SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
IVESTER M DOUGLAS

(Last) (First) (Middle)
C/O S1 CORPORATION
705 WESTECH DRIVE

(Street)
NORCROSS GA 30092

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
S1 CORP /DE/ [ SONE ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
02/10/2012
4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 02/10/2012 U 212,000 D (1) 4,500 D
Common Stock 02/13/2012 D 4,500 D (2) 0 D
Common Stock 02/13/2012 M 46,630 A (3) 46,630 D
Common Stock 02/13/2012 D 46,630 D (3) 0 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Phantom Stock (3) 02/13/2012 M 46,630 (3) (3) Common Stock 46,630 (3) 0 D
Director Stock Option (Right to Buy) $3.57 02/13/2012 D 30,000 08/11/2004 08/11/2013 Common Stock 30,000 $6.708(4) 0 D
Director Stock Option (Right to Buy) $4.15 02/13/2012 D 30,000 11/08/2006 11/08/2015 Common Stock 30,000 $6.128(5) 0 D
Director Stock Option (Right to Buy) $4.86 02/13/2012 D 15,000 11/01/2007 11/01/2016 Common Stock 15,000 $5.418(6) 0 D
Director Stock Option (Right to Buy) $6.05 02/13/2012 D 10,000 (7) 06/05/2020 Common Stock 10,000 $4.228(7) 0 D
Director Stock Option (Right to Buy) $6.38 02/13/2012 D 16,000 (8) 05/28/2018 Common Stock 16,000 $3.898(8) 0 D
Director Stock Option (Right to Buy) $7.12 02/13/2012 D 10,000 (9) 06/11/2019 Common Stock 10,000 $3.158(9) 0 D
Director Stock Option (Right to Buy) $8.01 02/13/2012 D 15,000 05/25/2008 05/25/2017 Common Stock 15,000 $2.268(10) 0 D
Director Stock Option (Right to Buy) $8.07 02/13/2012 D 10,000 04/19/2005 04/19/2014 Common Stock 10,000 $2.208(11) 0 D
Explanation of Responses:
1. Disposed of pursuant to the terms of the Transaction Agreement, dated as of October 3, 2011 (the "Transaction Agreement"), by and among S1 Corporation, ACI Worldwide, Inc. and Antelope Investment Co. LLC in exchange for (i) $10.00 in cash or (ii) 0.3148 of a share of ACI Worldwide, Inc. common stock, subject to proration, per share. Mr. Ivester elected to tender all of his shares of S1 Corporation common stock for stock consideration, which as of February 10, 2012 (the date ACI Worldwide, Inc. accepted all shares tendered in the tender offer) had a market value of $10.50 per share.
2. Disposed of pursuant to the terms of the Transaction Agreement in exchange for 1,345 shares of ACI Worldwide, Inc. common stock having a market value of $35.47 per share on the trading day immediately prior to the effective time of the merger.
3. Each share of phantom stock was the economic equivalent of one share of common stock. Pursuant to the terms of the Transaction Agreement, each share of phantom stock was entitled to receive $6.62 in cash and 0.1064 of a share of ACI Worldwide, Inc. common stock, for a total market value of $10.278 per share as of the effective time of the merger.
4. This option was cancelled in the merger in exchange for a cash payment of $201,240, representing the difference between the exercise price of the option and $10.278, which represents the Blended Value (as defined in the Transaction Agreement) of the merger consideration as of the effective time of the merger.
5. This option was cancelled in the merger in exchange for a cash payment of $183,840, representing the difference between the exercise price of the option and $10.278, which represents the Blended Value (as defined in the Transaction Agreement) of the merger consideration as of the effective time of the merger.
6. This option was cancelled in the merger in exchange for a cash payment of $81,270, representing the difference between the exercise price of the option and $10.278, which represents the Blended Value (as defined in the Transaction Agreement) of the merger consideration as of the effective time of the merger.
7. This option, which previously vested in four equal installments ending on April 1, 2011, was cancelled in the merger in exchange for a cash payment of $42,280, representing the difference between the exercise price of the option and $10.278, which represents the Blended Value (as defined in the Transaction Agreement) of the merger consideration as of the effective time of the merger.
8. This option, which previously vested in four equal installments ending on January 1, 2009, was cancelled in the merger in exchange for a cash payment of $62,368, representing the difference between the exercise price of the option and $10.278, which represents the Blended Value (as defined in the Transaction Agreement) of the merger consideration as of the effective time of the merger.
9. This option, which previously vested in four equal installments ending on April 1, 2010, was cancelled in the merger in exchange for a cash payment of $31,580, representing the difference between the exercise price of the option and $10.278, which represents the Blended Value (as defined in the Transaction Agreement) of the merger consideration as of the effective time of the merger.
10. This option was cancelled in the merger in exchange for a cash payment of $34,020, representing the difference between the exercise price of the option and $10.278, which represents the Blended Value (as defined in the Transaction Agreement) of the merger consideration as of the effective time of the merger.
11. This option was cancelled in the merger in exchange for a cash payment of $22,080, representing the difference between the exercise price of the option and $10.278, which represents the Blended Value (as defined in the Transaction Agreement) of the merger consideration as of the effective time of the merger.
Remarks:
/s/ R. Daniel Keating, Attorney-in-Fact 02/14/2012
** Signature of Reporting Person Date
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