<PAGE>
Notice of Guaranteed Delivery
for
Tender of All Outstanding Shares of Common Stock
of the Series Designated
Donaldson, Lufkin & Jenrette, Inc.--DLJ Common Stock
of
Donaldson, Lufkin & Jenrette, Inc.
(Not to be Used for Signature Guarantees)
This Notice of Guaranteed Delivery, or one substantially in the form hereof,
must be used to accept the Offer (as defined below) (i) if certificates ("Share
Certificates") evidencing shares of common stock of the series designated
Donaldson, Lufkin & Jenrette, Inc.--DLJ Common Stock, par value $.10 per share
(the "Shares"), of Donaldson, Lufkin & Jenrette, Inc., a Delaware corporation
(the "Company"), are not immediately available, (ii) if Share Certificates and
all other required documents cannot be delivered to First Chicago Trust Company
of New York, as Depositary (the "Depositary"), prior to the Expiration Date (as
defined in Section 1 of the Offer to Purchase) or (iii) if the procedure for
delivery by book-entry transfer cannot be completed on a timely basis. This
Notice of Guaranteed Delivery may be delivered by hand or mail or transmitted by
telegram, telex or facsimile to the Depositary. See Section 3 of the Offer to
Purchase.
THE DEPOSITARY FOR THE OFFER IS:
FIRST CHICAGO TRUST COMPANY OF NEW YORK
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<S> <C> <C>
BY OVERNIGHT COURIER: BY MAIL: BY HAND:
Corporate Actions Corporate Actions c/o Securities Transfer and
40 Campanelli Drive P.O. Box 842010 Reporting Services, Inc.
Braintree, MA 02184 Boston, MA 02284-2010 Attention: Corporate Actions
1000 William Street, Galleria
New York, NY 10038
BY FACSIMILE:
(781) 575-4826/4827
CONFIRM BY TELEPHONE:
(781) 575-4816
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DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY TO AN ADDRESS OTHER THAN AS
SET FORTH ABOVE, OR TRANSMISSION OF INSTRUCTIONS VIA FACSIMILE OTHER THAN AS SET
FORTH ABOVE, WILL NOT CONSTITUTE A VALID DELIVERY.
THIS FORM IS NOT TO BE USED TO GUARANTEE SIGNATURES. IF A SIGNATURE ON A
LETTER OF TRANSMITTAL IS REQUIRED TO BE GUARANTEED BY AN "ELIGIBLE INSTITUTION"
UNDER THE INSTRUCTIONS THERETO, SUCH SIGNATURE GUARANTEE MUST APPEAR IN THE
APPLICABLE SPACE PROVIDED IN THE SIGNATURE BOX ON THE LETTER OF TRANSMITTAL.
<PAGE>
Ladies and Gentleman:
The undersigned hereby tenders to Diamond Acquisition Corp., a Delaware
corporation and an indirect wholly owned subsidiary of Credit Suisse Group, a
corporation organized under the laws of Switzerland, upon the terms and subject
to the conditions set forth in the Offer to Purchase, dated September 8, 2000
(the "Offer to Purchase"), and the related Letter of Transmittal (which,
together with the Offer to Purchase and any amendment or supplements thereto,
collectively constitute the "Offer"), receipt of each of which is hereby
acknowledged, the number of Shares specified below pursuant to the guaranteed
delivery procedure described in Section 3 of the Offer to Purchase.
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Number of Shares:
____________________________________________________________________________
Certificate Nos. (If Available):
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
Check box if Shares will be delivered by book-entry transfer:
/ / The Depository Trust Company
Account
No. ________________________________________________________________________
Date: ___________, 2000
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Name(s) of Holder(s):
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
(PLEASE TYPE OR PRINT)
____________________________________________________________________________
____________________________________________________________________________
Address
____________________________________________________________________________
Zip Code
____________________________________________________________________________
Area Code and Telephone No.
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
Signature(s) of Holder(s)
------------------------------------------
<PAGE>
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GUARANTEE
(NOT TO BE USED FOR SIGNATURE GUARANTEE)
The undersigned, a firm which is a member of a registered national
securities exchange or of the National Association of Securities
Dealers, Inc., or which is a commercial bank or trust company having an
office or correspondent in the United States, guarantees to deliver to the
Depositary Share Certificates evidencing the Shares tendered hereby, in
proper form for transfer, or confirmation of book-entry transfer of such
Shares into the Depositary's account at The Depository Trust Company, with
delivery of a Letter of Transmittal (or a manually signed facsimile thereof)
properly completed and duly executed, and any other required documents, all
within three New York Stock Exchange trading days of the date hereof.
The Eligible Institution that completes this form must communicate the
guarantee to the Depositary and must deliver the Letter of Transmittal and
Share Certificates to the Depositary within the time period shown herein.
Failure to do so could result in a financial loss to such Eligible
Institution.
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NAME OF FIRM TITLE
AUTHORIZED SIGNATURE ADDRESS ZIP
CODE
NAME:
PLEASE TYPE OR PRINT AREA CODE AND TELEPHONE NO.
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DO NOT SEND SHARE CERTIFICATES WITH THIS NOTICE.
SHARE CERTIFICATES SHOULD BE SENT WITH YOUR
LETTER OF TRANSMITTAL.
Dated: ____________, 2000
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