<PAGE> 1
Filed pursuant to Rule 424(b)(3)
Registration No. 333-53457
SENSORMATIC ELECTRONICS CORPORATION
SUPPLEMENT NUMBER TWO TO PROSPECTUS DATED DECEMBER 20, 1999
This Supplement is a part of the Prospectus dated December 20,
1999 relating to 6,900,000 Depositary Shares ("Depositary Shares"), each
representing a one-tenth interest in a share of 6 1/2% Convertible Preferred
Stock, par value $.01 per share ("Preferred Stock"), of Sensormatic Electronics
Corporation ("Sensormatic"). This Supplement amends and supersedes Supplement
Number One to the Prospectus dated January 24, 2000. The Prospectus (as well as
this Supplement) also relates to 690,000 shares of the Preferred Stock and
certain shares of Common Stock, par value $.01 per share, of Sensormatic, issued
or issuable in payment of dividends and certain premium payments with respect to
the Preferred Stock. Defined terms contained in this Supplement have the
meanings assigned to them in the Prospectus.
The following updates certain information concerning the
Selling Securityholders and the securities of Sensormatic held by them, as set
forth in the Prospectus under the caption "Selling Security Holders", based on
information received from the Selling Securityholders named below after the date
of the Prospectus and prior to the date hereof. The information concerning the
Selling Securityholders in the Prospectus is not being updated to show any sales
by any of them. Except as amended or supplemented hereby or as contemplated by
the preceding sentence, the information in the Prospectus concerning the Selling
Securityholders and the securities of Sensormatic held by them remains in full
force and effect.
<TABLE>
<CAPTION>
- ----------------------- ------------------------------------ ----------------------------------------------------
Common Stock Depositary Shares
- ----------------------- ------------------------------------ ----------------------------------------------------
Name of Selling Beneficially Offered Beneficially Beneficially Owned Offered Beneficially
Securityholder(1) Owned Prior for Owned Prior to for Owned After
to This Sale After This Offering Sale This Offering
Offering This
Offering
- ----------------------- ------------------------------------ ----------------------- ----------------------------
No. % of No. of % of
of Shares Depositary Depositary
Shares Shares Shares
- ------------------------------------------------------------ ----------------------- ----------------------------
<S> <C> <C> <C> <C> <C> <C> <C>
AIG SoundShore Holdings
Ltd. (former SoundShore
Holdings, Ltd.) 105,926 * 105,926 0 75,500 1 75,500 0
- ------------------------------------------------------------ ----------------------------------------------------
Argent Classic
Convertible Arbitrage
Fund L.P. 191,091 * 191,091 0 145,000 2.1 145,000 0
- ------------------------------------------------------------ ----------------------------------------------------
Calamos Asset
Management 27,674 * 27,674 0 21,000 * 21,000 0
- ------------------------------------------------------------ ----------------------------------------------------
Forest Fulcrum
Fund L.P. 54,657 * 54,657 0 41,474 * 41,474 0
- ------------------------------------------------------------ ----------------------------------------------------
Forest Global
Convertible Fund
Series A-5 62,632 * 62,632 0 47,526 * 47,526 0
- ------------------------------------------------------------ ----------------------------------------------------
Jefferies & Company,
Inc. 290,578 * 290,578 0 220,000 3.1 220,000 0
- ------------------------------------------------------------ ----------------------------------------------------
Prudential Securities 6,014 * 6,014 0 0 * 0 0
- ------------------------------------------------------------ ----------------------------------------------------
Reliant Trading 131,786 * 131,786 0 100,000 1.4 100,000 0
- ------------------------------------------------------------ ----------------------------------------------------
Shepherd Investments
International, Ltd. 2,351 * 2,351 0 0 * 0 0
- ------------------------------------------------------------ ----------------------------------------------------
Shepherd Trading
Limited 197,680 * 197,680 0 150,000 2.1 150,000 0
- ------------------------------------------------------------ ----------------------------------------------------
Stark International 2,351 * 2,351 0 0 * 0 0
- ------------------------------------------------------------ ----------------------------------------------------
Total 1,072,740 * 1,072,740 0 800,500 11.6 800,500 0
- ------------------------------------------------------------ ----------------------------------------------------
</TABLE>
<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------
6 1/2% Convertible Preferred Stock
- -----------------------------------------------------------------------------
Name of Selling Beneficially Owned Offered Beneficially
Securityholder(1) Prior to for Owned After
This Offering Sale This Offering
- -----------------------------------------------------------------------------
No. of % of
Shares of Preferred
Preferred Stock
Stock
- -----------------------------------------------------------------------------
<S> <C> <C> <C> <C>
AIG SoundShore Holdings
Ltd. (former SoundShore
Holdings, Ltd.) 7,500 1 7,500 0
- -----------------------------------------------------------------------------
Argent Classic
Convertible Arbitrage
Fund L.P. 14,500 2.1 14,500 0
- -----------------------------------------------------------------------------
Calamos Asset
Management 2,100 * 2,100 0
- -----------------------------------------------------------------------------
Forest Fulcrum
Fund L.P. 4,147 * 4,147 0
- -----------------------------------------------------------------------------
Forest Global
Convertible Fund
Series A-5 4,752 * 4,752 0
- -----------------------------------------------------------------------------
Jefferies & Company,
Inc. 22,000 3.1 22,000 0
- -----------------------------------------------------------------------------
Prudential Securities 0 * 0 0
- -----------------------------------------------------------------------------
Reliant Trading 10,000 1.4 10,000 0
- -----------------------------------------------------------------------------
Shepherd Investments
International, Ltd. 0 * 0 0
- -----------------------------------------------------------------------------
Shepherd Trading
Limited 15,000 2.1 15,000 0
- -----------------------------------------------------------------------------
Stark International 0 * 0 0
- -----------------------------------------------------------------------------
Total 79,999 11.6 79,999 0
- -----------------------------------------------------------------------------
</TABLE>
THE DATE OF THIS SUPPLEMENT IS JANUARY 25, 2000
