SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549



                                   __________



                                    FORM 8-A



               FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                    PURSUANT TO SECTION 12(b) OR (g) OF THE
                        SECURITIES EXCHANGE ACT OF 1934



                                 CATALYTICA, INC.
            ------------------------------------------------------
            (Exact name of Registrant as specified in its charter)



              Delaware                                     94-2262240
    -----------------------------                  --------------------------
(State of incorporation or organization)       (IRS Employer Identification No.)


                               430 Ferguson Drive
                            Mountain View, CA  94043
              (Address of principal executive offices) (Zip Code)

                        -------------------------------


Securities to be registered pursuant to Section 12(b) of the Act:

          Title of each class            Name of each exchange on which
          to be so registered            each class is to be registered
          -------------------            ------------------------------

                  None                                None



Securities to be registered pursuant to Section 12(g) of the Act:

                        Preferred Share Purchase Rights
                        -------------------------------
                                (Title of Class)

 
Item 1.   Description of Securities to be Registered.
          ------------------------------------------ 

          On October 23, 1996 pursuant to a Preferred Shares Rights Agreement
(the "Rights Agreement") between Catalytica, Inc. (the "Company") and
ChaseMellon Shareholder Services, L.L.P., as Rights Agent (the "Rights Agent"),
the Company's Board of Directors declared a dividend of one right (a "Right") to
purchase one one-thousandth share of the Company's Series A Participating
Preferred Stock ("Series A Preferred") for each outstanding share of Common
Stock, $.001 par value ("Common Shares"), of the Company. The dividend is
payable on November 29, 1996 (the "Record Date") to stockholders of record as of
the close of business on that date. Each Right entitles the registered holder to
purchase from the Company one one-thousandth of a share of Series A Preferred at
an exercise price of $25.00 (the "Purchase Price"), subject to adjustment.

          The following summary of the principal terms of the Rights Agreement
is a general description only and is subject to the detailed terms and
conditions of the Rights Agreement.  A copy of the Rights Agreement is attached
as Exhibit 1 to this Registration Statement and is incorporated herein by
reference.

                                      -2-

 
Rights Evidenced by Common Share Certificates
- ---------------------------------------------

          The Rights will not be exercisable until the Distribution Date
(defined below).  Certificates for the Rights ("Rights Certificates") will not
be sent to shareholders and the Rights will attach to and trade only together
with the Common Shares.  Accordingly, Common Share certificates outstanding on
the Record Date will evidence the Rights related thereto, and Common Share
certificates issued after the Record Date will contain a notation incorporating
the Rights Agreement by reference.  Until the Distribution Date (or earlier
redemption or expiration of the Rights), the surrender or transfer of any
certificates for Common Shares, outstanding as of the Record Date, even without
notation or a copy of the Summary of Rights being attached thereto, will also
constitute the transfer of the Rights associated with the Common Shares
represented by such certificate.


Distribution Date
- -----------------

          The Rights will separate from the Common Shares, Rights Certificates
will be issued and the Rights will become exercisable upon the earlier of:  (i)
10 days (or such later date as may be determined by a majority of the Board of
Directors, excluding directors affiliated with the Acquiring Person, as defined
below (the "Continuing Directors")) following a public announcement that a
person or group of affiliated or associated persons (an "Acquiring Person") has
acquired, or obtained the right to acquire, beneficial ownership of 20% or more
of the outstanding Common Shares, or (ii) 10 business days (or such later date
as may be determined by a majority of the Continuing 

                                      -3-

 
Directors then in office) following the commencement of, or announcement of an
intention to make, a tender offer or exchange offer the consummation of which
would result in the beneficial ownership by a person or group of 20% or more of
the outstanding Common Shares. The earlier of such dates is referred to as the
"Distribution Date."


Issuance of Rights Certificates; Expiration of Rights
- -----------------------------------------------------

          As soon as practicable following the Distribution Date, separate
Rights Certificates will be mailed to holders of record of the Common Shares as
of the close of business on the Distribution Date and such separate Rights
Certificates alone will evidence the Rights from and after the Distribution
Date.  All Common Shares issued prior to the Distribution Date will be issued
with Rights.  Common Shares issued after the Distribution Date may be issued
with Rights if such shares are issued (i) upon the conversion of outstanding
convertible debentures or any other convertible securities issued after adoption
of the Rights Agreement or (ii) pursuant to the exercise of stock options or
under employee benefit plans or arrangements unless such issuance would result
in (or create a risk that) such options, plans or arrangements would not qualify
for otherwise available special tax treatment.  Except as otherwise determined
by the Board of Directors, no other Common Shares issued after the Distribution
Date will be issued with Rights.  The Rights will expire on the earliest of (i)
October 23, 2006 (the "Final Expiration Date"), (ii) redemption or exchange of
the Rights as described below, or (iii) consummation of an acquisition of the
Company satisfying certain conditions by a person who acquired shares pursuant
to a Permitted Offer as described below.

                                      -4-

 
Initial Exercise of the Rights
- ------------------------------

          Following the Distribution Date, and until one of the further events
described below, holders of the Rights will be entitled to receive, upon
exercise and the payment of $25.00 per Right, one one-thousandth share of the
Series A Preferred.  In the event that the Company does not have sufficient
Series A Preferred available for all Rights to be exercised, or the Board
decides that such action is necessary and not contrary to the interests of
Rights holders, the Company may instead substitute cash, assets or other
securities for the Series A Preferred for which the Rights would have been
exercisable under this provision or as described below.


Right to Buy Company Common Shares
- ----------------------------------

          Unless the Rights are earlier redeemed, in the event that an Acquiring
Person becomes the beneficial owner of 20% or more of the Company's Common
Shares then outstanding (other than pursuant to a Permitted Offer), then proper
provision will be made so that each holder of a Right which has not theretofore
been exercised (other than Rights beneficially owned by the Acquiring Person,
which will thereafter be void) will thereafter have the right to receive, upon
exercise, Common Shares having a value equal to two times the Purchase Price.
Rights are not exercisable following the occurrence of an event as described
above until such time as the Rights are no longer redeemable by the Company as
set forth below.

                                      -5-

 
Right to Buy Acquiring Company Stock
- ------------------------------------

          Similarly, unless the Rights are earlier redeemed, in the event that,
after the Shares Acquisition Date (as defined below), (i) the Company is
acquired in a merger or other business combination transaction, or (ii) 50% or
more of the Company's consolidated assets or earning power are sold (other than
in transactions in the ordinary course of business), proper provision must be
made so that each holder of a Right which has not theretofore been exercised
(other than Rights beneficially owned by the Acquiring Person, which will
thereafter be void) will thereafter have the right to receive, upon exercise,
shares of common stock of the acquiring company having a value equal to two
times the Purchase Price (unless the transaction satisfies certain conditions
and is consummated with a person who acquired shares pursuant to a Permitted
Offer, in which case the Rights will expire).


Permitted Offer
- ---------------

          A Permitted Offer means a tender offer for all outstanding Common
Shares that has been determined by a majority of the Continuing Directors to be
adequate and otherwise in the best interests of the Company and its
stockholders.  Where the Board of Directors has determined that a tender offer
constitutes a Permitted Offer, the Rights will not become exercisable to
purchase Common Shares or shares of the acquiring company (as the case may be)
at the discounted price described above.

                                      -6-

 
Exchange Provision
- ------------------

          At any time after the acquisition by an Acquiring Person of 20% or
more of the Company's outstanding Common Shares and prior to the acquisition by
such Acquiring Person of 50% or more of the Company's outstanding Common Shares,
the Board of Directors of the Company may exchange the Rights (other than Rights
owned by the Acquiring Person), in whole or in part, at an exchange ratio of one
Common Share per Right.


Redemption
- ----------

          At any time on or prior to the close of business on the earlier of (i)
the 10th day following the acquisition by an Acquiring Person (the "Share
Acquisition Date") or such later date as may be determined by a majority of the
Continuing Directors then in office and publicly announced by the Company, or
(ii) the Final Expiration Date of the Rights, the Company may redeem the Rights
in whole, but not in part, at a price of $.001 per Right.


Adjustments to Prevent Dilution
- -------------------------------

          The Purchase Price payable, the number of Rights, and the number of
Series A Preferred or Common Shares or other securities or property issuable
upon exercise of the Rights are subject to adjustment from time to time in
connection with the dilutive issuances by the Company as set forth 

                                      -7-

 
in the Rights Agreement. With certain exceptions, no adjust ment in the Purchase
Price will be required until cumulative adjustments require an adjustment of at
least 1% in such Purchase Price.


Cash Paid Instead of Issuing Fractional Shares
- ----------------------------------------------

          No fractional portion less than integral multiples of one Common Share
will be issued upon exercise of a Right and in lieu thereof, an adjustment in
cash will be made based on the market price of the Common Shares on the last
trading date prior to the date of exercise.


No Stockholders' Rights Prior to Exercise
- -----------------------------------------

          Until a Right is exercised, the holder thereof, as such, will have no
rights as a stockholder of the Company (other than any rights resulting from
such holder's ownership of Common Shares), including, without limitation, the
right to vote or to receive dividends.


Amendment of Rights Agreement
- -----------------------------

          The provisions of the Rights Agreement may be supplemented or amended
by the Board of Directors in any manner prior to the close of business on the
Distribution Date without the approval of Rights holders.  After the
Distribution Date, the provisions of the Rights Agreement may be amended by the
Board in order to cure any ambiguity, defect or inconsistency, to make changes
which 

                                      -8-

 
do not adversely affect the interests of holders of Rights (excluding the
interests of any Acquiring Person), or to shorten or lengthen any time period
under the Rights Agreement; provided, however, that no amendment to adjust the
time period governing redemption shall be made at such time as the Rights are
not redeemable.


Rights and Preferences of the Series A Preferred
- ------------------------------------------------

          Series A Preferred purchasable upon exercise of the Rights will not be
redeemable.  Each share of Series A Preferred will be entitled to an aggregate
dividend of 1,000 times the dividend declared per Common Share.  In the event of
liquidation, the holders of the Series A Preferred will be entitled to a minimum
preferential liquidation payment equal to the greater of (i) $2,500 per share or
(ii) 1,000 times the per share amount to be distributed to the holders of the
Common Shares.  Each share of Series A Preferred will have 1,000 votes, voting
together with the Common Shares.  In the event of any merger, consolidation or
other transaction in which the Common Shares are changed or exchanged, each
share of Series A Preferred will be entitled to receive 1,000 times the amount
received per Common Share.  These rights are protected by customary anti-
dilution provisions.

          Because of the nature of the dividend, liquidation and voting rights
of the shares of Series A Preferred, the value of the one one-thousandth
interest in a share of Series A Preferred purchasable upon exercise of each
Right should approximate the value of one Common Share.

                                      -9-

 
Certain Anti-takeover Effects
- -----------------------------

          The Rights approved by the Board are designed to protect and maximize
the value of the outstanding equity interests in the Company in the event of an
unsolicited attempt by an acquiror to take over the Company, in a manner or on
terms not approved by the Board of Directors.  Takeover attempts frequently
include coercive tactics to deprive the Company's Board of Directors and its
stockholders of any real opportunity to determine the destiny of the Company.
The Rights have been declared by the Board in order to deter such tactics,
including a gradual accumulation of shares in the open market of a 20% or
greater position to be followed by a merger or a partial or two-tier tender
offer that does not treat all stockholders equally.  These tactics unfairly
pressure stockholders, squeeze them out of their investment without giving them
any real choice and deprive them of the full value of their shares.

          The Rights are not intended to prevent a takeover of the Company and
will not do so. The Rights may be redeemed by the Company at $.001 per Right
within ten days (or such later date as may be determined by a majority of the
Board of Directors then in office, excluding directors affiliated with an
Acquiring Person) after the accumulation of 20% or more of the Company's shares
by a single acquiror or group. Accordingly, the Rights should not interfere with
any merger or business combination approved by the Board of Directors.

                                      -10-

 
          Issuance of the Rights does not in any way weaken the financial
strength of the Company or interfere with its business plans.  The issuance of
the Rights themselves has no dilutive effect, will not affect reported earnings
per share, should not be taxable to the Company or to its shareholders, and will
not change the way in which the Company's shares are presently traded.  The
Company's Board of Directors believes that the Rights represent a sound and
reasonable means of addressing the complex issues of corporate policy created by
the current takeover environment.

          However, the Rights may have the effect of rendering more difficult or
discouraging an acquisition of the Company deemed undesirable by the Board of
Directors.  The Rights may cause substantial dilution to a person or group that
attempts to acquire the Company on terms or in a manner not approved by the
Company's Board of Directors, except pursuant to an offer conditioned upon the
negation, purchase or redemption of the Rights.


Item 2.   Exhibits.
          -------- 

          1.        Preferred Shares Rights Agreement, dated as of October 23,
                    1996 between Catalytica, Inc. and ChaseMellon Shareholder
                    Services, L.L.P., including the Certificate of Designation,
                    the form of Rights Certificate and the Summary of Rights
                    attached thereto as Exhibits A, B and C, respectively.

                                      -11-

 
                                   SIGNATURE

          Pursuant to the requirements of Section 12 of the Securities Exchange
Act of 1934, the Registrant has duly caused this Registration Statement to be
signed on its behalf by the undersigned, thereto duly authorized.

                                       Catalytica, Inc.


Date: November 18, 1996
                                       By:/s/ Ricardo B. Levy
                                          ----------------------------------
                                          Richard B. Levy, President and Chief
                                          Executive Officer

 
                                 EXHIBIT INDEX
 


                                                             Page Number Under
Exhibit                                                      Sequential Numbering
   No.                          Exhibit                      System
- -------                         -------                      -------------------- 
                                                       
1                               Preferred Shares Rights
                                Agreement dated as of
                                October 23, 1996, between
                                Catalytica, Inc. and
                                ChaseMellon Shareholder
                                Services, L.L.P.,
                                including the form of
                                Rights Certificate and
                                the Certificate of
                                Designation, the Summary
                                of Rights Attached
                                thereto as Exhibits A, B
                                and C, respectively.