The husband and wife were killed in the shelling of the southern city of Mykolaiv.
Oleksiy Vadatursky and his wife Raisa were killed when a missile hit their house.
Nibulon was a company owned by Mr. Vadatursky. The "Hero of Ukraine" award was given to him.
Oleksandr Senkevych is the mayor of Mykolaiv.
A hotel, a sports complex, two schools and a service station were damaged.
Mykolaiv is located on the main route to Odesa, the biggest port on the Black Sea.
Vitaliy Kim said Mr Vadatursky's contribution to the development of the agricultural and shipbuilding industry is priceless.
An adviser to Ukrainian President Volodymyr Zelensky said that he believed Russia had targeted the businessman.
According to Mykhailo Podolyak, one of the missiles hit the businessman's bedroom, leaving no doubt that it was being guided.
Nibulon has a lot of facilities for storing and exporting grain.
The disruption of wheat and other grains exports due to the war has caused food prices to go up around the world.
The UN brokered an agreement between Turkey and the US to ease the food crisis. There was an attack on the Odesa port the day before.
Ukrainian exports have been delayed by more than one day. The first ship carrying grain was expected to leave Odesa on Monday, according to Turkey.
Russia is accused of stealing grain from farms on occupied land and exporting it via the southern peninsula of Ukranian.
Russia denied the claims.
Russian Navy Day celebrations have been canceled in the occupied peninsula.
The Black Sea Fleet headquarters was alleged to have been hit by a Ukrainian drones. In the past, the fleet has been based in Sevastopol.
The senator said the perpetrators of the drone launch would be found by the evening.
Russian claims were dismissed as a provocation by a senior Ukrainian official.
He said that the liberation of the peninsula would be more efficient.
The Governor posted a picture of him in a courtyard with no obvious structural damage. The Navy Day celebrations were canceled due to security reasons.
Navy Day is a holiday in Russia and is celebrated across the country. The president of Russia is in his home city.
He signed a new naval doctrine that named the US as Moscow's main rival and set out the Kremlin's global maritime ambitions.
The flagship of the Black Sea Fleet, Moskva, sank in April after being hit by two missiles.
Russia said the missile cruiser sank in a storm because of a fire caused by exploding ammunition, but didn't mention a Ukrainian attack.
The exact number of Russian sailors killed or injured in the ship's demise is not known.
The mayor of Kharkiv said that the city was hit by Russian missiles again. The main building of the school was destroyed.
The latest reports couldn't be verified by thebbc.
In a late-night address on Saturday, Volodymyr Zelensky, the President of Ukraine, told all civilians still living in the eastern part of the country to leave.
The area has seen a lot of fighting between Russian forces and the locals.
The Russian army will have less time to kill if more people leave the area. All available opportunities will be used to save lives.