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Exhibit 10.22

FIRST AMENDMENT TO LEASE
dated for reference purposes, as of January 23, 2002
by and between
MONROVIA TECHNOLOGY CAMPUS LLC,
a California limited liability company ("Landlord")
and
SEEBEYOND TECHNOLOGY CORPORATION ("Tenant").

R E C I T A L S:

        A.    Pursuant to that certain Lease dated as of November 28, 2000,
between Landlord and Tenant ("Lease"), Landlord agreed to construct and lease to
Tenant that certain improved premises located at 800 Royal Oaks, Monrovia,
California (unless otherwise specified herein, all terms are used herein as
defined in the Lease).

        B.    Landlord and Tenant hereby amend the Lease as follows;

        (1)  Square Footage of Premises. The Parties acknowledge that the
rentable square footage of the Premises for all purposes under the Lease shall
be increased to 120,000 square feet.

        (2)  Lease Term. Lease term shall be twelve (12) years and (0) months
commencing September 1, 2002.

        (3)  Option to Extend as stated in Paragraph 59 of Rider to Lease dated
November 28, 2000, shall now read:

a)Lessor hereby grants to Lessee the option to extend the term of this lease for
two (2) additional sixty (60) month periods commencing when the prior term
expires upon each and all of the following terms and conditions:

i.In order to exercise an option to extend, Lessee must give written notice of
such election to Lessor and Lessor must receive the same at least twenty-four
(24) months prior to the first 60 month renewal option and at least six
(6) months prior to the second 60 month renewal option. If proper notification
of the exercise of an option is not given and/or received, such option shall
automatically expire. Options may only be exercised consecutively.

ii.The provisions of Paragraph 39, including those relating to Lessee's Default
set forth in Paragraph 39.4 of the original Lease, are conditions of this
Option. Notwithstanding anything to the contrary in the Lease or Amendment,
Tenant shall be able to assign the aforementioned Option, without Landlord's
consent, as a result of a merger, acquisition or sale of all or substantially
all of Tenant's assets and/or stock.

iii.Except for the provisions of the Lease granting an option or options to
extend the term, all of the terms and conditions of this Lease except where
specifically modified by this option shall apply.

iv.Except for any entity which merges, controls, or acquires all or
substantially of Tenant's assets and/or stock, this Option is personal to the
original Lessee, and cannot be assigned or exercised by anyone other than said
original Lessee and only while the original Lessee is in full possession of the
Premises and without the intention of thereafter assigning or subletting.
Notwithstanding anything to the contrary in the Lease or Amendment, Tenant shall
be able to assign the

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aforementioned Option, without Landlord's consent, as a result of a merger,
acquisition or sale of all or substantially all of Tenant's assets and/or stock.

v.The monthly rent for each month of the option period shall be calculated as
set forth in Subsection II. Market Rental Value Adjustment(s) (MRV) of the Rider
to Lease dated November 28, 2000.

        (4)  Base Rent. Base rent shall be $1.67 per square foot NNN (tax,
insurance and maintenance) payable on the first date of each month commencing
September 1, 2002. Adjustment to Monthly Rent as stated in Paragraph 50 of the
Rider to Lease dated November 28, 2000, shall now read:

a)The monthly rental shall be increased beginning the 24th month of the lease
term and every 24 months thereafter. This increase shall be calculated by
multiplying the current rent per square foot by the percentage equal to the
increase, if any, in the Consumer Price Index of the United States Department of
Labor, Bureau of Labor Statistics, all items average for the Los
Angeles/Riverside/Orange County, California area (1982-84=100) (the "Index")
applicable to the first day of the month in which such increase takes effect,
i.e., every 24 months, as compared with the index for the 1st month of the term
of this lease. In no event shall the rental increase be less than 2% per year or
be more than 5% per year.

Paragraph 50.1 of the Rider to Lease dated November 28, 2000, shall remain
unchanged.

        (5)  Leasing Commission. Leasing commission is calculated to be
$1,024,634. Any reduction negotiated by tenant may be used for Montgomery Watson
Harza (MWH) relocation or additional Tenant Improvement allowance.

        (6)  Security Deposit.

a.Security Deposit shall be in the form of a Letter of Credit (in the same form
as previously submitted) in the amount of $2,404,800 which is the equivalent of
one year's rent. The Letter of Credit will be reduced to 2 months upon reaching
and maintaining a BBB+ credit rating. If the credit rating drops below a BBB+
credit rating (or no current rating is available) at any time during the term of
the Lease the tenant shall be required to supply a Letter of Credit in the
original amount of $2,404,800 within 10 days. This Letter of Credit is required
on or before April 1, 2002 of the mutual execution of this Amendment.

b.An additional Security Deposit shall be required in the form of a Letter of
Credit in the same form as previously submitted in the amount of $1,024,634
during the lease unless the Tenant has $50,000,000 in cash balances and has
shown a profit in the prior four quarters. A Letter of Credit for the entire
amount shall be due on September 1, 2002.

        (7)  Single Building Option. Tenant will reimburse Landlord $500,000 to
move MWH into the smaller building "B1". Landlord will invoice such costs as
incurred by the Landlord for the aforementioned expenses up to $500,000. Tenant
shall pay costs within 30 days of receiving an invoice, but no payment will be
required sooner than June 1, 2002. Tenant may draw down against their Tenant
Improvements (T.I.) allowance to accommodate this work or any reductions in the
commission agreed to by the brokers may be credited to this cost.

        (8)  The Tenant Improvement Allowance specified in Paragraph 51 of Rider
to Lease Dated November 28, 2000, shall be $3,000,000 or $25.00 per rentable
square foot of space in the building (the "Tenant Improvement Allowance").

        (9)  Landlord and Tenant agree that Nexus Construction will construct
Tenant Improvement work subject to City National Bank's approval.

        (10) Lease Otherwise Amended. Except as set forth above, the Lease is
otherwise deemed unamended.

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A G R E E M E N T:

        NOW, THEREFORE, in consideration of the mutual promises set forth herein
and in the Lease and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto hereby agree as
above:

        IN WITNESS WHEREOF, the parties hereto have executed this Second
Amendment as of the day and year first above written.

LANDLORD:   TENANT:
MONROVIA TECHNOLOGY CAMPUS LLC
 
SEEBEYOND TECHNOLOGY a California limited liability company   CORPORATION
By:
/s/ Blaine P. Fetter

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Blaine P. Fetter, Manager
 
By:
/s/ Barry J. Plaga

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By:
/s/ Reid G. Samuelson

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Reid G. Samuelson, Manager
 
Its:
SVP & CFO

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FIRST AMENDMENT TO LEASE dated for reference purposes, as of January 23, 2002 by
and between MONROVIA TECHNOLOGY CAMPUS LLC, a California limited liability
company ("Landlord") and SEEBEYOND TECHNOLOGY CORPORATION ("Tenant").
A G R E E M E N T