<PAGE>
Filed Pursuant to Rule 424(c)
File Number 333-44743
PROSPECTUS SUPPLEMENT
to
Prospectus Dated March 9, 1998
2,022,570 SHARES
[CONSILIUM LOGO]
COMMON STOCK
($0.01 PAR VALUE PER SHARE)
This Prospectus Supplement supplements the Prospectus dated March 9,
1998 (the "Prospectus") of Consilium, Inc. (the "Company") relating to the
public offering and sale by certain stockholders of the Company (the "Selling
Stockholders"). This Prospectus Supplement should be read in conjunction with
the Prospectus, and this Prospectus Supplement is qualified in its entirety by
reference to the Prospectus except to the extent that the information herein
contained modifies or supersedes the information contained in the Prospectus.
Capitalized terms used in this Prospectus Supplement and not otherwise defined
herein shall have the meaning specified in the Prospectus.
The first sentence under "RISK FACTORS--DEPENDENCE ON SINGLE PRODUCT
LINE" on page 3 and the second sentence under "BUSINESS--PRODUCTS" on page 17
are hereby deleted and replaced in their entirety by the following sentence:
Revenues from licenses of the Workstream DFS family of products
historically have represented a substantial majority of the Company's
product revenues (approximately 77%, 86% and 89% of the Company's total
license revenue in fiscal 1995, 1996 and 1997, respectively).
The table provided under "CAPITALIZATION" on page 14 is hereby deleted
and replaced in its entirety by the following table:
<TABLE>
<CAPTION>
October 31, 1997
----------------
(In thousands)
<S> <C>
Stockholders' equity:
Preferred stock, $.01 par value
Authorized: 4,000,000 shares
Issued and outstanding; 3,000 shares $ -
Common stock, $.01 par value
Authorized: 25,000,000 shares
Issued and outstanding; 8,290,290 shares 83
Additional paid-in capital 29,261
Accumulated deficit (20,559)
Cumulative Translation adjustment (354)
-------
Total stockholders' equity $ 8,431
=======
</TABLE>
<PAGE>
The table provided under "QUARTERLY FINANCIAL INFORMATION" on page 45 is
hereby deleted and replaced in its entirety by the following table:
<TABLE>
<CAPTION>
QUARTER ENDED
--------------------------------------------------------------------------------
1996 1997 1998
---------------------------- --------------------------------------- -------
(In thousands, except per Apr. 30 Jul.31 Oct. 31 Jan. 31 Apr. 30 Jul.31 Oct. 31 Jan.31
share amounts) ------- ------ ------- ------- ------- ------ ------- -------
<S> <C> <C> <C> <C> <C> <C> <C> <C>
Revenues $ 7,779 $10,715 $10,494 $ 8,574 $11,092 $10,909 $10,060 $ 8,273
Cost of revenues 2,577 3,830 3,831 5,014 4,943 4,371 4,735 3,385
------- ------ ------- ------- ------- ------- ------- -------
Gross margin 5,202 6,885 6,663 3,560 6,149 6,538 5,325 4,888
Operating expenses 7,434 7,262 7,207 7,465 7,184 7,504 7,744 5,966
Income (loss) before income
taxes (2,152) (326) (477) (3,880) (1,068) (1,034) (2,481) (1,138)
Provision for income taxes 124 207 395 62 53 147 39 83
Net income (loss) (2,276) (533) (872) (3,942) (1,121) (1,181) (2,520) (1,221)
Net income (loss)
attributable to common (2,276) (533) (872) (3,942) (1,121) (1,181) (2,825) (1,587)
stock
Net income (loss) per
common share $ (0.29) $ (0.07) $ (0.11) $ (0.50) $ (0.14) $ (0.15) $ (0.34) $ (0.19)
Shares used in per share
calculation 7,773 7,838 7,895 7,928 7,963 8,018 8,254 8,374
</TABLE>
The date of this Prospectus Supplement is April 7, 1998.
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