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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
Cholestech Corp.
(Name of Issuer)
Common Shares
(Title of Class of Securities)
170393102
(CUSIP Number)
December 31, 2001
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
/_X_/ Rule 13d-1(b)
* 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 disclosures provided in a prior cover page.
The information required on 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).
Potential persons who are to respond to the collection of information
contained in this form are not required to respond unless the form displays
a currently valid OMB control number.
SEC 1745 (3-98) Page 1 of 7
CUSIP No. 170393102 13G Page 2 of 7
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1 NAME OF REPORTING PERSONS
IRS IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
RS Investment Management Co. LLC
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
(a)/ /
(b)/ /
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3 SEC USE ONLY
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4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
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NUMBER OF 5 SOLE VOTING POWER
SHARES -0-
BENEFICIALLY ---------------------------------------
OWNED BY 6 SHARED VOTING POWER
EACH -771,300-
REPORTING ---------------------------------------
PERSON 7 SOLE DISPOSITIVE POWER
WITH -0-
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8 SHARED DISPOSITIVE POWER
-771,300-
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9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
-771,300-
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10 CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See
Instructions)
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11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
6.4%
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12 TYPE OF REPORTING PERSON (See Instructions)
OO, HC
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CUSIP No. 170393102 13G Page 3 of 7
ITEM 1.
(a) The name of the issuer is Cholestech Corp. (the "Issuer").
(b) The principal executive office of the Issuer is located at:
3347 Investment Blvd., Hayward, CA 94545.
ITEM 2.
(a-c) See Annex I for information on the persons filing this
statement (collectively, the "Filers")
(d) This statement relates to shares of common stock of the Issuer
(the "Stock").
(e) The CUSIP number of the Stock is 170393102.
CUSIP No. 170393102 13G Page 4 of 7
ITEM 3. If this statement is filed pursuant to rule 240.13d-1(b) or
240.13d-2(b) or (c), check whether the person filing is a:
(a) ___ Broker or dealer registered under section 15 of the Act (15
U.S.C. 78o).
(b) ___ Bank as defined in section 3(a)(6) of the Act (15 U.S.C.
78c).
(c) ___ Insurance company as defined in section 3(a)(19) of the Act
(15 U.S.C. 78c).
(d) ___ Investment company registered under section 8 of the
Investment Company Act of 1940 (15 U.S.C. 80a-8).
(e) ___ An investment adviser in accordance with 240.13d-
1(b)(1)(ii)(E).
(f) ___ An employee benefit plan or endowment fund in accordance
with 240.13d-1(b)(1)(ii)(F).
(g) _X_ A parent holding company or control person in accordance
with 240.13d-1(b)(1)(ii)(G)
(h) ___ A savings association as defined in section 3(b) of the
Federal Deposit Insurance Act (12 U.S.C. 1813).
(i) ___ A church plan that is excluded from the definition of an
investment company under section 3(c)(14) of the Investment Company Act of
1940 (15 U.S.C. 80a-3).
(j) ___ Group, in accordance with section 240.13d-1(b)(1)(ii)(J)
CUSIP No. 170393102 13G Page 5 of 7
ITEM 4. OWNERSHIP
See Items 5-9 and 11 on the cover page for each Filer.
ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS
Not applicable.
ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON
The Filer is a registered investment adviser whose clients have the right
to receive or the power to direct the receipt of dividends from, or the
proceeds from the sale of, the Stock. No individual client's holdings of
the Stock are more than five percent of the outstanding Stock.
CUSIP No. 170393102 13G Page 6 of 7
ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY
RS Investment Management, LP (PN,IA)
RS Investment Management, Inc. (CO,IA)
ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
Not applicable
ITEM 9. NOTICE OF DISSOLUTION OF GROUP
Not applicable.
ITEM 10. CERTIFICATION
By signing below I certify that, to the best of my knowledge and belief,
the securities referred to above were acquired and are held in the ordinary
course of business and were not acquired and are not held for the purpose
of or with the effect of changing or influencing the control of the issuer
of the securities and were not acquired and are not held in connection with
or as a participant in any transaction having that purpose or effect.
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 8, 2002
RS INVESTMENT MANAGEMENT CO. LLC
By: /s/ G. Randall Hecht
G. Randall Hecht
Chief Executive Officer
CUSIP No. 170393102 13G Page 7 of 7
Annex I
The filers are:
I. (a) RS Investment Management Co. LLC, is a Delaware Limited Liability
Company.
(b) holding company