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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
STB SYSTEMS, INC.
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(Name of Issuer)
Common Stock, par value $.01 per share
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(Title of Class of Securities)
784741 10 0
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(CUSIP Number)
*The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter the disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).
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CUSIP No. 784741 10 0
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(1) NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS.
OF ABOVE PERSONS
Mark S. Sims
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(2) CHECK THE APPROPRIATE BOX IF A MEMBER (a) / /
OF A GROUP (b) /X/
(SEE INSTRUCTIONS)
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(3) SEC USE ONLY
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(4) CITIZENSHIP OR PLACE OF ORGANIZATION
United States
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NUMBER OF SHARES (5) SOLE VOTING
BENEFICIALLY POWER 450,001 (See Item 4)
OWNED BY --------------------------------------------------
EACH REPORTING (6) SHARED VOTING
PERSON WITH POWER -0-
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(7) SOLE DISPOSITIVE
POWER 450,001 (See Item 4)
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(8) SHARED DISPOSITIVE
POWER -0-
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(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
450,001 (See Item 4)
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(10) CHECK IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES
(SEE INSTRUCTIONS) Not Applicable
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(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
6.5% (See Item 4)
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(12) TYPE OF REPORTING PERSON*
(SEE INSTRUCTIONS) IN
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ITEM 1
(a) NAME OF ISSUER:
STB SYSTEMS, INC.
(b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
1651 North Glenville Drive
Richardson, Texas 75081
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ITEM 2
(a) NAME OF PERSON FILING:
Mark S. Sims
(b) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:
1651 North Glenville Drive
Richardson, Texas 75081
(c) CITIZENSHIP:
United States
(d) TITLE OF CLASS OF SECURITIES:
Common Stock, par value $.01 per share
(e) CUSIP NO:
784741 10 0
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ITEM 3. IF THIS STATEMENTS IS FILED PURSUANT TO RULE 13d-1(b), OR 13d-2(b),
CHECK WHETHER THE PERSON FILING IS A:
(a) / / Broker or dealer registered under section 15 of the Act.
(b) / / Bank as defined in section 3(a)(6) of the Act.
(c) / / Insurance company as defined in section 3(a)(19) of the Act.
(d) / / Investment company registered under section 8 of the Investment
Company Act.
(e) / / Investment adviser registered under section 203 of the Investment
Advisers Act of 1940.
(f) / / Employee benefit plan, pension fund which is subject to the
provisions of the Employee Retirement Income Security Act of 1974
or endowment fund; see Section 240.13d-1(b) (1) (ii) (F).
(g) / / Parent holding company, in accordance with section 240.13d-1(b)
(1) (ii) (G). (Note: See Item 7).
(h) / / Group, in accordance with section 240.13d-1(b) (1) (ii) (H).
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ITEM 4. OWNERSHIP:
(a) AMOUNT BENEFICIALLY OWNED:
450,001(1)
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(1) Mr. Sims is a party to a Right of First Refusal Agreement (the
"Agreement") between STB Systems, Inc. (the "Company"), William E. Ogle,
William D. Balthaser, Jr. and himself. Pursuant to the terms of the
Agreement, if Mr. Ogle, Mr. Sims or Mr. Balthaser proposes to sell any shares
of common stock registered in his name as of the date of the closing of the
Company's initial public offering,
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(b) PERCENT OF CLASS:
6.5%
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(c) NUMBER OF SHARES AS TO WHICH SUCH PERSON HAS:
(i) SOLE POWER TO VOTE OR TO DIRECT THE VOTE:
450,001(1)
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(ii) SHARED POWER TO VOTE OR TO DIRECT THE VOTE:
-0-
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(iii) SOLE POWER TO DISPOSE OR TO DIRECT THE DISPOSITION OF:
450,001(1)
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(iv) SHARED POWER TO DISPOSE OR TO DIRECT THE DISPOSITION OF:
-0-
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ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS:
If this statement is being filed to report the fact that as of the date hereof
the reporting person has ceased to be the beneficial owner of more than five
percent of the class of securities, check the following. / /
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ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON:
Not applicable.
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ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY:
Not applicable.
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ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP:
Not applicable.
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ITEM 9. NOTICE OF DISSOLUTION OF GROUP:
Not applicable.
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ITEM 10. CERTIFICATION:
Not applicable.
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which includes all of the 450,001 shares listed, then the Company will have a
right of first refusal to purchase such shares on terms similar to those
proposed. If the Company does not exercise its right to purchase all of the
shares of common stock proposed to be sold by either Mr. Sims or Mr.
Balthaser, then Mr. Ogle will have a right of first refusal to purchase those
shares of common stock that the Company does not wish to purchase. If the
foregoing rights of first refusal are not independently or collectively fully
exercised, then the shares not purchased may be sold in accordance with the
proposed terms of sale. Notwithstanding the foregoing, the Right of First
Refusal Agreement does not restrict the ability of Messrs. Ogle, Sims or
Balthaser to sell shares of common stock in the public market pursuant to
Rule 144 promulgated under the Securities Act of 1933, as amended.
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SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.
Dated: February 17, 1998
/s/ Mark S. Sims
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Mark S. Sims
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