Curtis, 30, used the windfalls of A$1.433 million to fund a lavish lifestyle.
The proceeds were used to pay for a holiday with friends in Whistler and Las Vegas.
Curtis also bought Hartman a brand new Mini Cooper and motorbike to the tune of A$80,000 and transferred him A$50,000.
Hartman, who told brokers what to trade on behalf of Orion, would send Curtis messages directing him to buy or sell a particular number of Contracts for Difference (CFDs) on a particular company's stock at specific times.
On one occasion, Curtis traded more than 30,000 CFDs and earned A$11,000, from the information on Orion, which managed A$6 billion worth of stock at the time.
The trade was completed the day after he put A$80,000 into a new CMC Markets trading account and two days after he bought Hartman a A$99 BlackBerry.
The court heard Curtis had known Hartman since the 1990s and they both grew up in Mosman.
Hartman has served a jail sentence for insider trading offences and received a discount for assisting Curtis' prosecution.
Curtis faces the maximum sentence of five years in jail.
A sentencing hearing will be held on June 17.