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*
NATINCO S A

(Last) (First) (Middle)
2, AVENUE CHARLES DE GAULLE

(Street)
L-1653 LUXEMBOURG N4

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
TEKELEC [ TKLC ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
03/02/2010
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X 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 03/02/2010 S 4,275,651 D $17.26(1) 4,275,650 D(2)
Common Stock 03/02/2010 S 4,275,650 D $17.26(1) 0 D(2)
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
1. Name and Address of Reporting Person*
NATINCO S A

(Last) (First) (Middle)
2, AVENUE CHARLES DE GAULLE

(Street)
L-1653 LUXEMBOURG N4

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
CAPITA TRUSTEES LTD AS TRUSTEES OF THE NATINEC SETTLEMENT

(Last) (First) (Middle)
PO BOX 532

(Street)
ST HELIER, JERSEY CHANNEL ISL JE4 5UW

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
Explanation of Responses:
1. The Shares were sold in a private transaction in exchange for non-cash consideration having this value.
2. These securities were owned (i) indirectly by Natinco, (ii) indirectly by Capita Trustees Limited as Trustees of The Natinec Settlement (the "Trust") and (iii) indirectly by the Trust. The Trust owns all or substantially all of the equity interest in Natinco.
Remarks:
Stirling Trustees Limited (formerly trustee of the Natinec Trust under The Natinec Settlement Trust dated January 9, 2003) was merged into Capita Trustees Limited (currently trustee of The Natinec Settlement).
Pierre Lentz, as a Director of Natinco, S.A. 03/02/2010
John Seil, as a Director of Natinco, S.A. 03/02/2010
James Muir, as a Director of Capita Trustees Limited as Trustees of The Natinec Settlement 03/02/2010
Roger Colyer, as a Director of Capita Trustees Limited as Trustees of The Natinec Settlement 03/02/2010
** 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 4 (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).
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