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EXHIBIT 21
EXHIBIT A
RELEVANT SUBSIDIARIES OF PARENT HOLDING COMPANY
PART A: TCW ENTITIES
PARENT HOLDING COMPANY:
The TCW Group, Inc.
Robert Day (an individual who may be deemed to control The TCW Group,
Inc.)
RELEVANT SUBSIDIARIES THAT ARE PERSONS DESCRIBED IN RULE 13d-1(b):
(i) Trust Company of the West, a California corporation and a bank as
defined in Section 3(a)(6) of the Securities Exchange Act of
1934.
(ii) TCW Asset Management Company, a California corporation and an
Investment Adviser registered under Section 203 of the Investment
Advisers Act of 1940.
(iii)TCW Investment Management Company, fka TCW Funds Management,
Inc., a California corporation and an Investment Adviser
registered under Section 203 of the Investment Advisers Act of
1940.
(iv) TCW Capital Investment Corporation, a California corporation and
an Investment Adviser registered under Section 203 of the
Investment Advisers Act of 1940.
(v) TCW Advisors, Inc., a California corporation and an Investment
Adviser registered under Section 203 of the Investment Advisers
Act of 1940.
Note: No Common Stock of The Progressive Corporation is held directly by The
TCW Group, Inc. Other than the indirect holdings of The TCW Group,
Inc., no Common Stock of The Progressive Corporation is held directly
or indirectly by Robert Day, an individual who may be deemed to
control The TCW Group, Inc.
PART B: NON TCW ENTITIES
PARENT HOLDING COMPANY:
Robert Day (an individual who may be deemed to control the entities
described below which are not subsidiaries of The TCW Group, Inc.)
RELEVANT SUBSIDIARIES THAT ARE PERSONS DESCRIBED IN RULE 13d-1(b):
Oakmont Corporation, a California corporation and an Investment
Adviser registered under Section 203 of the Investment Advisers Act of
1940.
A-1
