The documents could be considered misleading because they failed to disclose Salomon's illegal bidding in the Treasury market.
The additional violations, which the firm is expected to announce today, include another instance of illegal bidding involving S. G. Warburg.
You fooled the queen to her own face, and talked a Palace Guard into doing your illegal bidding.
The test is a response to the Salomon Brothers scandal a year ago in which the firm admitted to illegal bidding.
Salomon's top executives, who had known about the illegal bidding but took no action, were forced to resign.
The firm also faces dozens of lawsuits stemming from its illegal bidding in the Treasuries markets.
Salomon said in the report that the first illegal bidding it had uncovered occurred at the Dec. 27, 1990, auction of four-year notes.
The bid that led to the unraveling of the illegal bidding was also made in February.
But the firm contended that only $3.3 million to $4.6 million in profits resulted from illegal bidding in eight auctions.
Salomon estimated that 18.8 percent of the profit in that auction was attributable to its illegal bidding.