WALT DAVID R

Director at ILLUMINA, INC. · on record since Mar 30, 2006
Director at EXICURE, INC. · on record since Sep 28, 2017
Director at Dare Bioscience, Inc. · on record since Sep 25, 2015
Director at Quanterix Corp · on record since Dec 13, 2017

Insider trading activity of WALT DAVID R

Transactions on record: 4,806; since May 21, 2004

Open-market buys: 49; $11.5M

Open-market sells: 4,645; $111.6M

Companies traded: 4; last filing Jan 6, 2026

Figures computed from official regulatory filings — .

Companies where WALT DAVID R has traded

Quanterix Corp46 tx · $8M · Jan 6, 2026
EXICURE, INC.10 tx · $3.2M · Jun 8, 2020
Dare Bioscience, Inc.42 tx · $459.1K · Jan 5, 2017
ILLUMINA, INC.4708 tx · $112.1M · Apr 11, 2016

Track record of WALT DAVID R

Statistical track record

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Open-market buys: 49

Last buy: Jun 13, 2025

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Transaction history of WALT DAVID R

Co-insiders of WALT DAVID R

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Quanterix CorpListing on record	Jan 6, 2026	Award	1,215	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Oct 3, 2025	Award	2,594	5.54 USD	$14.4K	Unusual size	SEC
Quanterix CorpListing on record	Jul 2, 2025	Award	2,148	6.69 USD	$14.4K	Unusual size	SEC
Quanterix CorpListing on record	Jun 13, 2025	Buy	36,010	6.23 USD	$224.3K	conv 43Cluster	SEC
Quanterix CorpListing on record	Jun 13, 2025	Buy	123,990	6.14 USD	$761.3K	conv 47Cluster	SEC
Quanterix CorpListing on record	Jun 9, 2025	Buy	131,869	5.43 USD	$716K	conv 40	SEC
Quanterix CorpListing on record	Jun 9, 2025	Buy	78,131	5.34 USD	$417.2K	conv 44Cluster	SEC
Quanterix CorpListing on record	Apr 3, 2025	Award	2,156	6.67 USD	$14.4K		SEC
Quanterix CorpListing on record	Jan 6, 2025	AwardD (derivative)	15,821	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 6, 2025	Award	7,435	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Sep 17, 2024	Buy	47,000	13.29 USD	$624.6K	conv 47First in 12mo	SEC
Quanterix CorpListing on record	Sep 17, 2024	Gift	-1,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Sep 17, 2024	Gift	-1,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 4, 2024	AwardD (derivative)	6,412	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 4, 2024	Award	2,947	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 4, 2023	AwardD (derivative)	12,124	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 4, 2023	Award	8,083	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Aug 10, 2022	Buy	150,000	8.62 USD	$1.3M	conv 59ClusterFirst in 12mo	SEC
Quanterix CorpListing on record	Jan 5, 2022	Award	2,668	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 5, 2022	AwardD (derivative)	4,002	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 5, 2021	AwardD (derivative)	7,900	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 5, 2021	Award	2,270	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
EXICURE, INC.Listing on record	Jun 8, 2020	AwardD (derivative)	21,693	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Mar 17, 2020	Buy	54,064	16.66 USD	$900.7K	conv 34	SEC
EXICURE, INC.Listing on record	Mar 16, 2020	Buy	291,066	1.21 USD	$352.2K	conv 44Cluster	SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Quanterix CorpListing on record	Jan 6, 2026	Award	1,215	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Oct 3, 2025	Award	2,594	5.54 USD	$14.4K	Unusual size	SEC
Quanterix CorpListing on record	Jul 2, 2025	Award	2,148	6.69 USD	$14.4K	Unusual size	SEC
Quanterix CorpListing on record	Jun 13, 2025	Buy	36,010	6.23 USD	$224.3K	conv 43Cluster	SEC
Quanterix CorpListing on record	Jun 13, 2025	Buy	123,990	6.14 USD	$761.3K	conv 47Cluster	SEC
Quanterix CorpListing on record	Jun 9, 2025	Buy	131,869	5.43 USD	$716K	conv 40	SEC
Quanterix CorpListing on record	Jun 9, 2025	Buy	78,131	5.34 USD	$417.2K	conv 44Cluster	SEC
Quanterix CorpListing on record	Apr 3, 2025	Award	2,156	6.67 USD	$14.4K		SEC
Quanterix CorpListing on record	Jan 6, 2025	AwardD (derivative)	15,821	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 6, 2025	Award	7,435	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Sep 17, 2024	Buy	47,000	13.29 USD	$624.6K	conv 47First in 12mo	SEC
Quanterix CorpListing on record	Sep 17, 2024	Gift	-1,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Sep 17, 2024	Gift	-1,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 4, 2024	AwardD (derivative)	6,412	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 4, 2024	Award	2,947	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 4, 2023	AwardD (derivative)	12,124	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 4, 2023	Award	8,083	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Aug 10, 2022	Buy	150,000	8.62 USD	$1.3M	conv 59ClusterFirst in 12mo	SEC
Quanterix CorpListing on record	Jan 5, 2022	Award	2,668	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 5, 2022	AwardD (derivative)	4,002	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 5, 2021	AwardD (derivative)	7,900	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Jan 5, 2021	Award	2,270	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
EXICURE, INC.Listing on record	Jun 8, 2020	AwardD (derivative)	21,693	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Quanterix CorpListing on record	Mar 17, 2020	Buy	54,064	16.66 USD	$900.7K	conv 34	SEC
EXICURE, INC.Listing on record	Mar 16, 2020	Buy	291,066	1.21 USD	$352.2K	conv 44Cluster	SEC