FIRST MANHATTAN CO. LLC.

Position in MSB — Mesabi Trust

CIK 728083 NEW YORK, NY

Position in MSB

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$9,766,890

+$9,762,434 QoQ

Shares Held

310,060

+206606.7% QoQ

Ownership

2.36%

of shares outstanding

% of Portfolio

0.04%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2021

2 quarters on record

Voting authority Sole 0% Shared 100% None 0%

Basic Materials · as of Mar 31, 2026

FIRST MANHATTAN CO. LLC. holds $12,719,344 across 3 Steel names. MSB ranks #1 (76.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MSB	Mesabi Trust This page	310,060	$9,766,890
2	NUE	Nucor Corp	12,395	$2,095,994
3	NWPX	NWPX Infrastructure, Inc.	11,000	$856,460

2 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$9,766,890	310,060	+206606.7%	Shares	Sole	2026-05-15
2021-09-30	$4,456	150	—	Shares	Sole	2021-11-15
No filing history on record for this holder in this stock.