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^*

LONDON MERCHANT SECURITIES PLC

(Last)

(First)

(Middle)

33 ROBERT ADAM STREET

(Street)

LONDON W1U 3HR ENGLAND

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
06/29/2005

3. Issuer Name and Ticker or Trading Symbol
CHYRON CORP [ CYRO ]

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

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

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 by LMS Tiger Investments Limited	3,715,391	I	See footnote⁽¹⁾
Common Stock by Westpool Investment Trust plc	3,024,069	I	See footnote⁽²⁾
Common Stock by Lion Investments Limited	11,350	I	See footnote⁽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)
Debenture by Westpool Investment Trust plc	02/01/2004	12/31/2006	Common Stock	785,555	$0.65	I	See footnote⁽²⁾
Debenture by Lion Investments Limited	02/01/2004	12/31/2006	Common Stock	370,284	$0.65	I	See footnote⁽³⁾

Explanation of Responses:

1. LMS Tiger Investments Limited ("Tiger") currently owns 3,715,391 shares of Common Stock par value $0.01 per share (the "Common Stock") in Chyron Corporation (the "Issuer"). Tiger is an investment company wholly-owned by LMS Capital Limited ("Capital"). Capital is an investment company wholly-owned by the reporting person, London Merchant Securities plc ("LMS"). By virtue of this relationship, LMS can be deemed an indirect beneficial owner of all the securities owned by Tiger.

2. Westpool Investment Trust plc ("Westpool") currently owns 3,024,069 shares of Common Stock of the Issuer. 3,000,000 of these shares were purchased pursuant to a private placement transaction under a letter Agreement dated June 29, 2005 for $0.20 per share. Westpool received 24,069 shares of Common Stock upon the exercise of 6,343 Series A Warrants expiring December 31, 2004 (the "Series A Warrants") and 17,726 Series B Warrants expiring December 31, 2004 (the "Series B Warrants") on December 27, 2004. Westpool also owns debentures that permit it to acquire 785,555 shares of Common Stock at a conversion price of $0.65 per share. Westpool is an investment company wholly-owned by Capital. Capital is an investment company wholly-owned by LMS. By virtue of this relationship, LMS can be deemed an indirect beneficial owner of all the securities owned by Westpool.

3. Lion Investments Limited ("Lion") currently owns 11,350 shares of Common Stock of the Issuer. Lion received these shares upon the exercise of 3,018 Series A Warrants and 8,332 Series B Warrants on December 27, 2004. Lion also owns debentures that permit it to acquire 370,284 shares of Common Stock at a conversion price of $0.65 per share. Lion is an investment company wholly-owned by Capital. Capital is an investment company wholly-owned by LMS. By virtue of this relationship, LMS can be deemed an indirect beneficial owner of all the securities owned by Lion.

	/s/ Martin Pexton	07/11/2005
	** 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).
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