SEIFERT THOMAS J

NET

SEIFERT THOMAS J serves as officer: Chief Financial Officer at Cloudflare, Inc. (NET). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

107 trades

$246.97M

Net Position

Net Seller

$246.97M

Companies Traded

NET

Active Period

Mar 2021 – May 2026

107 total trades

Most Recent

Sell NET

May 19, 2026 · $2.01M

SEIFERT THOMAS J's Insider Trading at Cloudflare, Inc. (NET)

Buys

0 · $0.00

Sells

50 · $145.72M

Total Shares Bought

Total Shares Sold

1,137,911

NET Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
May 19, 2026	Sell	10,000	$200.61	$2.01M	221,914
Apr 17, 2026	Sell	10,000	$197.98	$1.98M	229,605
Mar 17, 2026	Sell	10,341	$212.30	$2.20M	234,766
Feb 24, 2026	Sell	41,457	$185.01	$7.67M	118,730
Feb 15, 2026	Sell	20,477	$195.85	$4.01M	0
Jan 21, 2026	Sell	10,000	$178.37	$1.78M	146,558
Dec 23, 2025	Sell	10,000	$201.69	$2.02M	147,133
Nov 21, 2025	Sell	41,555	$194.18	$8.07M	176,769
Oct 20, 2025	Sell	10,000	$211.81	$2.12M	199,017
Sep 22, 2025	Sell	10,000	$227.64	$2.28M	198,517
Aug 21, 2025	Sell	41,555	$190.64	$7.92M	229,472
Jul 29, 2025	Sell	59,530	$200.30	$11.92M	4,672
Jul 22, 2025	Sell	44,270	$199.71	$8.84M	251,050
Jun 23, 2025	Sell	10,000	$180.76	$1.81M	246,730
May 22, 2025	Sell	41,556	$156.78	$6.52M	274,141
Apr 28, 2025	Sell	10,000	$120.14	$1.20M	293,582
Mar 21, 2025	Sell	10,000	$120.00	$1.20M	293,582
Mar 6, 2025	Sell	15,000	$141.77	$2.13M	308,282
Feb 19, 2025	Sell	28,635	$162.07	$4.64M	312,543
Feb 5, 2025	Sell	15,000	$136.63	$2.05M	267,669
Jan 21, 2025	Sell	65,000	$119.74	$7.78M	281,203
Jan 6, 2025	Sell	15,000	$113.81	$1.71M	265,110
Dec 19, 2024	Sell	15,000	$112.72	$1.69M	264,662
Dec 5, 2024	Sell	15,000	$109.90	$1.65M	267,191
Nov 19, 2024	Sell	28,635	$95.03	$2.72M	280,804
Nov 4, 2024	Sell	15,000	$86.79	$1.30M	287,785
Oct 21, 2024	Sell	15,000	$90.88	$1.36M	283,045
Oct 4, 2024	Sell	15,000	$79.19	$1.19M	290,471
Sep 19, 2024	Sell	15,000	$78.36	$1.18M	283,503
Sep 5, 2024	Sell	15,000	$78.05	$1.17M	292,472
Aug 22, 2024	Sell	28,636	$82.84	$2.37M	285,633
Aug 5, 2024	Sell	15,000	$78.71	$1.18M	324,337
Jul 19, 2024	Sell	15,000	$78.89	$1.18M	316,203
Jul 3, 2024	Sell	15,000	$84.97	$1.27M	310,137
Jun 24, 2024	Sell	15,000	$78.47	$1.18M	315,294
Jun 6, 2024	Sell	15,000	$69.12	$1.04M	317,804
May 21, 2024	Sell	28,634	$75.13	$2.15M	321,997
May 6, 2024	Sell	15,000	$73.97	$1.11M	348,773
Apr 19, 2024	Sell	15,000	$87.02	$1.31M	344,069
Apr 4, 2024	Sell	15,000	$94.91	$1.42M	351,501
Mar 19, 2024	Sell	110,000	$91.77	$10.10M	345,080
Mar 5, 2024	Sell	15,000	$99.87	$1.50M	351,669
Feb 21, 2024	Sell	27,901	$96.56	$2.69M	363,470
Feb 12, 2024	Sell	50,000	$110.11	$5.51M	412,165
Feb 5, 2024	Sell	15,000	$81.87	$1.23M	380,565
Jan 19, 2024	Sell	15,000	$77.73	$1.17M	251,510
Jan 3, 2024	Sell	15,000	$76.80	$1.15M	244,701
Dec 19, 2023	Sell	15,000	$84.86	$1.27M	248,326
Dec 14, 2023	Sell	34,329	$80.21	$2.75M	243,495
Dec 8, 2023	Sell	400	$80.00	$32.0K	243,495