GAMBILL MARK M

Director at SPEEDWAY MOTORSPORTS LLC · on record since Jan 5, 2006
Director at NEWMARKET CORP · on record since Jan 20, 2009
Director at Barings BDC, Inc. · on record since Aug 12, 2009

Insider trading activity of GAMBILL MARK M

Transactions on record: 142; since Jan 5, 2004

Open-market buys: 13; $338.3K

Open-market sells: 27; $3.3M

Companies traded: 3; last filing Jul 1, 2026

Figures computed from official regulatory filings — .

Companies where GAMBILL MARK M has traded

NEWMARKET CORP21 tx · $159.3K · Jul 1, 2026
SPEEDWAY MOTORSPORTS LLC111 tx · $7.7M · Sep 19, 2019
Barings BDC, Inc.10 tx · $150K · May 7, 2018

Track record of GAMBILL MARK M

Statistical track record

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Open-market buys: 13

Last buy: Jan 30, 2013

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Transaction history of GAMBILL MARK M

Co-insiders of GAMBILL MARK M

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
NEWMARKET CORPListing on record	Jul 1, 2026	Award	157	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2025	Award	144	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 2, 2024	Award	193	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 5, 2023	Award	223	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2022	Award	299	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2021	Award	279	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2020	Award	224	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Sep 19, 2019	Other	-49,940	19.75 USD	$986.3K		SEC
NEWMARKET CORPListing on record	Jul 1, 2019	Award	224	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Apr 26, 2019	Award	5,286	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 2, 2018	Award	222	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Barings BDC, Inc.Listing on record	May 7, 2018	Award	4,351	11.49 USD	$50K		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Apr 25, 2018	Award	4,226	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Nov 13, 2017	Sell	-12,000	20.00 USD	$240K	Unusual size	SEC
NEWMARKET CORPListing on record	Jul 3, 2017	Award	130	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Barings BDC, Inc.Listing on record	Jun 19, 2017	Award	2,694	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Apr 21, 2017	Award	3,893	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2016	Award	144	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Barings BDC, Inc.Listing on record	May 27, 2016	Award	2,721	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Apr 20, 2016	Award	3,994	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2015	Award	112	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Barings BDC, Inc.Listing on record	May 8, 2015	Award	2,168	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Apr 17, 2015	Award	3,204	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2014	Award	127	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Barings BDC, Inc.Listing on record	May 12, 2014	Award	1,926	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
NEWMARKET CORPListing on record	Jul 1, 2026	Award	157	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2025	Award	144	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 2, 2024	Award	193	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 5, 2023	Award	223	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2022	Award	299	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2021	Award	279	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2020	Award	224	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Sep 19, 2019	Other	-49,940	19.75 USD	$986.3K		SEC
NEWMARKET CORPListing on record	Jul 1, 2019	Award	224	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Apr 26, 2019	Award	5,286	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 2, 2018	Award	222	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Barings BDC, Inc.Listing on record	May 7, 2018	Award	4,351	11.49 USD	$50K		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Apr 25, 2018	Award	4,226	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Nov 13, 2017	Sell	-12,000	20.00 USD	$240K	Unusual size	SEC
NEWMARKET CORPListing on record	Jul 3, 2017	Award	130	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Barings BDC, Inc.Listing on record	Jun 19, 2017	Award	2,694	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Apr 21, 2017	Award	3,893	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2016	Award	144	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Barings BDC, Inc.Listing on record	May 27, 2016	Award	2,721	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Apr 20, 2016	Award	3,994	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2015	Award	112	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Barings BDC, Inc.Listing on record	May 8, 2015	Award	2,168	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPEEDWAY MOTORSPORTS LLCListing unverified	Apr 17, 2015	Award	3,204	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
NEWMARKET CORPListing on record	Jul 1, 2014	Award	127	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Barings BDC, Inc.Listing on record	May 12, 2014	Award	1,926	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC