
that the Option is not part of normal or expected compensation for purposes of
calculating any severance, resignation, redundancy, end of service payments,
bonuses, long-service awards, pension or retirement benefits or similar
payments.

                                        4
<Page>

     14.    NOTICES.

     Any notices required or permitted by the terms of this Agreement or the
Plan shall be given by recognized courier service, facsimile, registered or
certified mail, return receipt requested, addressed as follows:

If to the Company:
                         Synta Pharmaceuticals Corp.
                         45 Hartwell Avenue
                         Lexington, MA 02421
                         Attention: Vice President Legal Affairs

If to the Participant:   ________________________
                         ________________________
                         ________________________
                         ________________________

or to such other address or addresses of which notice in the same manner has
previously been given. Any such notice shall be deemed to have been given upon
the earlier of receipt, one business day following delivery to a recognized
courier service or three business days following mailing by registered or
certified mail.

     15.    GOVERNING LAW.

     This Agreement shall be construed and enforced in accordance with the law
of the State of Delaware, without giving effect to the conflict of law
principles thereof. For the purpose of litigating any dispute that arises under
this Agreement, the parties hereby consent to exclusive jurisdiction in the
Commonwealth of Massachusetts and agree that such litigation shall be conducted
in the courts of Middlesex County, Massachusetts or the federal courts of the
United States for the District of Massachusetts.

     16.    BENEFIT OF AGREEMENT.

     Subject to the provisions of the Plan and the other provisions hereof, this
Agreement shall be for the benefit of and shall be binding upon the heirs,
executors, administrators, successors and assigns of the parties hereto.

     17.    ENTIRE AGREEMENT.

     This Agreement, together with the Plan, embodies the entire agreement and
understanding between the parties hereto with respect to the subject matter
hereof and supersedes all prior oral or written agreements and understandings
relating to the subject matter hereof. No statement, representation, warranty,
covenant or agreement not expressly set forth in this Agreement shall affect or
be used to interpret, change or restrict, the express terms and provisions of
this Agreement, provided, however, in any event, this Agreement shall be subject
to and governed by the Plan.

     18.    MODIFICATIONS AND AMENDMENTS.

     The terms and provisions of this Agreement may be modified or amended as
provided in the Plan.

                                        5
<Page>

     19.    WAIVERS AND CONSENTS.

     Except as provided in the Plan, the terms and provisions of this Agreement
may be waived, or consent for the departure therefrom granted, only by written
document executed by the party entitled to the benefits of such terms or
provisions. No such waiver or consent shall be deemed to be or shall constitute
a waiver or consent with respect to any other terms or provisions of this
Agreement, whether or not similar. Each such waiver or consent shall be
effective only in the specific instance and for the purpose for which it was
given, and shall not constitute a continuing waiver or consent.

     20.    DATA PRIVACY.

     By entering into this Agreement, the Participant: (i) authorizes the
Company and each Affiliate, and any agent of the Company or any Affiliate
administering the Plan or providing Plan recordkeeping services, to disclose to
the Company or any of its Affiliates such information and data as the Company or
any such Affiliate shall request in order to facilitate the grant of options and
the administration of the Plan; (ii) waives any data privacy rights he or she
may have with respect to such information; and (iii) authorizes the Company and
each Affiliate to store and transmit such information in electronic form.

                                        6
<Page>

                                                                       EXHIBIT A

                NOTICE OF EXERCISE OF NON-QUALIFIED STOCK OPTION

TO:  Synta Pharmaceuticals Corp.

Ladies and Gentlemen:

     I hereby exercise my Non-Qualified Stock Option to purchase _________
shares (the "Shares") of the common stock, $.0001 par value, of Synta
Pharmaceuticals Corp. (the "Company"), at the exercise price of $________ per
share, pursuant to and subject to the terms of that certain Non-Qualified Stock
Option Agreement between the undersigned and the Company dated _______________,
200_.

     I understand the nature of the investment I am making and the financial
risks thereof. I am aware that it is my responsibility to have consulted with
competent tax and legal advisors about the relevant national, state and local
income tax and securities laws affecting the exercise of the Option and the
purchase and subsequent sale of the Shares.

     I am paying the option exercise price for the Shares as follows:

                    ________________________________________

     Please issue the Shares (check one):

     / / to me; or

     / / to me and ____________________________, as joint tenants with right of
     survivorship, at the following address:      ________________________
                                                  ________________________
                                                  ________________________

     My mailing address for shareholder communications, if different from the
address listed above, is:      ________________________
                               ________________________
                               ________________________

                                Very truly yours,

                                ------------------------------------------------
                                Participant (signature)

                                ------------------------------------------------
                                Print Name

                                ------------------------------------------------
                                Date

                                ------------------------------------------------
                                Social Security Number

                                       A-1<Page>

                                                                 Exhibit 10.2(c)

                           RESTRICTED STOCK AGREEMENT

                           SYNTA PHARMACEUTICALS CORP.

     AGREEMENT made as of the _______ day of ___________________, 200__ (the
"Grant Date"), between Synta Pharmaceuticals Corp. (the "Company"), a Delaware
corporation having its principal place of business in Lexington, Massachusetts
and ________________________ (the "Participant").

     WHEREAS, the Company has adopted the 2005 Stock Plan (the "Plan") to
promote the interests of the Company by providing an incentive for employees,
directors and consultants of the Company or its Affiliates;

     WHEREAS, pursuant to the provisions of the Plan, the Company desires to
offer for sale to the Participant shares of the Company's common stock, $.0001
par value per share ("Common Stock"), in accordance with the provisions of the
Plan, all on the terms and conditions hereinafter set forth;

     WHEREAS, Participant wishes to accept said offer; and

     WHEREAS, the parties hereto understand and agree that any terms used and
not defined herein have the meanings ascribed to such terms in the Plan.

     NOW, THEREFORE, in consideration of the premises and the mutual covenants
contained herein and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto hereby agree as
follows:

     1.     TERMS OF PURCHASE. The Participant hereby accepts the offer of the
Company to issue to the Participant, in accordance with the terms of the Plan
and this Agreement, ______________________ (_________) Shares of the Company's
Common Stock (such shares, subject to adjustment pursuant to Section 24 of the
Plan and Subsection 2.1(h) hereof, the "Granted Shares") at a purchase price per
share of $.0001 (the "Purchase Price"), receipt of which is hereby acknowledged
by the Participant's prior service to the Company and which amount will be
reported as income on the Participant's W-2 for this calendar year.

     2.1.   COMPANY'S LAPSING REPURCHASE RIGHT.

     (a)    LAPSING REPURCHASE RIGHT. In the event that for any reason the
Participant is no longer an employee, director or consultant of the Company or
an Affiliate prior to __________________ (the "Termination"), the Participant
(or the Participant's Survivor) shall, on the date of Termination, immediately
forfeit to the Company (or its designee) all of the Granted Shares which have
not yet lapsed in accordance with the schedule set forth below (the "Lapsing
Repurchase Right").

            The Company's Lapsing Repurchase Right is as follows:

                 (i)     If the Participant's Termination is prior to [THE FIRST
     ANNIVERSARY OF THE GRANT DATE], all of the Granted Shares shall be
     forfeited to the Company.

<Page>

                 (ii)    If the Participant's Termination is on or after [THE
     FIRST ANNIVERSARY OF THE GRANT DATE] but prior to _______________, __% of
     the Granted Shares shall be forfeited to the Company.

     (b)    EFFECT OF TERMINATION FOR DISABILITY OR UPON DEATH. The following
rules apply if the Participant's Termination is by reason of Disability or
death: to the extent the Company's Lapsing Repurchase Right has not lapsed as of
the date of Disability or death, as case may be, the Participant shall forfeit
to the Company any or all of the Granted Shares subject to such Lapsing
Repurchase Right; provided, however, that the Company's Lapsing Repurchase Right
shall be deemed to have lapsed to the extent of a pro rata portion of the
Granted Shares through the date of Disability or death, as would have lapsed had
the Participant not become Disabled or died, as the case may be. The proration
shall be based upon the number of days accrued in such current vesting period
prior to the Participant's date of Disability or death, as the case may be.

     (c)    EFFECT OF A FOR CAUSE TERMINATION. Notwithstanding anything to the
contrary contained in this Agreement, in the event the Company or an Affiliate
terminates the Participant's employment or service for "cause" (as defined in
the Plan) or in the event the Administrator determines, within one year after
the Participant's termination, that either prior or subsequent to the
Participant's termination the Participant engaged in conduct that would
constitute "cause," all of the Granted Shares then held by the Participant shall
be forfeited to the Company immediately as of the time the Participant is
notified that he or she has been terminated for "cause" or that he or she
engaged in conduct which would constitute "cause".

     (d)    EFFECT OF CHANGE OF CONTROL. Except as otherwise provided in
Subsection 2.1(c) above, the Company's Lapsing Repurchase Right shall terminate,
and the Participant's ownership of all Granted Shares then owned by the
Participant shall become vested in accordance with the terms and conditions set
forth in Sections 24B and F of the Plan.

     (e)    ESCROW. The certificates representing all Granted Shares acquired by
the Participant hereunder which from time to time are subject to the Lapsing
Repurchase Right shall be delivered to the Company and the Company shall hold
such Granted Shares in escrow as provided in this Subsection 2.1(e). The Company
shall promptly release from escrow and deliver to the Participant a certificate
for the whole number of Granted Shares, if any, as to which the Company's
Lapsing Repurchase Right has lapsed. In the event of forfeiture to the Company
of Granted Shares subject to the Lapsing Repurchase Right, the Company shall
release from escrow and cancel a certificate for the number of Granted Shares so
forfeited. Any securities distributed in respect of the Granted Shares held in
escrow, including, without limitation, shares issued as a result of stock
splits, stock dividends or other recapitalizations, shall also be held in escrow
in the same manner as the Granted Shares.

     (f)    PROHIBITION ON TRANSFER. The Participant recognizes and agrees that
all Granted Shares which are subject to the Lapsing Repurchase Right may not be
sold, transferred, assigned, hypothecated, pledged, encumbered or otherwise
disposed of, whether voluntarily or by operation of law, other than to the
Company (or its designee). However, the Participant, with the approval of the
Administrator, may transfer the Granted Shares for no consideration to or for
the benefit of the Participant's Immediate Family (including, without
limitation, to a trust for the benefit of the Participant's Immediate Family or
to a partnership or limited liability company for one or more members of the
Participant's Immediate Family), subject to such limits as the Administrator may
establish, and the transferee shall remain subject to all the terms and
conditions applicable to this Agreement prior to such transfer and each such
transferee shall so acknowledge in writing as a condition precedent to the
effectiveness of such transfer. The term "Immediate Family" shall mean the
Participant's spouse, former spouse, parents, children, stepchildren, adoptive
relationships, sisters, brothers, nieces and nephews and grandchildren (and, for
this purpose,

                                        2
<Page>

shall also include the Participant. The Company shall not be required to
transfer any Granted Shares on its books which shall have been sold, assigned or
otherwise transferred in violation of this Subsection 2.1(f), or to treat as the
owner of such Granted Shares, or to accord the right to vote as such owner or to
pay dividends to, any person or organization to which any such Granted Shares
shall have been so sold, assigned or otherwise transferred, in violation of this
Subsection 2.1(f).

     (g)    FAILURE TO DELIVER GRANTED SHARES TO BE REPURCHASED. In the event
that the Granted Shares to be forfeited to the Company under this Agreement are
not in the Company's possession pursuant to Subsection 2.1(e) above or otherwise
and the Participant or the Participant's Survivor fails to deliver such Granted
Shares to the Company (or its designee), the Company may immediately take such
action as is appropriate to transfer record title of such Granted Shares from
the Participant to the Company (or its designee) and treat the Participant and
such Granted Shares in all respects as if delivery of such Granted Shares had
been made as required by this Agreement. The Participant hereby irrevocably
grants the Company a power of attorney which shall be coupled with an interest
for the purpose of effectuating the preceding sentence.

     (h)    ADJUSTMENTS. The Plan contains provisions covering the treatment of
Shares in a number of contingencies such as stock splits, mergers and Change of
Control transactions. Provisions in the Plan for adjustment with respect to the
Granted Shares and the related provisions with respect to successors to the
business of the Company are hereby made applicable hereunder and are
incorporated herein by reference.

     2.2    GENERAL RESTRICTIONS ON TRANSFER OF GRANTED SHARES.

     (a)    If in connection with a registration statement filed by the Company
pursuant to the Securities Act of 1933, as amended (the "1933 Act"), the Company
or its underwriter so requests, the Participant will agree not to sell any of
his or her Granted Shares whether or not the Lapsing Repurchase Right has lapsed
for a period not to exceed the lesser of: (i) 180 days following the
effectiveness of such registration statement or (ii) such period as the officers
and directors of the Company agree not to sell their Common Stock of the
Company.

     (b)    The Participant acknowledges and agrees that neither the Company
nor, its shareholders nor its directors and officers, has any duty or obligation
to disclose to the Participant any material information regarding the business
of the Company or affecting the value of the Shares before, at the time of, or
following a Termination, including, without limitation, any information
concerning plans for the Company to make a public offering of its securities or
to be acquired by or merged with or into another firm or entity.

     3.     SECURITIES LAW COMPLIANCE. The Participant specifically acknowledges
and agrees that any sales of Granted Shares shall be made in accordance with the
requirements of the 1933 Act.

     4.     RIGHTS AS A STOCKHOLDER. The Participant shall have all the rights
of a stockholder with respect to the Granted Shares, including voting and
dividend rights, subject to the transfer and other restrictions set forth herein
and in the Plan.

     5.     LEGEND. In addition to any legend required pursuant to the Plan, all
certificates representing the Granted Shares to be issued to the Participant
pursuant to this Agreement shall have endorsed thereon a legend substantially as
follows:

          "The shares represented by this certificate are subject to
          restrictions set forth in a Restricted Stock Agreement dated as of
          ____________________ with this Company, a copy of which

                                        3
<Page>

          Agreement is available for inspection at the offices of the Company or
          will be made available upon request."

     6.   INCORPORATION OF THE PLAN. The Participant specifically understands
and agrees that the Granted Shares issued under the Plan are being sold to the
Participant pursuant to the Plan, a copy of which Plan the Participant
acknowledges he or she has read and understands and by which Plan he or she
agrees to be bound. The provisions of the Plan are incorporated herein by
reference.

     7.   TAX LIABILITY OF THE PARTICIPANT AND PAYMENT OF TAXES. The Participant
acknowledges and agrees that any income or other taxes due from the Participant
with respect to the Granted Shares issued pursuant to this Agreement, including,
without limitation, the Lapsing Repurchase Right, shall be the Participant's
responsibility. Without limiting the foregoing, the Participant agrees that, to
the extent that the lapsing of restrictions on disposition of any of the Granted
Shares or the declaration of dividends on any such shares before the lapse of
such restrictions on disposition results in the Participant's being deemed to be
in receipt of earned income under the provisions of the Code, the Company shall
be entitled to immediate payment from the Participant of the amount of any tax
required to be withheld by the Company.

     Upon execution of this Agreement, the Participant may file an election
under Section 83 of the Code in substantially the form attached as EXHIBIT B.
The Participant acknowledges that if she does not file such an election, as the
Granted Shares are released from the Lapsing Repurchase Right in accordance with
Section 2.1, the Participant will have income for tax purposes equal to the fair
market value of the Granted Shares at such date, less the price paid for the
Granted Shares by the Participant.(1)

     [The Participant shall be required to deposit with the Company an amount of
cash equal to the amount determined by the Company to be required with respect
to the statutory minimum of the Participant's estimated total federal, state and
local tax obligations associated with the termination of the Lapsing Repurchase
right with respect to the Granted Shares. In connection with the foregoing, the
Participant agrees that the Company shall authorize a registered broker(s) (the
"Broker") to sell on the date that the Granted Shares shall be released from the
Lapsing Repurchase Right such number of Granted Shares as the Company instructs
the Broker to sell to satisfy the Company's withholding obligations, after
deduction of the Broker's commission, and the Broker shall remit to the Company
the cash necessary in order for the Company to satisfy its withholding
obligation. The Company shall not deliver any of the Granted Shares until the
deposit required herein for withholding has been made. In connection with such
sale of Granted Shares, the Participant shall execute any such documents
requested

----------
(1) If the Shares are purchased at fair market value then the 83(b) election
would be protective in nature and would not result in any additional tax on
purchase of the Shares. If the Shares are being purchased at a discount from
fair market value, the 83(b) election accelerates the timing of the taxation to
the time of the grant, and later dispositions are taxed at capital gain rates.
If the 83(b) election is not made then the tax is paid at the time the
restrictions lapse (which could result in a higher possible taxable spread at
that time). An 83(b) election must be made within 30 days of the grant.

     If the Company pays cash dividends and an 83(b) election is filed,
dividends receive dividend tax treatment. However, if no 83(b) election is made
(as is the case with most public companies) the Employee will pay ordinary
income tax rates on the cash dividend payments until the restrictions on the
shares underlying those dividends lapse.

     If no 83(b) election is filed consider adding the following to the
Agreement: The Participant has agreed not to file an election with respect to
the Granted Shares under Section 83 of the Code and has obtained the advice or
has been given the opportunity to obtain the advice of his or her tax advisors
with respect to the tax consequences of the purchase of the Granted Shares and
the provisions of this Agreement.

                                        4
<Page>

by Broker in order to effectuate the sale of the Granted Shares and payment of
the withholding obligation to the Company.]

     8.     EQUITABLE RELIEF. The Participant specifically acknowledges and
agrees that in the event of a breach or threatened breach of the provisions of
this Agreement or the Plan, including the attempted transfer of the Granted
Shares by the Participant in violation of this Agreement, monetary damages may
not be adequate to compensate the Company, and, therefore, in the event of such
a breach or threatened breach, in addition to any right to damages, the Company
shall be entitled to equitable relief in any court having competent
jurisdiction. Nothing herein shall be construed as prohibiting the Company from
pursuing any other remedies available to it for any such breach or threatened
breach.

     9.     NO OBLIGATION TO MAINTAIN RELATIONSHIP. The Company is not by the
Plan or this Agreement obligated to continue the Participant as an employee,
director or consultant of the Company or an Affiliate. The Participant
acknowledges: (i) that the Plan is discretionary in nature and may be suspended
or terminated by the Company at any time; (ii) that the grant of the Shares is a
one-time benefit which does not create any contractual or other right to receive
future grants of shares, or benefits in lieu of shares; (iii) that all
determinations with respect to any such future grants, including, but not
limited to, the times when shares shall be granted, the number of shares to be
granted, the purchase price, and the time or times when each share shall be free
from a lapsing repurchase right, will be at the sole discretion of the Company;
(iv) that the Participant's participation in the Plan is voluntary; (v) that the
value of the Shares is an extraordinary item of compensation which is outside
the scope of the Participant's employment contract, if any; and (vi) that the
Shares are not part of normal or expected compensation for purposes of
calculating any severance, resignation, redundancy, end of service payments,
bonuses, long-service awards, pension or retirement benefits or similar
payments.

     10.    NOTICES. Any notices required or permitted by the terms of this
Agreement or the Plan shall be given by recognized courier service, facsimile,
registered or certified mail, return receipt requested, addressed as follows:

     If to the Company:

               Synta Pharmaceuticals Corp.
               45 Hartwell Avenue
               Lexington, MA 02421
               Attn:  Vice President of Legal Affairs

     If to the Participant:

                                  EMPLOYEE NAME

or to such other address or addresses of which notice in the same manner has
previously been given. Any such notice shall be deemed to have been given on the
earliest of receipt, one business day following delivery by the sender to a
recognized courier service, or three business days following mailing by
registered or certified mail.

     11.    BENEFIT OF AGREEMENT. Subject to the provisions of the Plan and the
other provisions hereof, this Agreement shall be for the benefit of and shall be
binding upon the heirs, executors, administrators, successors and assigns of the
parties hereto.

     12.    GOVERNING LAW. This Agreement shall be construed and enforced in
accordance with the laws of the State of Delaware, without giving effect to the
conflict of law principles thereof. For the

                                        5
<Page>

purpose of litigating any dispute that arises under this Agreement, whether at
law or in equity, the parties hereby consent to exclusive jurisdiction in
Massachusetts and agree that such litigation shall be conducted in the courts of
the Commonwealth of Massachusetts or the federal courts of the United States for
the District of Massachusetts.

     13.    SEVERABILITY. If any provision of this Agreement is held to be
invalid or unenforceable by a court of competent jurisdiction, then such
provision or provisions shall be modified to the extent necessary to make such
provision valid and enforceable, and to the extent that this is impossible, then
such provision shall be deemed to be excised from this Agreement, and the
validity, legality and enforceability of the rest of this Agreement shall not be
affected thereby.

     14.    ENTIRE AGREEMENT. This Agreement, together with the Plan,
constitutes the entire agreement and understanding between the parties hereto
with respect to the subject matter hereof and supersedes all prior oral or
written agreements and understandings relating to the subject matter hereof. No
statement, representation, warranty, covenant or agreement not expressly set
forth in this Agreement shall affect or be used to interpret, change or restrict
the express terms and provisions of this Agreement provided, however, in any
event, this Agreement shall be subject to and governed by the Plan.

     15.    MODIFICATIONS AND AMENDMENTS; WAIVERS AND CONSENTS. The terms and
provisions of this Agreement may be modified or amended as provided in the Plan.
Except as provided in the Plan, the terms and provisions of this Agreement may
be waived, or consent for the departure therefrom granted, only by written
document executed by the party entitled to the benefits of such terms or
provisions. No such waiver or consent shall be deemed to be or shall constitute
a waiver or consent with respect to any other terms or provisions of this
Agreement, whether or not similar. Each such waiver or consent shall be
effective only in the specific instance and for the purpose for which it was
given, and shall not constitute a continuing waiver or consent.

     16.    CONSENT OF SPOUSE/DOMESTIC PARTNER. If the Participant has a spouse
or domestic partner as of the date of this Agreement, the Participant's spouse
or domestic partner shall execute a Consent of Spouse/Domestic Partner in the
form of EXHIBIT A hereto, effective as of the date hereof. Such consent shall
not be deemed to confer or convey to the spouse or domestic partner any rights
in the Granted Shares that do not otherwise exist by operation of law or the
agreement of the parties. If the Participant subsequent to the date hereof,
marries, remarries or applies to the Company for domestic partner benefits, the
Participant shall, not later than 60 days thereafter, obtain his or her new
spouse/domestic partner's acknowledgement of and consent to the existence and
binding effect of all restrictions contained in this Agreement by having such
spouse/domestic partner execute and deliver a Consent of Spouse/Domestic Partner
in the form of Exhibit A.

     17.    COUNTERPARTS. This Agreement may be executed in one or more
counterparts, and by different parties hereto on separate counterparts, each of
which shall be deemed an original, but all of which together shall constitute
one and the same instrument.

     18.    DATA PRIVACY. By entering into this Agreement, the Participant: (i)
authorizes the Company and each Affiliate, and any agent of the Company or any
Affiliate administering the Plan or providing Plan record keeping services, to
disclose to the Company or any of its Affiliates such information and data as
the Company or any such Affiliate shall request in order to facilitate the grant
of Shares and the administration of the Plan; (ii) waives any data privacy
rights he or she may have with respect to such information; and (iii) authorizes
the Company and each Affiliate to store and transmit such information in
electronic form.

                                        6
<Page>

                      [THE NEXT PAGE IS THE SIGNATURE PAGE]

                                        7
<Page>

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

                                       SYNTA PHARMACEUTICALS CORP.

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

                                       Participant:

                                       -----------------------------------------
                                       Print Name:

                                        8
<Page>

                                                                       EXHIBIT A

                       CONSENT OF SPOUSE/DOMESTIC PARTNER

     I, ____________________________, spouse or domestic partner of
_________________________, acknowledge that I have read the RESTRICTED STOCK
AGREEMENT dated as of _______________ (the "Agreement") to which this Consent is
attached as Exhibit A and that I know its contents. Capitalized terms used and
not defined herein shall have the meanings assigned to such terms in the
Agreement. I am aware that by its provisions the Granted Shares granted to my
spouse/domestic partner pursuant to the Agreement are subject to a Lapsing
Repurchase Right in favor of Synta Pharmaceuticals Corp. (the "Company") and
that, accordingly, I may be required to forfeit to the Company any or all of the
Granted Shares of which I may become possessed as a result of a gift from my
spouse/domestic partner or a court decree and/or any property settlement in any
domestic litigation.

     I hereby agree that my interest, if any, in the Granted Shares subject to
the Agreement shall be irrevocably bound by the Agreement and further understand
and agree that any community property interest I may have in the Granted Shares
shall be similarly bound by the Agreement.

     I agree to the Lapsing Repurchase Right described in the Agreement and I
hereby consent to the forfeiture of the Granted Shares to the Company by my
spouse/domestic partner or my spouse/domestic partner's legal representative in
accordance with the provisions of the Agreement. Further, as part of the
consideration for the Agreement, I agree that at my death, if I have not
disposed of any interest of mine in the Granted Shares by an outright bequest of
the Granted Shares to my spouse or domestic partner, then the Company shall have
the same rights against my legal representative to exercise its rights to the
Granted Shares with respect to any interest of mine in the Granted Shares as it
would have had pursuant to the Agreement if I had acquired the Granted Shares
pursuant to a court decree in domestic litigation.

     I AM AWARE THAT THE LEGAL, FINANCIAL AND RELATED MATTERS CONTAINED IN THE
AGREEMENT ARE COMPLEX AND THAT I AM FREE TO SEEK INDEPENDENT PROFESSIONAL
GUIDANCE OR COUNSEL WITH RESPECT TO THIS CONSENT. I HAVE EITHER SOUGHT SUCH
GUIDANCE OR COUNSEL OR DETERMINED AFTER REVIEWING THE AGREEMENT CAREFULLY THAT I
WILL WAIVE SUCH RIGHT.

     Dated as of the _______ day of ________________, 200_.

                                       -----------------------------------------
                                       Print name:

                                       A-1
<Page>

                                                                       EXHIBIT B

                    ELECTION TO INCLUDE GROSS INCOME IN YEAR
                      OF TRANSFER PURSUANT TO SECTION 83(b)
                OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED

     In accordance with Section 83(b) of the Internal Revenue Code of 1986, as
amended (the "Code"), the undersigned hereby elects to include in his gross
income as compensation for services the excess, if any, of the fair market value
of the property (described below) at the time of transfer over the amount paid
for such property.

The following sets for the information required in accordance with the Code and
the regulations promulgated hereunder:

1.   The name, address and social security number of the undersigned are:

         Name:
         Address:
         Social Security No.:

2.   The description of the property with respect to which the election is being
     made is as follows:

     ____________ (___) shares (the "Shares") of Common Stock, $.0001 par value
     per share, of Synta Pharmaceuticals Corp., a Delaware corporation (the
     "Company").

3.   This election is made for the calendar year ____, with respect to the
     transfer of the property to the Taxpayer on _________________.

4.   Description of restrictions: The property is subject to the following
     restrictions:

     In the event taxpayer's employment with the Company or an Affiliate is
     terminated, the Company may repurchase all or any portion of the Shares
     determined as set forth below at the acquisition price paid by the
     taxpayer:

     A.     If the termination takes place on or prior to ____________, the
            Purchase Option will apply to all of the Shares.

     B.     If the termination takes place after __________, 200_, the number of
            Shares to which the Purchase Option applies shall be ______________
            (___) Shares less ____________________ (___) Shares for each full
            twelve (12) month period elapsed after _____________, 200_ if the
            taxpayer is employed by the Company or an Affiliate.

5.   The fair market value at time of transfer (determined without regard to any
     restrictions other than restrictions which by their terms will never lapse)
     of the property with respect to which this election is being made was not
     more than $____ per Share.

6.   The amount paid by taxpayer for said property was $___ per Share.

7.   A copy of this statement has been furnished to the Company.

Signed this ____ day of ______, 200_.

                                        ------------------------------------
                                        Print Name:

                                       B-1

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00083-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00083-of-00352.parquet"}]]