It looks like GE needs 2,056 shares to top the 30% threshold reporting requirement. If they are buying shares on the open market, we should see the 30% notification soon.
(6,161,920 shares on 10/27 notification + 2,056 shares) / (20,546,585 total number of Arcam shares) = 30.00000243%
It looks like the shares bought on Thursday, the 27th, were included in the notification posted on that date.
From the Oct.27 press release: AMF Fonder, Sand Grove Opportunities Master Fund and Water Island Capital, representing an aggregate of approximately 5.70 per cent of the total number of outstanding shares and votes in Arcam, on a fully diluted basis,6 have entered into irrevocable undertakings with GE to accept the increased Offer and Första AP-fonden and Handelsbanken Fonder, representing an aggregate of approximately 13.87 per cent of the total number of outstanding shares and votes in Arcam, on a fully diluted basis, who have previously accepted the Offer, have entered into irrevocable undertakings with GE not to withdraw their acceptances of the Offer.
Based on the numbers provided by GE:
29.70% + 5.70% + 13.87% = 49.27% fully committed shares. This figure does not included the shares that will be tendered but can be withdrawn before the November 10th deadline.
Individual brokers require some additional time for filing documentation. Many broker deadlines are earlier.
All of my shares are at Fidelity. Fidelity's deadline is Tuesday, November 8th.