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Who

Brian J. Radecki

Director

Company insider

Files Form 4 as: Director, ACV Auctions; Director, Spectral AI; Director, Wheels Up Experience; Chief Financial Officer, CoStar Group.

In numbers

Trades disclosed
126
Buys
1
Sells
14
Bought
$0
Sold
$17.6M
Companies
4
Companies where not an officer
3
First trade
5 Jun 2007
Last trade
16 Oct 2026
Last filed
19 Oct 2026

Companies traded

Where they are an officer
CSGP CoStar GroupOfficer · Business Services · last 13 Mar 20150 buys · 14 sells
Everywhere else they filed: board seats, 10% stakes, other companies
ACV AuctionsDirector · Business Services · last 16 Oct 20260 buys · 0 sells
MDAI Spectral AIDirector · Medical Devices · last 11 Sep 20230 buys · 0 sells
UP Wheels Up ExperienceDirector · Airlines & Air Freight · last 2 Jun 20221 buy · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
101Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
16 Oct 2026filed 19 Oct 2026ACV AuctionsBusiness ServicesSEC FORM 4 Code U—107,708filing
27 May 2026filed 29 May 2026ACV AuctionsBusiness ServicesSEC FORM 4 Code A—27,500 at $0.00filing
27 May 2026filed 29 May 2026ACV AuctionsBusiness ServicesSEC FORM 4 Code A—27,500 at $0.00filing
28 May 2025filed 30 May 2025ACV AuctionsBusiness ServicesSEC FORM 4 Code A—9,868 at $0.00filing
31 Dec 2024filed 14 Feb 2025ACV Auctionsoption or derivative · Business ServicesSEC FORM 4 Code C—40,000 at $0.00filing
31 Dec 2024filed 14 Feb 2025ACV Auctionsoption or derivative · Business ServicesSEC FORM 4 Code C—21,101 at $0.00filing
31 Dec 2024filed 14 Feb 2025ACV AuctionsBusiness ServicesSEC FORM 4 Code C—61,101filing
29 May 2024filed 31 May 2024ACV AuctionsBusiness ServicesSEC FORM 4 Code A—9,239 at $0.00filing
11 Sep 2023filed 13 Sep 2023MDAI Spectral AIoption or derivative · Medical DevicesSEC FORM 4 Code M—25,000 at $0.00filing
11 Sep 2023filed 13 Sep 2023MDAI Spectral AIMedical DevicesSEC FORM 4 Code M—25,000 at $0.00filing
2 Jun 2022filed 3 Jun 2022UP Wheels Up ExperienceAirlines & Air FreightSEC FORM 4 Code A—62,950 at $0.00filing
17 Sep 2021filed 21 Sep 2021UP Wheels Up ExperienceAirlines & Air FreightSEC FORM 4 Code A—17,500 at $0.00filing
13 Jul 2021filed 15 Jul 2021UP Wheels Up ExperienceAirlines & Air FreightSEC FORM 4 Code A—36,890filing
13 Jul 2021filed 15 Jul 2021UP Wheels Up ExperienceAirlines & Air FreightSEC FORM 4 Bought—50,000filing
13 Jul 2021filed 15 Jul 2021UP Wheels Up Experienceoption or derivative · Airlines & Air FreightSEC FORM 4 Code A—23,019filing
13 Jul 2021filed 15 Jul 2021UP Wheels Up Experienceoption or derivative · Airlines & Air FreightSEC FORM 4 Code A—57,549filing
13 Jul 2021filed 15 Jul 2021UP Wheels Up Experienceoption or derivative · Airlines & Air FreightSEC FORM 4 Code A—69,058filing
13 Jul 2021filed 15 Jul 2021UP Wheels Up Experienceoption or derivative · Airlines & Air FreightSEC FORM 4 Code A—57,549filing
26 Mar 2021filed 30 Mar 2021ACV Auctionsoption or derivative · Business ServicesSEC FORM 4 Code C—21,101 at $0.00filing
26 Mar 2021filed 30 Mar 2021ACV Auctionsoption or derivative · Business ServicesSEC FORM 4 Code J—21,101 at $0.00filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Industrials15

Buys in green, sells in red, by the company’s sector.

Related people

Robin Jack RossmannChief Financial Officer · Chief Financial Officer at Costar Group, filing Form 4 there in the last year
Cynthia Cammett CannChief Accounting Officer · Chief Accounting Officer at Costar Group, filing Form 4 there in the last year
John W. HillDirector · Director at Costar Group, filing Form 4 there in the last year
Andrew C. FloranceFounder and CEO · Founder and CEO at Costar Group, filing Form 4 there in the last year
Frederick G. SaintPresident, Marketplaces · President, Marketplaces at Costar Group, filing Form 4 there in the last year
Meaghan Danielle WellsChief Growth Officer · Also traded UP in the last 90 days
CK Wheels LLC10% owner · Also traded UP in the last 90 days
Gilbert Ray Cisneros, Jr.Representative, CA-31 · Also traded CSGP in the last 90 days