Draft signings?

As of July 31st, the A's have only signed 6 of the 20 draft picks this year. They had until August 1st to sign any/all of their draft picks. I notice on the website that news of other teams signing is still trickling in ( Do you suppose the A's have signed more than 6 of the picks and are just slow in releasing news, perhaps due to the trade deadline?

Long time A's fan in Humboldt County. I was born in Oakland and watched hundreds of games at the Coliseum.