The phrase "announcing that it was" is correct and usable in written English.
It can be used when you want to convey that someone is making a declaration or statement about a particular situation or event.
Example: "The company is announcing that it was the recipient of the prestigious award for innovation this year."
Alternatives: "declaring that it was" or "stating that it was".
On Friday the auction house sent an e-mail to its clients announcing that it was increasing its so-called buyer's premium — the fee it charges buyers — for the first time since 2008.
Hyundai cited "the recent and disturbing allegations" in announcing that it was removing its ads from Mr. O'Reilly's show.
On October 31st, the Bank of Japan surprised the markets by announcing that it was expanding its quantitative-easing program.
In 2009, Porsche's supervisory board dismissed Mr. Wiedeking and Mr. Härter, months after announcing that it was abandoning its takeover plan.
Carbide fought off a takeover attempt by GAF earlier this year by announcing that it was selling its consumer products business.
In June, even I.B.M. became a casualty of the brutal technology wars, announcing that it was selling its disk-drive manufacturing business to Hitachi.
On Wednesday, TestFlight announced it would be terminating Android support as of March 21, for example, while also announcing that it was discontinuing its TestFlight SDK.
The news, announced on the CurrentC website this week, follows earlier signs of troubles for the retailer-backed app which laid off 30 employees earlier this year, while also announcing that it was postponing its plans for a nationwide launch.
"The ruling potentially removes obstacles to new capital investment, which will support small business, minority, and female broadcast ownership, and spur innovation," the FCC said in announcing that it was clarifying its foreign ownership policy.
The government issued a statement after its meeting announcing that it was turning over security of the province directly to the army.
Late on Monday, NatWest appeared to backtrack on its decision, announcing that it was reviewing the situation.
