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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 3 )*
DOCUMENTUM INC
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(Name of Issuer)
COMMON
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(Title of Class of Securities)
256159104
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(CUSIP Number)
Check the following box if a fee is being paid with this statement [ ]. (A fee
is not required only if the filing person: (1) has a previous statement on file
reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7).
*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. 256159104 13G PAGE 2 OF 4 PAGES
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(1) NAMES OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
SENECA CAPITAL MANAGEMENT LLC
94-3239114
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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
CALIFORNIA
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(5) SOLE VOTING POWER
NUMBER OF 823,850
SHARES --------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
OWNED BY N/A
EACH --------------------------------------------------------
REPORTING (7) SOLE DISPOSITIVE POWER
PERSON WITH 823,850
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(8) SHARED DISPOSITIVE POWER
N/A
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(9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
823,850
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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
4.9%
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(12) TYPE OF REPORTING PERSON*
IA
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CUSIP NO. 256159104 13G PAGE 3 OF 4 PAGES
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ITEM 1(a). Name of Issuer:
DOCUMENTUM INC
ITEM 1(b). Address of Issuer's Principal Executive Offices:
5671 GIBRALTOR DRIVE
PLEASANTON, CA 94588-8547
ITEM 2(a) Name of Person Filing:
SENECA CAPITAL MANAGEMENT LLC
ITEM 2(b) Address of Principal Business Office or, if none, Residence:
909 MONTGOMERY ST., #500
SAN FRANCISCO, CA 94133
ITEM 2(c) Citizenship:
USA
ITEM 2(d) Title of Class of Securities:
COMMON
ITEM 2(e) CUSIP Number:
256159104
ITEM 3. If this statement is filed pursuant to Rule 13-d(b), or 13-d(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)[x] 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 sections 240.13d-1(b)(1)(ii)(F)
(g)[ ] Parent Holding Company, in accordance with sections
240.13d-1(b)(ii)(G)(Note:See Item 7)
(h)[ ] Group, in accordance with sections 240.13d-1(b)(1)(ii)(H)
ITEM 4. OWNERSHIP
If the percent of the class owned , as of December 31 of the year covered by
the statement, or as of the last day of any month described in Rule 13-d1(b)(2),
if applicable, exceeds five percent, provide the following information as of
that date and identify those shares which there is a right to acquire.
(a) Amount Beneficially Owned: 823,850
(b) Percent of Class: 4.9%
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CUSIP NO. 256159104 13G PAGE 4 OF 4 PAGES
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(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote: 823,850
(ii) shared power to vote or to direct the vote: N/A
(iii) sole power to dispose or to direct the disposition of: 823,850
(iv) shared power to dispose or to direct the disposition of: N/A
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 [x].
ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.
NOT APPLICABLE
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
NOT APPLICABLE
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.
8-5-1999
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Date
/s/ Sandra J. Westoff
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Signature
Sandra J. Westoff
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Name/Title
