Maynard raised an arm in an attempt to fend off a Ginnivan tackle during the Magpies' heavy 66-point defeat to the Hawks on Saturday.
He caught Ginnivan high and can accept a $2500 penalty for an incident that was assessed as careless conduct, low impact and high contact.
The contest sparked a reaction from Hawks forward Nick Watson, who crashed into Maynard and has been charged with rough conduct.
Like Maynard, Watson can accept a $2500 fine after his bump was assessed as careless conduct, low impact and high contact.
St Kilda ruckman Rowan Marshall was hit with a $1250 fine for striking West Coast's teen sensation Harley Reid during the Saints' 72-point win on Saturday.
Eagles forward Liam Ryan was cleared of wrongdoing over an incident involving Liam Stocker.
Ryan braced for contact with Stocker but it was the MRO's view that he did not elect to bump his opponent, and his actions were not unreasonable in the circumstances.
Days after overturning a rough conduct ban at the Appeal Board, GWS tagger Toby Bedford was fined $1250 for careless contact with an umpire.
Giants teammate Tom Green ($1250 - tripping) and Geelong defender Jake Kolodjashnij ($1250 - tripping) were also fined out of Saturday's matches.
Port Adelaide star Zak Butters received fines for rough conduct on Richmond's James Trezise ($5000) and careless umpire contact ($1875).
13°C