<PAGE>
- --------------------------------------------------------------------------------
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of earliest event reported):
December 16, 1997
CONCENTRIC NETWORK CORPORATION
----------------------
(Exact name of registrant as specified in its charter)
Delaware 0-22575 65-0257497
- ---------------------------- ----------- ------------------
(State or other jurisdiction (Commission (I.R.S. Employer
of incorporation) File Number Identification No.)
10590 N. Tantau Avenue
Cupertino, California 95014
(Address of Principal Executive Offices)
(Zip Code)
Registrant's telephone number, including area code: (408) 342-2800
Not Applicable
------------------------------------------------------------
(Former name or former address, if changed since last report)
- --------------------------------------------------------------------------------
<PAGE>
This report is filed on behalf of Concentric Network Corporation.
ITEM 5. OTHER EVENTS.
On December 16, 1997, Concentric Network Corporation announced that it
has entered into an agreement to sell $150 million Units, each Unit consisting
of $1,000 in principal amount of its 12-3/4% Senior Notes due 2007 and a
Warrant to purchase 6.34072 shares of its Common Stock in a private placement
within the United States to qualified investors and to certain non-United States
investors.
The securities to be offered will not be registered under the
Securities Act of 1933, as amended (the "Securities Act"), or applicable state
securities laws, and may not be offered or sold in the United States absent
registration under the Securities Act and applicable state securities laws or
available exemptions from registration requirements.
ITEM 7. EXHIBITS.
(c) Exhibits:
Exhibit
Number
------
99.1 December 16, 1997 Press Release: Concentric
Network Corporation Prices $150 Million Private
Offering of Units, Consisting of 12-3/4% Senior
Notes Due 2007 and Warrants to Purchase Common
Stock
-2-
<PAGE>
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, as
amended, the registrant has duly caused this report to be signed on its behalf
by the undersigned hereunto duly authorized.
Dated: December 30, 1997
CONCENTRIC NETWORK CORPORATION
-----------------------------------------------
(Registrant)
By: /s/ Michael F. Anthofer
-------------------------------------------
Name: Michael F. Anthofer
Title: Senior Vice President, Finance and Chief
Financial Officer
-3-
<PAGE>
EXHIBIT INDEX
DESCRIPTION OF DOCUMENT
Exhibit
Number
- ------
99.1 December 16, 1997 Press Release: Concentric Network Corporation
Prices $150 Million Private Offering of Units, Consisting of 12-3/4%
Senior Notes Due 2007 and Warrants to Purchase Common Stock
<PAGE>
EXHIBIT NUMBER 99.1
-------------------
CONCENTRIC NETWORK CORPORATION PRICES $150 MILLION PRIVATE OFFERING OF UNITS,
CONSISTING OF 12-3/4% SENIOR NOTES DUE 2007 AND
WARRANTS TO PURCHASE COMMON STOCK
CUPERTINO, CA/December 16, 1997 -- Concentric Network Corporation announced
today that it has entered into an agreement to sell $150 million Units, each
Unit consisting of $1,000 in principal amount of its 12-3/4% Senior Notes due
2007 and a Warrant to purchase 6.34072 shares of its Common Stock in an offering
within the United States to qualified investors and to certain non-United States
investors.
The Company stated that it intends to use the proceeds of the offering to fund
potential acquisitions and for working capital purposes.
This announcement is neither an offer to sell nor a solicitation to buy any of
these securities.
The Units have not been registered under the Securities Act of 1933, as amended
(the "Securities Act"), or any state securities laws, and unless so registered,
may not be offered or sold in the United States except pursuant to an exemption
from, or in a transaction not subject to, the registration requirements of the
Securities Act and applicable state securities laws.
About Concentric Network Corporation
A leader in IP network innovation, Concentric Network Corporation provides Wide
Area Intranets and Extranets for the enterprise. These high performance, secure,
cost-effective and reliable IP-based Virtual Private Network services connect
enterprises with their remote sites, mobile users, business partners and
customers. For the consumer market, Concentric Network offers a complete line of
connectivity and hosting products. The Concentric network architecture is based
on "super" points of presence (SuperPOPs), an advanced ATM backbone, and
distributed data centers which enable high functionality, low/fixed latency,
high throughput and superior reliability to support a wide range of
applications. Concentric Network is headquartered in Cupertino, Calif. For more
information, access the company's Web site at http://www.concentric.net or
contact Katie Greene at 408-342-2885.
