Edgar Filing: SPECTRASITE HOLDINGS INC

PROSPECTUS SUPPLEMENT NO. 6
(To Prospectus dated February 9, 2001)

SPECTRASITE HOLDINGS, INC.
6 3/4% SENIOR CONVERTIBLE NOTES DUE 2010

This prospectus supplement no. 6 supplements and amends the prospectus
dated February 9, 2001, as supplemented by prospectus supplement no. 1 dated
February 20, 2001, prospectus supplement no. 2 dated March 7, 2001, prospectus
supplement no. 3 dated March 15, 2001, prospectus supplement no. 4 dated March
26, 2001 and prospectus supplement no. 5 dated April 6, 2001, relating to the
resale of SpectraSite's 6 3/4% senior convertible notes due 2010 and the shares
of SpectraSite common stock, par value $.001 per share, issuable upon conversion
of the notes.

The table and footnotes on pages 35 through 38 of the prospectus set forth
information with respect to the selling holders and the respective amounts of
convertible notes held and shares of common stock beneficially owned by each
selling holder that may be offered pursuant to the prospectus, as supplemented
and amended. This prospectus supplement amends the table in the prospectus, as
supplemented and amended, by (i) adding South Dakota Retirement System and
Lipper Convertibles, L.P. (Series B), (ii) removing Allstate Insurance Company,
Allstate Life Insurance Company, Amaranth Securities L.L.C., DEAM Convertible
Arbitrage Fund, Lancer Securities Cayman LTD, Paloma Securities LLC, PGEP III
LLC and The Grable Foundation, and (iii) replacing the information contained in
the table for Alta Partners Holdings, LDC, CIBC World Markets International
Arbitrage and for the category "Any other holder of notes or future transferee,
pledgee, donee or successor of any holder" with the corresponding information
set forth below.

(footnotes on following page)

The prospectus, together with this prospectus supplement no. 6, prospectus
supplement no. 5, prospectus supplement no. 4, prospectus supplement no. 3,
prospectus supplement no. 2 and prospectus supplement no. 1, constitutes the
prospectus required to be delivered by Section 5(b) of the Securities Act of
1933, as amended, with respect to offers and sales of the convertible notes and
the common stock issuable upon conversion of the convertible notes.

Prospective investors should carefully review "Risk Factors" beginning on
page 5 of the prospectus for a discussion of risks that should be considered
when investing in the notes or our common stock.

Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or passed upon the
adequacy or accuracy of this prospectus or any accompanying prospectus
supplement. Any representation to the contrary is a criminal offense.

The date of this prospectus supplement is April 20, 2001.

(1) CIBC World Markets International Arbitrage is an affiliate of Canadian
Imperial Bank of Commerce. Of the 10,551,885 shares reported as
beneficially owned by CIBC World Markets International Arbitrage,
10,000,000 are held by other affiliates of Canadian Imperial Bank of
Commerce. An affiliate of Canadian Imperial Bank of Commerce, CIBC World
Markets, was an initial purchaser or placement agent for our 12% senior
discount notes due 2008, our 11 1/4% senior discount notes due 2009, our 12
7/8% senior discount notes due 2010, our 10 3/4% senior notes due 2010 and
our 12 1/2% senior notes due 2010. CIBC World Markets was also a co-manager
of our public common stock offerings in February 2000 and July 2000. In
addition, CIBC World Markets is an agent and a lender under our credit
facility. CIBC World Markets and its affiliates received customary fees for
these services. The Trimaran group purchased 4,000,000 shares of our common
stock in a private placement at a purchase price of $18.75 per share and
received warrants to purchase 1,500,000 shares of common stock at exercise
prices ranging from $21.56 per share to $28.00 per share. Certain investors
in the Trimaran group are affiliates of CIBC World Markets. Andrew R. Heyer
is a Managing Director of CIBC World Markets and a managing member of
Trimaran Fund Management, L.L.C., the investment advisor to Trimaran Fund
II L.L.C. Mr. Heyer was a member of Holdings' board of directors from April
1999 until November 2000. Our stockholders' agreement, as amended, provides
that so long as the Trimaran group and Canadian Imperial Bank of Commerce
and their respective affiliates own collectively 5% or more of Holdings'
outstanding stock, Canadian Imperial Bank of Commerce affiliates and
Caravelle Investment Fund, L.L.C. collectively will have the right to
designate a representative to attend meetings of Holdings' board of
directors as an observer.

(2) We may from time to time include additional selling holders and information
about such selling holders' plans of distribution in future supplements to
the prospectus, if required. The amounts provided assume that any holders
of the notes, or any future transferees, pledgees, donees or successors of
or from any such other holders of notes, do not beneficially own any common
stock other than the common stock issuable upon conversion of the notes at
the conversion rate.

The following table sets forth, as of April 20, 2001, information regarding
the beneficial ownership of the notes and our common stock by the selling
holders. The information is based on information provided by or on behalf of the
selling holders through April 20, 2001.

Shares of
Common
Principal Principal Stock Shares of Shares of
Amount Amount of Beneficially Common Common Stock
of Notes Notes Owned Owned Stock Beneficially
Owned and After the Prior to Offered Owned After
Selling Securityholders Offered(1) Offering(2) Offering Hereby(3)(4) the Offering(2)
--------------------------------------- ---------- ----------- ------------ ------------ ----------------
AIG SoundShore Opportunity Holding Fund
Ltd. ................................ $ 1,000,000 none 46,377 46,377 none
AIG SoundShore Strategic Holding Fund
Ltd. ................................ 5,000,000 none 231,885 231,885 none
Alpine Associates...................... 5,600,000 none 259,711 259,711 none
Alpine Partners, L.P. ................. 900,000 none 41,740 41,740 none
Alta Partners Holdings, LDC............ 6,000,000 none 278,261 278,261 none
Bank America Pension Plan.............. 4,000,000 none 185,508 185,508 none
British Virgin Islands Social Security
Board................................ 49,000 none 2,273 2,273 none
CIBC World Markets International
Arbitrage (5)........................ 11,900,000 none 10,551,885 551,885 10,000,000
Deephaven Domestic Convertible Trading
Ltd. (6)............................. 3,000,000 none 139,131 139,131 none
Deeprock & Co. ........................ 2,500,000 none 115,943 115,943 none
Deutsche Banc Alex. Brown (7).......... 11,367,000 none 2,614,298 527,166 2,087,132
DIA High Yield Bond Fund (8)........... 250,000 none 11,595 11,595 none
Eaton Vance High Income Portfolio (9).. 2,860,000 none 132,638 132,638 none
Eaton Vance Income Fund of Boston (10). 1,540,000 none 71,421 71,421 none
First Union International Capital
Markets.............................. 5,000,000 none 231,885 231,885 none
Global Bermuda Limited Partnership..... 2,900,000 none 134,493 134,493 none
Hallmark Master Trust High Yield (11).. 250,000 none 11,595 11,595 none
JMG Capital Partners, LP............... 3,500,000 none 162,319 162,319 none
JMG Triton Offshore Fund, Ltd. ........ 3,500,000 none 162,319 162,319 none
KBC Financial Products USA............. 2,100,000 none 97,392 97,392 none
Lakeshore International Ltd. .......... 4,100,000 none 190,145 190,145 none
Lehman Brothers Inc. (12).............. 1,000,000 none 46,377 46,377 none
Lipper Convertibles, L.P. ............. 11,367,000 none 527,166 527,166 none
Lipper Convertibles, L.P. (Series B)... 581,000 none 26,945 26,945 none
Lipper Convertibles Series II, L.P. ... 2,000,000 none 92,754 92,754 none
Lipper Offshore Convertibles, L.P. .... 2,000,000 none 92,754 92,754 none
Lipper Offshore Convertibles, L.P. #2.. 1,000,000 none 46,377 46,377 none
Merced Partners Limited Partnership.... 5,000,000 none 231,885 231,885 none
Merrill Lynch Insurance Group.......... 334,000 none 15,490 15,490 none
Morgan Stanley & Co. Incorporated (13). 5,251,000 none 7,790,910 243,525 7,547,385
Nomura Securities International, Inc. . 1,000,000 none 46,377 46,377 none
Peoples Benefit Life Insurance
Company.............................. 4,000,000 none 185,508 185,508 none
Peoples Benefit Life Insurance Company
TEAMSTERS............................ 6,000,000 none 278,261 278,261 none
Quattro Fund, LLC...................... 3,500,000 none 162,319 162,319 none
Retail Clerks Pension Trust............ 2,500,000 none 115,943 115,943 none
Retail Clerks Pension Trust #2......... 1,500,000 none 69,566 69,566 none
St. Albans Partners Ltd................ 4,000,000 none 185,508 185,508 none
South Dakota Retirement System......... 3,000,000 none 139,131 139,131 none
TIAA-CREF Mutual Funds
F/B/O its High Yield Bond Fund (14).. 250,000 none 11,595 11,595 none
TQA Master Plus Fund, LTD.............. 500,000 none 23,189 23,189 none
TQA Master Fund, LTD................... 2,000,000 none 92,754 92,754 none
Teachers Insurance and Annuity
Association.......................... 6,000,000 none 278,261 278,261 none
UBS O'Connor LLC F/B/O UBS Global
Equity Arbitrage Master Ltd.......... 2,000,000 none 92,754 92,754 none
Volkswagen of America Inc.--
Salaried Eaton Vance Mgt. (15)....... 100,000 none 4,638 4,638 none

Any other holder of notes or future
transferee, pledgee, donee or
successor of any holder (16)......... 57,801,000 none 2,680,627 2,680,627 none
----------

(1) Assumes that the full amount of the notes held by the selling holder is
being offered for registration hereunder.

(2) Because the selling holders may, pursuant to the prospectus, offer all or
some portion of the notes and shares they presently hold or, with respect
to shares, have the right to acquire upon conversion of such notes, we

cannot predict the amount or percentage of the notes and shares that will
be held by the selling holder upon termination of any such sales. In
addition, the selling holders identified above may have sold, transferred
or otherwise disposed of all or a portion of their notes and shares since
the date on which they provided the information regarding their notes and
shares in transactions exempt from the registration requirements of the
Securities Act. See "Plan of Distribution." The selling holders may sell
all, part or none of the notes or shares listed in the table. The amounts
listed in the table assume that each selling holder sells all of its
convertible notes and/or shares of common stock underlying such notes.

(3) Assumes that the full amount of the notes held by the selling holder is
converted into shares of common stock at the conversion price and offered
hereunder by such selling holder.

(4) The conversion price and the number of shares issuable upon conversion of
the notes are subject to adjustment under certain circumstances. See
"Description of Notes--Conversion of Notes." Section 15.3 of the indenture
governing the convertible notes provides that if any fractional shares of
common stock are issuable upon conversion of the notes, Holdings may either
pay cash in lieu of such fractional shares or round up the number of shares
issuable upon conversion. The number of shares reported in the table
assumes that Holdings rounds up the number of shares issued upon
conversion. We expressly reserve the right to pay cash in lieu of
fractional shares, and any decision as to whether pay cash or round up for
fractional shares will be made at the time the notes are surrendered for
conversion.

(5) CIBC World Markets International Arbitrage is an affiliate of Canadian
Imperial Bank of Commerce. Of the 10,551,885 shares reported as
beneficially owned by CIBC World Markets International Arbitrage,
10,000,000 are held by other affiliates of Canadian Imperial Bank of
Commerce. An affiliate of Canadian Imperial Bank of Commerce, CIBC World
Markets, was an initial purchaser or placement agent for our 12% senior
discount notes due 2008, our 11 1/4% senior discount notes due 2009, our 12
7/8% senior discount notes due 2010, our 10 3/4% senior notes due 2010 and
our 12 1/2% senior notes due 2010. CIBC World Markets was also a co-manager
of our public common stock offerings in February 2000 and July 2000. In
addition, CIBC World Markets is an agent and a lender under our credit
facility. CIBC World Markets and its affiliates received customary fees for
these services. The Trimaran group purchased 4,000,000 shares of our common
stock in a private placement at a purchase price of $18.75 per share and
received warrants to purchase 1,500,000 shares of common stock at exercise
prices ranging from $21.56 per share to $28.00 per share. Certain investors
in the Trimaran group are affiliates of CIBC World Markets. Andrew R. Heyer
is a Managing Director of CIBC World Markets and a managing member of
Trimaran Fund Management, L.L.C., the investment advisor to Trimaran Fund
II L.L.C. Mr. Heyer was a member of Holdings' board of directors from April
1999 until November 2000. Our stockholders' agreement, as amended, provides
that so long as the Trimaran group and Canadian Imperial Bank of Commerce
and their respective affiliates own collectively 5% or more of Holdings'
outstanding stock, Canadian Imperial Bank of Commerce affiliates and
Caravelle Investment Fund, L.L.C. collectively will have the right to
designate a representative to attend meetings of Holdings' board of
directors as an observer.

(6) Deephaven Domestic Convertible Trading Ltd. owned $2,000,000 aggregate
principal amount of Holdings' 12 1/2% senior discount notes due 2010.

(7) Deutsche Banc Alex.Brown was a co-lead underwriter of our public common
stock offering in July 2000 and a co-manager of our public common stock
offering in February 2000. Deutsche Banc was also a placement agent for our
12 7/8% senior discount notes due 2010 and our 10 3/4% senior notes due
2010.

(8) DIA High Yield Bond Fund owned $2,750,000 aggregate principal amount of
Holdings' 11 1/4% senior discount notes due 2009.

(9) Eaton Vance High Income Portfolio owned $5,360,000 aggregate principal
amount of Holdings' 12% senior discount notes due 2008, $25,500,000
aggregate principal amount of Holdings' 11 1/4% senior discount notes due
2009 and $3,870,000 aggregate principal amount of Holdings' 12 7/8% senior
discount notes due 2010.

(10) Eaton Vance Income Fund of Boston owned $1,150,000 aggregate principal
amount of Holdings' 12% senior discount notes due 2008, $12,235,000
aggregate principal amount of Holdings' 11 1/4% senior discount notes due
2009 and $4,080,000 aggregate principal amount of Holdings' 12 7/8% senior
discount notes due 2010.

(11) Hallmark Master Trust High Yield owned $1,550,000 of Holdings' 11 1/4%
senior discount notes due 2009.

(12) Lehman Brothers Inc. was an initial purchaser of our 12% senior discount
notes due 2008 and a co-manager of our public common stock offerings in
February 2000 and July 2000.

(13) Morgan Stanley & Co. Incorporated was the placement agent for the
convertible notes. Morgan Stanley & Co. Incorporated was also an initial
purchaser or placement agent for our 11 1/4% senior discount notes due
2009, our 12 7/8% senior discount notes due 2010 and our 10 3/4% senior
notes due 2010 and was co-lead underwriter of our public common stock
offerings in February 2000 and July 2000.

(14) TIAA-CREF Mutual Funds F/B/O its High Yield Bond Fund owned $250,000
aggregate principal amount of Holdings' 12 1/2% senior discount notes due
2010.

(15) Volkswagen of America Inc.--Salaried Eaton Vance Mgt. owned $15,000 of
Holdings' 11 1/4% senior discount notes due 2009.

(16) We may from time to time include additional selling holders and information
about such selling holders' plans of distribution in future supplements to
the prospectus, if required. The amounts provided assume that any holders
of the notes, or any future transferees, pledgees, donees or successors of
or from any such other holders of notes, do not beneficially own any common
stock other than the common stock issuable upon conversion of the notes at
the conversion rate.