SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Bahcall Safi R

(Last)

(First)

(Middle)

C/O SYNTA PHARMACEUTICALS CORP.

45 HARTWELL AVENUE

(Street)

LEXINGTON

02421

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
02/05/2007

3. Issuer Name and Ticker or Trading Symbol
SYNTA PHARMACEUTICALS CORP [ SNTA ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	President and CEO

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	2,245,525⁽¹⁾	D
Common Stock	110,000⁽¹⁾	I	By trust⁽²⁾⁽³⁾

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Employee Stock Option (Right to Buy)	⁽⁴⁾	02/15/2015	Common Stock	37,500⁽⁵⁾	$14⁽⁵⁾	D
Employee Stock Option (Right to Buy)	⁽⁶⁾	02/15/2016	Common Stock	50,000⁽⁵⁾	$14⁽⁵⁾	D

Explanation of Responses:

1. Reflects a 1-for-4 reverse stock split effected on February 2, 2007 in connection with the Issuer's initial public offering, pursuant to which the number of shares of Common Stock was divided by 4.

2. Of these shares, 15,000 are owned directly by the Safi R. Bahcall Irrevocable Trust and indirectly by the Reporting Person as the beneficiary of the trust; 24,250 are owned directly by the 2004 Neta Bahcall GRAT and indirectly by the Reporting Person as the trustee and a beneficiary of the trust; 40,750 are owned directly by the 2006 Neta Bahcall GRAT and indirectly by the Reporting Person as a beneficiary of the trust; 15,000 are owned directly by the Dan O. Bahcall Irrevocable Trust and indirectly by the Reporting Person as the brother of the beneficiary of the trust; and 15,000 are owned directly by the Orli G. Bahcall Irrevocable Trust and indirectly by the Reporting Person as the brother of the beneficiary of the trust.

3. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, if any, and the inclusion of these shares in this report shall not be deemed an admission of the beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

4. The option vested as to 25% of the shares on February 15, 2006 and as to an additional 6.25% of the shares on the last day of each calendar quarter thereafter.

5. Reflects a 1-for-4 reverse stock split effected on February 2, 2007 in connection with the Issuer's initial public offering pursuant to which (i) the number of shares of Common Stock underlying the option was divided by 4 and (ii) the exercise price of the option was multiplied by 4.

6. The option vests as to 25% of the shares on February 15, 2007 and as to an additional 6.25% of the shares on the last day of each calendar quarter thereafter.

	/s/ Ann Margaret Eames, Attorney-in-Fact	02/05/2007
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.