Top insider buys: Oct 23 – Oct 29, 2023

The largest open-market purchases company insiders reported on SEC Form 4 between Oct 23 – Oct 29, 2023.

Week 43, 2023

#	Company	Who bought	Shares	Value	Source
1	NTRS NORTHERN TRUST CORP	3 officers/directors Cluster buy Michael O'Grady, Susan Cohen Levy, Jason J. Tyler	26,750	$1.7M	SEC filings
2	TRML Tourmaline Bio, Inc.	2 officers/directors Cluster buy Caley Castelein, Sandeep Chidambar Kulkarni	29,650	$391K	SEC filings
3	OXY OCCIDENTAL PETROLEUM CORP /DE/	10% Owner BERKSHIRE HATHAWAY INC	3,921,835	$246.4M	SEC filings
4	HHH Howard Hughes Holdings Inc.	Director Pershing Square Capital Management, L.P.	248,390	$16.6M	SEC filings
5	BLFS BIOLIFE SOLUTIONS INC	10% Owner Casdin Partners Master Fund, L.P.	927,165	$10.4M	SEC filings
6	ALGS Aligos Therapeutics, Inc.	Director Carole Nuechterlein	7,933,601	$6.0M	SEC filings
7	BMEZ BlackRock Health Sciences Term Trust	10% Owner Saba Capital Management, L.P.	377,399	$5.1M	SEC filings
8	BIGZ BlackRock Innovation & Growth Term Trust	10% Owner Saba Capital Management, L.P.	737,680	$4.9M	SEC filings
9	ECAT BlackRock ESG Capital Allocation Term Trust	10% Owner Saba Capital Management, L.P.	230,281	$3.3M	SEC filings
10	ASAN Asana, Inc.	President, CEO, & Chair Dustin A. Moskovitz	123,547	$2.2M	SEC filings

Source: SEC Form 4 filings, aggregated per company over the week. Open-market purchases of $100K or more only; grants, awards, option exercises and likely IPO or offering allocations are excluded. Cluster buys (two or more officers or directors buying) rank first, then by dollar value.

Not investment advice. This page reports public SEC data and is not a recommendation to buy or sell any security.