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Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (6 ops.)
Latest filing published 17 Mar 2026 for Costar Group, INC., €109k. Read the official filing
Filing timeline
BuySaleMichael J. Desmarais
Insider track record
Disclosed buys
0
Disclosed sells
6
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Michael J. Desmarais: trading record in brief
Michael J. Desmarais, listed as senior executive, appears in our data through filings on Costar Group, Inc. shares, published by SEC (Form 4). Over a trading history stretching from 2 May 2022 to 15 March 2026, the count stands at 20 filings.
No open-market purchase appears, only 6 sales worth €1.4M. The rest of the record consists of 14 share grants.
The latest filing, published on 17 March 2026, reports a share grant of €109k in Costar Group, Inc. The median gap between a trade and its publication by SEC (Form 4) is 2 days. Section 16 rules allow two business days to file each Form 4. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.
Companies and markets linked to Michael J. Desmarais
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations20 total
2,873 shares@ US$43.633.4% of flowCommon Stock, par value $0.01 per shareSEC:0001925959-26-000006:0
17,676 sharesCommon Stock, par value $0.01 per shareSEC:0001925959-26-000004:0
6,353 shares@ US$44.637.0% of flowCommon Stock, par value $0.01 per shareSEC:0001925959-26-000002:0
3,641 shares@ US$78.738.6% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-25-000057:0
9,026 sharesCommon Stock, par value $0.01 per shareSEC:0001057352-25-000045:0
18,828 shares0Common Stock, par value $0.01 per shareSEC:0001057352-25-000039:0
5,500 shares@ US$79.8813.6% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-24-000132:0
3,800 shares@ US$92.6710.6% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-24-000063:0
2,267 shares@ US$87.875.9% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-24-000053:0
6,924 sharesCommon Stock, par value $0.01 per shareSEC:0001057352-24-000036:0
16,976 shares0Common Stock, par value $0.01 per shareSEC:0001057352-24-000024:0
1,663 shares@ US$76.893.9% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-23-000123:0
3,292 sharesCommon Stock, par value $0.01 per shareSEC:0001057352-23-000058:0
5,600 shares@ US$70.3612.1% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-23-000048:0
593 shares@ US$70.661.3% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-23-000038:0
14,139 shares@ US$70.7330.6% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-23-000032:0
1,296 shares@ US$82.813.5% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-22-000123:0
1,423 shares@ US$69.653.3% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-22-000110:0
2,000 shares@ US$72.514.6% of flowCommon Stock, par value $0.01 per shareSEC:0001925959-22-000002:0
1,000 shares@ US$63.141.7% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-22-000066:0
20 of 20 declarations
