First Manhattan Co

SEC CIK: 0000728083
Latest filing: Aug 14, 2026

SEC filings (opens in a new tab)

ADTN holding history

ADTRAN Holdings, Inc. in every 13F filed by First Manhattan Co, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

ADTN overview All 13F holders of ADTN Full Q2 2026 holdings

Shares (Q4 2021): 0; Sold out in Q4 2021
Value: $0
% of portfolio: 0.0%
Quarters held: 1; Since Q3 2021

Holdings of ADTN by First Manhattan Co, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q4 2021	0	$0	0.0%	−210−100.0%	Sold out	Holders
Q3 2021	210	$3.00K	<0.1%	+210	New	Holders