<PAGE>
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
------------------------------
FORM 8-K/A
CURRENT REPORT
------------------------------
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported) June 18, 1997
-------------------------------
HELISYS, INC.
- --------------------------------------------------------------------------------
(Exact Name of Registrant as Specified in Charter)
Delaware 0-27286 95-4552813
- --------------------------------------------------------------------------------
(State or Other Jurisdiction (Commission (I.R.S. Employer
of Incorporation) File Number) Identification No.)
24015 Garnier Street, Torrance, California 90505
- -------------------------------------------------------------------------------
(Address of Principal Executive Offices) (Zip Code)
Registrant's telephone number, including area code (310) 891-0600
----------------------------
Not Applicable
- -------------------------------------------------------------------------------
(Former Name or Former Address, if Changed Since Last Report)
<PAGE>
Item 4. Changes in Registrant's Certifying Accountant.
On June 18, 1997, the Board of Directors of Helisys, Inc., a Delaware
corporation (the "Company") dismissed Arthur Andersen LLP as the Company's
auditors.
The Company believes that there were no disagreements with Arthur Andersen
LLP on any matter of accounting principles or practices, financial statement
disclosure, auditing scope or procedure or any reportable event. Arthur Andersen
LLP's reports on the financial statements for the fiscal years ending July 31,
1995 and July 31, 1996, respectively, contained no adverse opinions or
disclaimer of opinion, nor were they qualified or modified as to uncertainty,
audit scope or accounting principles.
Item 7. Financial Statements and Exhibits
(a) Not applicable.
(b) Not applicable.
(c) Exhibits. The following exhibits are filed as part of this report:
Exhibit Number Description
16.1 Letter from Arthur Andersen LLP on changes in
certifying accountant
<PAGE>
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.
HELISYS, INC.
Date: July 2, 1997 By: /s/ DAVE T. OKAZAKI
---------------------------
Dave T. Okazaki
Chief Financial Officer
<PAGE>
EXHIBIT INDEX
<TABLE>
<CAPTION>
Sequentially
Exhibit Number Description Numbered Page
- -------------- ----------- -------------
<C> <S> <C>
16.1 Letter from Arthur Andersen LLP on changes in certifying
accountant 6
</TABLE>
<PAGE>
EXHIBIT 16.1
[LETTERHEAD OF ARTHUR ANDERSEN]
July 1, 1997
Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549
Gentlemen:
We have read the letter sent to us by Helisys, Inc. (the Company) dated
June 19, 1997 informing us that we were disengaged as the Company's independent
public accountant. We have also read Item 4 included in the Form 8-K dated
June 24, 1997 filed with the Securities and Exchange Commission. We agree with
the statements concerning our firm in such Form 8-K except that we believe there
have been disagreements on accounting matters with respect to revenue
recognition which should be disclosed under Regulation S-B item 304.
During the years ended July 31, 1995 and 1996, the Company had recorded revenue
on transactions based on date shipped without consideration to other factors
specific to certain of those transactions. We had numerous discussions with
management and the Audit Committee regarding revenue recognition, under
generally accepted accounting principles, as it relates to transactions which
include acceptance criteria, deposits, payments tied to sale to end user and
other miscellaneous terms. While the Company indicated that they did not agree
with our position, they ultimately did report revenues for each of the years to
our satisfaction.
We also would like to remind you that any decision to give this letter to
others, including the SEC, is the responsibility of Helisys, Inc.
Very truly yours,
/s/ ARTHUR ANDERSEN LLP
ARTHUR ANDERSEN LLP
