UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
(Rule 13d-102)
INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
TO RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO
FILED PURSUANT TO 13d-2
(Amendment No. )*
Iron Mountain Incorporated
(Name of Issuer)
Common Stock, $.01 par value
(Title of Class of Securities)
46284P 10 4
(CUSIP Number)
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which
this Schedule is filed:
|_| Rule 13d-1(b)
|X| Rule 13d-1(c)
|_| Rule 13d-1(d)
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* 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).
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SCHEDULE 13G
CUSIP No. 46284P 10 4 Page 2 of 6 Pages
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Kent P. Dauten
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(See Instructions) (a) |_|
(b) |_|
3 SEC USE ONLY
4 CITIZENSHIP OR PLACE OF ORGANIZATION
U.S.A.
5 SOLE VOTING POWER
NUMBER OF
SHARES 1,410,146
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
6 SHARED VOTING POWER
595
7 SOLE DISPOSITIVE POWER
1,410,146
8 SHARED DISPOSITIVE POWER
595
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,410,741 Shares1
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES (See Instructions) |_|
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
4.8%
12 TYPE OF REPORTING PERSON (See Instructions)
IN
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1 Includes 919 shares that Mr. Dauten has the right to acquire pursuant
to currently exercisable options (or options becoming exercisable
within 60 days of the date of this Schedule 13G). Also includes 595
shares as to which Mr. Dauten has shared voting and dispositive power
as a partner of Madison Dearborn Partners IV, which has a limited
partnership interest in GKH Investments, L.P., a stockholder of Iron
Mountain Incorporated. All numbers in this Schedule 13G are adjusted to
give effect to a 3 for 2 split of Iron Mountain Incorporated common
stock that occurred in July 1998.
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SCHEDULE 13G
CUSIP No. 46284P 10 4 Page 3 of 6 Pages
Item 1(a). Name of issuer:
Iron Mountain Incorporated
Item 1(b). Address of Issuer's Principal Executive Offices:
745 Atlantic Avenue, Boston, Massachusetts 02111
Item 2(a). Name of Person Filing:
Kent P. Dauten
Item 2(b). Address of Principal Business Office or, if none, Residence:
c/o Keystone Capital, Inc., 520 Lake Cook Road, Suite 650, Deerfield,
Illinois 60015
Item 2(c). Citizenship:
U.S.A.
Item 2(d). Title of Class of Securities:
Common Stock, $.01 par value
Item 2(e). CUSIP Number:
46284P 10 4
Item 3. If the Statement is being filed pursuant to Rule 13d-1(b), or 13d-2(b)
or (c), check whether the filing person 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 13d-1(b)(1)(ii)(E);
(f) / / An employee benefit plan or endowment fund in accordance with
13d-1(b)(1)(ii)(F);
(g) / / A parent holding company or control person in accordance with
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);
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SCHEDULE 13G
CUSIP No. 46284P 10 4 Page 4 of 6 Pages
(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 13d-1(b)(1)(ii)(J).
If this statement is filed pursuant to 13d-1(c), check this box. |X|
Item 4. Ownership.
(a) Amount beneficially owned:
1,410,741 shares2
(b) Percent of class:
4.8%
(c) Number of shares as to which such person has:
(i) Sole power to vote or direct the vote:
1,410,146
(ii) Shared power to vote or direct the vote:
595
(iii) Sole power to dispose or to direct the disposition of:
1,410,146
(iv) Shared power to dispose or to direct the disposition of:
595
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 had ceased to be the beneficial owner of more than
five percent of the class of securities, check the following [ X ].
Item 6. Ownership of More than Five Percent on Behalf of Another Person.
Not applicable.
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2 See footnote 1.
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SCHEDULE 13G
CUSIP No. 46284P 10 4 Page 5 of 6 Pages
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 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.
<PAGE>
SCHEDULE 13G
CUSIP No. 46284P 10 4 Page 6 of 6 Pages
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.
January 25, 1999
(Date)
/s/ Kent P. Dauten
(Signature)
Kent P. Dauten
(Name/Title)
The original statement shall be signed by each person on whose behalf the
statement is filed or his authorized representative. If the statement is signed
on behalf of a person by his authorized representative other than an executive
officer or general partner of the filing person, evidence of the
representative's authority to sign on behalf of such person shall be filed with
the statement, provided, however, that a power of attorney for this purpose
which is already on file with the Commission may be incorporated by reference.
The name and any title of each person who signs the statement shall be typed or
printed beneath his signature.
Note. Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
for whom copies are to be sent.
Attention. Intentional misstatements or omissions of fact constitute federal
criminal violations (See 18 U.S.C. 1001).
