Common Stock

NMR Centers Inc., a Newport Beach company that specializes in nuclear magnetic resonance technology for medical applications, plans a public offering of 1 million shares of common stock and 500,000 warrants. Gwendolyn Bandt, a spokeswoman for First Affiliated Securities of San Diego, which is underwriting the offering, said Wednesday that the stock will be sold in units of two shares and one warrant for an asking price of $7 per unit.

Citadel Holding Corp., the Glendale parent of Fidelity Federal Bank, said it has filed with the Securities and Exchange Commission to go ahead with its previously announced common stock rights offering aimed at raising $30 million. The offering, which is intended to shore up Citadel's capital, will enable stockholders of record to receive one right for each share of common stock they own. Citadel said each current shareholder will have the option to buy additional shares.

Helionetics Inc. said the American Stock Exchange has delisted the company's common stock after a two-month suspension of trading. "Our present financial condition does not meet their requirements," said a Helionetics spokeswoman. The Irvine-based company has been operating under Chapter 11 of the Federal Bankruptcy Code since July 31. Chapter 11 protects a company from its creditors while it works out a plan to pay its bills.

Unitrin Inc. said Friday its board has authorized the insurance company to repurchase up to 19.3% of its outstanding common stock, in a defense against American General Corp.'s unfriendly $2.6-billion takeover bid. The Chicago-based company said it may repurchase up to 10 million of its 51.8 million common shares outstanding, using general corporate funds or bank loans.

In the latest of a complicated series of maneuvers, GTI Corp.'s board of directors said Friday that it had signed a definitive agreement for the private placement of 2.1 million shares--or 38%--of GTI's common stock. The private placements will be "of major importance to GTI's decision to concentrate on internal growth and acquisitions," according to GTI Chairman James LaFleur. GTI is a San Diego-based electronics and automotive manufacturer.

The board of directors for Biopool International in Ventura has approved a repurchase plan for up to 400,000 shares of its common stock. The action, taken at the annual board of directors meeting, is in response to the continued weakness in the company's stock price. The timing and amount of actual purchases of the company's stock will be determined by management over the next 12 months, officials said.

Newbury Park-based Semtech Corp. has been authorized by its directors to buy back its common stock as a possible way to bolster the price of the shares. Semtech, which produces electronic components for military and commercial customers, has seen its stock price fall dramatically in recent years. The shares traded in the $1.80 range last week on the American Stock Exchange, down from a five-year high of $5.50 in June, 1988.

Gateway Communications Inc. said it plans to make a public offering of 800,000 shares of common stock--including 400,000 shares being sold by the chairman of a competitor of the Irvine-based communications equipment maker. Bateman Eichler, Hill Richards Inc. and Needham & Co. Inc. are the underwriters of the offering, expected to be made in September. According to the prospectus, Raymond Noorda, chairman of Novell Inc. of Orem, Utah, is selling 40.7% of his 980,577 shares.

Donald Trump, the New York developer who controls Resorts International Inc., said Monday that he has proposed to buy all of the casino operator's remaining common shares at $15 each. On Nov. 2, Trump, who is chairman of Resorts, began an offer to buy 167,00 outstanding shares of Class B common stock of Resorts for $135 per share, or a total of $22.5 million. The offer expires Jan. 4. The Class B shares carry 100 times the voting power of Class A shares.

Chatsworth-based Syncor International Corp., which operates a network of 112 nuclear pharmacy service centers, said it has purchased 100,000 shares of its common stock at an average price of $9.08 per share. The company's board of directors had previously approved the repurchase of up to 500,000 shares on the open market. Syncor dispenses radiopharmaceutical prescriptions and distributes bulk radiopharmaceutical products for use in diagnostic imaging.