Investor FAQs

.What is ISC's ticker symbol?
 ISC is traded on the Nasdaq Global Select Market under the symbol ISCA (Class A Common Stock) and on the NASDAQ Bulletin Board under the symbol ISCB (Class B Common Stock).

.What is the difference between Class A Common Stock and Class B Common Stock?
 Class A Common Stock has 1/5 vote per share and trades on the Nasdaq Global Select Market. Class B Common Stock has one vote per share and trades on the NASDAQ Bulletin Board. Class B Common Stock can convert into Class A Common Stock at no charge.

.Why would someone want to buy Class A Common Stock which has less voting rights?
 Class A Common Stock trades on the Nasdaq Global Select Market. The daily trading volume has historically been higher, and there has been more liquidity of the stock.

.How can I purchase the stock?
 The corporation is not currently selling either class of stock directly to the public. Just like any other stock, you may purchase from a person who wants to sell directly or through a stock broker.

.Which broker should I go to?
 The selection of a broker is a personal decision.

.When is the next earnings release?
 Our next earnings release will be published on the Investor Relations section of our Home Page.

.When and where is the next Annual Meeting of the Shareholders?
 The next annual meeting will be held in April.

.What happened to the old ISC stock traded under the symbol ISWY?
 Effective November 4, 1996, as a result of a recapitalization the common stock was converted automatically on a 15-for-1 basis into Class B Common Stock. The Class B Common Stock continues to trade over the counter on the NASDAQ Bulletin Board, and the symbol ISWY was changed to ISCB.

.What was the date of the conversion of the old stock into Class B Common Stock?
 November 4, 1996

.When did the Class A Common Stock begin to trade?
 November 5, 1996

.How do I get my old stock (ISWY) transferred?
 All of the old shares were automatically converted into Class B Common Stock. Transmittal Forms were issued to shareholders to complete and return to the transfer agent in order to receive a new certificate. If you have not completed a transmittal form, call the transfer agent.

.Who is the transfer agent?
250 Royall Street
Canton, MA 02021

.Who do I contact regarding a change of address?

The transfer agent.

ComputerShare 250 Royall Street Canton, MA 02021 800-568-3476

.Does the corporation pay dividends?

The corporation does not have a formal dividend policy. Historically the Board of Directors considers dividend issues at its Annual Meeting in April. ISC declared an annual dividend of $0.20 per share, payable on June 29, 2012, to common stockholders of record on May 31, 2012, marking the 39th consecutive year that the Company has paid a dividend to its shareholders.

.Does the corporation have a Dividend Reinvestment Program?
 No, not at this time.

.Do you have another question that hasn't been answered?
 Please fill out an information request.