Insider · CIK 0001205236

WALT DAVID R

Reports to the SEC for 4 companies · BILLERICA, MA

sec.gov

Transactions

Companies

Filings

CIK

0001205236

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-01-02	QTRXQuanterix CorpA Award	Director	AAward	+1,215 sh	—	—	1,872,890
2025-10-01	QTRXQuanterix CorpA Award	Director	AAward	+2,594 sh	$5.54	+$14.4K	1,871,675
2025-07-01	QTRXQuanterix CorpA Award	Director	AAward	+2,148 sh	$6.69	+$14.4K	1,869,081
2025-06-13	QTRXQuanterix CorpP Purchase	Director	PPurchase	+124K sh	$6.14	+$761K	1,866,933
2025-06-12	QTRXQuanterix CorpP Purchase	Director	PPurchase	+36K sh	$6.23	+$224K	1,742,943
2025-06-09	QTRXQuanterix CorpP Purchase	Director	PPurchase	+78.1K sh	$5.34	+$417K	1,706,933
2025-06-06	QTRXQuanterix CorpP Purchase	Director	PPurchase	+132K sh	$5.43	+$717K	1,628,802
2025-04-01	QTRXQuanterix CorpA Award	Director	AAward	+2,156 sh	$6.67	+$14.4K	1,496,933
2025-01-02	QTRXQuanterix CorpA Award	Director	AAward	+7,435 sh	—	—	1,494,777
2025-01-02	QTRXQuanterix Corp · Stock Option (Right to Buy)A Award	Director	AAward	+15.8K sh	—	—	15,821
2024-08-20	QTRXQuanterix CorpP Purchase	Director	PPurchase	+47K sh	$13.29	+$625K	1,487,342
2024-01-02	QTRXQuanterix CorpA Award	Director	AAward	+2,947 sh	—	—	1,442,342
2024-01-02	QTRXQuanterix Corp · Stock Option (Right to Buy)A Award	Director	AAward	+6,412 sh	—	—	6,412
2023-03-09	QTRXQuanterix CorpG Gift	Director	GGift	−1,000 sh	—	—	1,440,342
2023-01-03	QTRXQuanterix CorpA Award	Director	AAward	+8,083 sh	—	—	1,439,395
2023-01-03	QTRXQuanterix Corp · Stock Option (Right to Buy)A Award	Director	AAward	+12.1K sh	—	—	12,124
2022-10-12	QTRXQuanterix CorpG Gift	Director	GGift	−1,000 sh	—	—	1,441,342
2022-08-10	QTRXQuanterix CorpP Purchase	Director	PPurchase	+150K sh	$8.62	+$1.29M	1,431,312
2022-01-03	QTRXQuanterix CorpA Award	Director	AAward	+2,668 sh	—	—	1,281,312
2022-01-03	QTRXQuanterix Corp · Stock Option (Right to Buy)A Award	Director	AAward	+4,002 sh	—	—	4,002
2021-01-04	QTRXQuanterix CorpA Award	Director	AAward	+2,270 sh	—	—	1,278,644
2021-01-04	QTRXQuanterix Corp · Stock Option (Right to Buy)A Award	Director	AAward	+7,900 sh	—	—	7,900
2020-06-04	XCUREXICURE, INC. · Stock Option (right to buy)A Award	Director	AAward	+21.7K sh	—	—	21,693
2020-03-13	XCUREXICURE, INC.P Purchase	Director	PPurchase	+291K sh	$1.21	+$353K	2,058,777
2020-03-13	QTRXQuanterix CorpP Purchase	Director	PPurchase	+54.1K sh	$16.66	+$901K	1,276,374
2020-01-02	QTRXQuanterix CorpA Award	Director	AAward	+2,270 sh	—	—	1,222,310
2020-01-02	QTRXQuanterix Corp · Stock Option (Right to Buy)A Award	Director	AAward	+7,900 sh	—	—	7,900
2019-08-02	XCUREXICURE, INC.P Purchase	Director	PPurchase	+1M sh	$2.00	+$2M	1,767,711
2019-06-14	XCUREXICURE, INC. · Stock Option (right to buy)A Award	Director	AAward	+21.7K sh	—	—	21,693
2019-01-02	QTRXQuanterix CorpA Award	Director	AAward	+2,270 sh	—	—	1,220,040
2019-01-02	QTRXQuanterix Corp · Stock Option (Right to Buy)A Award	Director	AAward	+7,900 sh	—	—	7,900
2018-08-07	QTRXQuanterix CorpA Award	Director	AAward	+2,270 sh	—	—	1,217,770
2018-08-07	QTRXQuanterix Corp · Stock Option (Right to Buy)A Award	Director	AAward	+7,900 sh	—	—	7,900
2018-06-19	XCUREXICURE, INC. · Stock Option (right to buy)A Award	Director	AAward	+21.7K sh	—	—	21,693
2017-12-11	QTRXQuanterix CorpC Conversion	Director	CConversion	+33K sh	—	—	429,660
2017-12-11	QTRXQuanterix CorpC Conversion	Director	CConversion	+86.5K sh	—	—	516,177
2017-12-11	QTRXQuanterix CorpC Conversion	Director	CConversion	+335K sh	—	—	851,162
2017-12-11	QTRXQuanterix CorpC Conversion	Director	CConversion	+28.7K sh	—	—	879,853
2017-12-11	QTRXQuanterix CorpC Conversion	Director	CConversion	+136K sh	—	—	1,015,500
2017-12-11	QTRXQuanterix CorpP Purchase	Director	PPurchase	+200K sh	$15.00	+$3M	1,215,500
2017-12-11	QTRXQuanterix Corp · Series A-1 Preferred StockC Conversion	Director	CConversion	−106K sh	—	—	0
2017-12-11	QTRXQuanterix Corp · Series A-2 Preferred StockC Conversion	Director	CConversion	−278K sh	—	—	0
2017-12-11	QTRXQuanterix Corp · Series B Preferred StockC Conversion	Director	CConversion	−1.08M sh	—	—	0
2017-12-11	QTRXQuanterix Corp · Series C Preferred StockC Conversion	Director	CConversion	−92.2K sh	—	—	0
2017-12-11	QTRXQuanterix Corp · Series D Preferred StockC Conversion	Director	CConversion	−436K sh	—	—	0
2017-11-29	QTRXQuanterix Corp · Warrant to Purchase Series C Preferred Stock (right to buy)X Exercise of In-Money	Director	XExercise of In-Money	−4,327 sh	—	—	3,767
2017-11-29	QTRXQuanterix Corp · Series C Preferred StockX Exercise of In-Money	Director	XExercise of In-Money	+4,327 sh	—	—	88,448
2017-11-29	QTRXQuanterix Corp · Warrant to Purchase Series C Preferred Stock (right to buy)X Exercise of In-Money	Director	XExercise of In-Money	−3,060 sh	—	—	707
2017-11-29	QTRXQuanterix Corp · Series C Preferred StockX Exercise of In-Money	Director	XExercise of In-Money	+3,060 sh	—	—	91,508
2017-11-29	QTRXQuanterix Corp · Warrant to Purchase Series C Preferred Stock (right to buy)X Exercise of In-Money	Director	XExercise of In-Money	−707 sh	—	—	0

Recent filings

Accepted (ET)
Jan 64
WALT DAVID R0001205236-26-000001
SEC(opens sec.gov)
Oct 34
WALT DAVID R0001205236-25-000003
SEC(opens sec.gov)
Jul 24
WALT DAVID R0001562180-25-005252
SEC(opens sec.gov)
Jun 134
WALT DAVID R0001562180-25-004820
SEC(opens sec.gov)
Jun 94
WALT DAVID R0001562180-25-004657
SEC(opens sec.gov)
Apr 34
WALT DAVID R0001562180-25-002982
SEC(opens sec.gov)
Jan 64
WALT DAVID R0001562180-25-000211
SEC(opens sec.gov)
Sep 174
WALT DAVID R0001562180-24-006844
SEC(opens sec.gov)
Jan 44
WALT DAVID R0001562180-24-000235
SEC(opens sec.gov)
Jan 44
WALT DAVID R0001562180-23-000100
SEC(opens sec.gov)
Aug 104
WALT DAVID R0001562180-22-006034
SEC(opens sec.gov)
Jan 54
WALT DAVID R0001562180-22-000223
SEC(opens sec.gov)

Companies

Address

C/O QUANTERIX CORPORATION, 900 MIDDLESEX TURNPIKE

BILLERICA, MA, 01821