SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
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Under the Securities Exchange Act of 1934
SCHEDULE 13G
INFORMATION STATEMENT PURSUANT TO RULES 13d-1 AND 13d-2
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Clean Harbors, Inc.
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(Name of Issuer)
Common Stock
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(Title of Class of Securities)
184496107
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(CUSIP Number)
July 31, 2004
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(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)
|_| Rule 13d-1(c)
|_| Rule 13d-1(d)
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Page 1 of 6 Pages
SCHEDULE 13G
CUSIP No. 184496107 Page 2 of 6 Pages
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1) NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Gilder, Gagnon, Howe & Corporation LLC
13-3174112
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2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) |_|
(b) |_|
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3) SEC USE ONLY
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4) CITIZENSHIP OR PLACE OF ORGANIZATION
New York
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5) SOLE VOTING POWER
NUMBER 18,800
OF ----------------------------------------------
SHARES 6) SHARED VOTING POWER
BENEFICIALLY
OWNED BY None
EACH ----------------------------------------------
REPORTING 7) SOLE DISPOSITIVE POWER
PERSON
WITH None
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8) SHARED DISPOSITIVE POWER
718,685
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9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
718,685
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10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
|_|
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11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
5.1%
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12) TYPE OF REPORTING PERSON
BD
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Schedule 13G
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Item 1(a). Name of Issuer:
Clean Harbors, Inc.
Item 1(b). Address of Issuer's Principal Executive Offices:
1501 Washington Street
Braintree, MA 02184
Item 2(a). Name of Person Filing:
Gilder, Gagnon, Howe & Corporation LLC
Item 2(b). Address of Principal Business Office or, if None, Residence:
1775 Broadway, 26th Floor
New York, NY 10019
Item 2(c). Citizenship:
New York
Item 2(d). Title of Class of Securities:
Common Stock
Item 2(e). CUSIP Number:
184496107
Item 3. If this statement is filed pursuant to ss.ss. 240.13d-1(b), or
240.13d-2(b) or (c), check whether the person filing is a:
(a) [x] 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) |_| Investment Adviser in accordance with ss.
240.13d-1(b)(1)(ii)(E)
(f) |_| Employee benefit plan or endowment fund in accordance
with ss. 240.13d-1(b)(1)(ii)(F)
(g) |_| Parent Holding Company or control person in accordance
with ss.240.13d-1(b)(ii)(G)
(h) |_| Savings Association as defined in ss.3(b) of the Federal
Deposit Insurance Act (12 U.S.C. 1813)
(i) |_| Church plan that is excluded from the definition of an
investment company under ss.3(c)(15) of the Investment
Company Act of 1940 (15 U.S.C. 80a-3)
(j) |_| Group, in accordance with ss.240.13d-1(b)(ii)(J)
Item 4. Ownership.
(a) Amount beneficially owned: 718,685
(b) Percent of class: 5.1%
(c) Number of shares as to which such person has:
(i) Sole power to vote or to direct the vote: 18,800
(ii) Shared power to vote or to direct the vote: None
(iii) Sole power to dispose or to direct the disposition
of: None
(iv) Shared power to dispose or to direct the
disposition of: 718,685
The shares reported include 699,885 shares held in customer accounts
over which partners and/or employees of the Reporting Person have
discretionary authority to dispose of or direct the disposition of
the shares and 18,800 shares held in the account of the
profit-sharing plan of the Reporting Person ("the Profit-Sharing
Plan").
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 owners of the accounts (including the Profit-Sharing Plan) in which the
shares reported on this Schedule are held have the right to receive or the power
to direct the receipt of dividends from, or the proceeds from the sale of, such
securities.
Item 7. Identification and Classification of the Subsidiary Which Acquired
the Security Being Reported on by the Parent Holding Company.
Not applicable
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 in the ordinary course of
business and were not acquired for the purpose of and do not have the effect of
changing or influencing the control of the issuer of such securities and were
not acquired in connection with or as a participant in any transaction having
such purposes or effect.
SIGNATURE
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After reasonable inquiry and to the best knowledge and belief of the
undersigned, the undersigned certifies that the information set forth in this
Statement is true, complete and correct.
August 10, 2004
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Date
/s/ Walter Weadock
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Signature
Walter Weadock, Member
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Name/Title