THOMAS J. SEIFERT

Insider Reports History

Location
San Francisco, CA
Signature
/s/ Chad Skinner, by power of attorney
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by THOMAS J. SEIFERT:

Company Role Class Num Shares Value Price $ Report Date Ownership
Cloudflare, Inc. Chief Financial Officer Class A Common Stock 137,486 $27,957,351 $203.35 22 Dec 2025 Direct
Cloudflare, Inc. Chief Financial Officer Class B Common Stock 46,100 $10,831,195 $234.95 22 Dec 2025 Indirect
Cloudflare, Inc. Chief Financial Officer Class B Common Stock 8,925 $2,096,928 $234.95 22 Dec 2025 Direct
IPG PHOTONICS CORP Director Common Stock 8,946 $987,191 $110.35 24 May 2022 Direct
WOLFSPEED, INC. Director COMMON STOCK 20,476 $124,699 $6.09 03 Feb 2025 Direct
Cloudflare, Inc. Chief Financial Officer Employee Stock Option (right to buy) 90,341 22 Dec 2025 Direct

Insider Reports Filed by THOMAS J. SEIFERT

Symbol Company Period Transactions Value $ Form Type Role Filing Time
NET Cloudflare, Inc. 22 Dec 2025 9 -$2,016,931 4 Chief Financial Officer 23 Dec 2025, 16:14
NET Cloudflare, Inc. 20 Nov 2025 17 -$8,069,178 4 Chief Financial Officer 21 Nov 2025, 18:45
NET Cloudflare, Inc. 15 Nov 2025 1 -$4,312,246 4 Chief Financial Officer 17 Nov 2025, 18:29
NET Cloudflare, Inc. 20 Oct 2025 9 -$2,118,137 4 Chief Financial Officer 20 Oct 2025, 18:52
NET Cloudflare, Inc. 22 Sep 2025 11 -$2,276,444 4 Chief Financial Officer 22 Sep 2025, 18:30
NET Cloudflare, Inc. 20 Aug 2025 14 -$7,921,856 4 Chief Financial Officer 21 Aug 2025, 17:45
NET Cloudflare, Inc. 15 Aug 2025 1 -$4,000,992 4 Chief Financial Officer 19 Aug 2025, 17:41
NET Cloudflare, Inc. 25 Jul 2025 25 -$12,163,987 4 Chief Financial Officer 29 Jul 2025, 17:49
NET Cloudflare, Inc. 21 Jul 2025 20 -$8,841,178 4 Chief Financial Officer 22 Jul 2025, 19:22
NET Cloudflare, Inc. 20 Jun 2025 10 -$1,807,588 4 Chief Financial Officer 23 Jun 2025, 17:15
NET Cloudflare, Inc. 20 May 2025 7 -$6,515,117 4 Chief Financial Officer 22 May 2025, 16:10
NET Cloudflare, Inc. 15 May 2025 1 -$3,163,337 4 Chief Financial Officer 16 May 2025, 16:19
NET Cloudflare, Inc. 25 Apr 2025 5 -$1,201,354 4 Chief Financial Officer 28 Apr 2025, 16:18
NET Cloudflare, Inc. 20 Mar 2025 5 -$1,200,000 4 CHIEF FINANCIAL OFFICER 21 Mar 2025, 16:19
NET Cloudflare, Inc. 05 Mar 2025 10 -$2,126,488 4 Chief Financial Officer 06 Mar 2025, 16:30
NET Cloudflare, Inc. 15 Feb 2025 12 -$7,190,854 4 Chief Financial Officer 19 Feb 2025, 18:14
NET Cloudflare, Inc. 05 Feb 2025 1 $0 4 Chief Financial Officer 07 Feb 2025, 16:33
NET Cloudflare, Inc. 03 Feb 2025 11 -$2,049,447 4 Chief Financial Officer 05 Feb 2025, 18:39
WOLF WOLFSPEED, INC. 03 Feb 2025 1 +$10,000 4 Director 03 Feb 2025, 16:16
NET Cloudflare, Inc. 17 Jan 2025 13 -$7,782,870 4 Chief Financial Officer 21 Jan 2025, 16:47
NET Cloudflare, Inc. 03 Jan 2025 7 -$1,707,161 4 Chief Financial Officer 06 Jan 2025, 16:59
NET Cloudflare, Inc. 18 Dec 2024 13 -$1,690,860 4 Chief Financial Officer 19 Dec 2024, 17:19
WOLF WOLFSPEED, INC. 05 Dec 2024 1 $0 4 Director 09 Dec 2024, 16:04
WOLF WOLFSPEED, INC. 05 Dec 2024 0 $0 3 Director 09 Dec 2024, 16:03
NET Cloudflare, Inc. 04 Dec 2024 8 -$1,648,496 4 Chief Financial Officer 05 Dec 2024, 17:25
NET Cloudflare, Inc. 15 Nov 2024 10 -$4,058,528 4 CHIEF FINANCIAL OFFICER 19 Nov 2024, 19:14
NET Cloudflare, Inc. 04 Nov 2024 6 -$1,301,835 4 Chief Financial Officer 04 Nov 2024, 17:21
NET Cloudflare, Inc. 18 Oct 2024 6 -$1,363,158 4 Chief Financial Officer 21 Oct 2024, 16:50
NET Cloudflare, Inc. 03 Oct 2024 6 -$1,187,865 4 CHIEF FINANCIAL OFFICER 04 Oct 2024, 17:29
NET Cloudflare, Inc. 18 Sep 2024 6 -$1,175,378 4 CHIEF FINANCIAL OFFICER 19 Sep 2024, 17:13
NET Cloudflare, Inc. 04 Sep 2024 7 -$1,170,818 4 CHIEF FINANCIAL OFFICER 05 Sep 2024, 16:35
NET Cloudflare, Inc. 20 Aug 2024 7 -$2,372,117 4 CHIEF FINANCIAL OFFICER 22 Aug 2024, 16:12
NET Cloudflare, Inc. 15 Aug 2024 1 -$1,224,020 4 CHIEF FINANCIAL OFFICER 16 Aug 2024, 17:17
NET Cloudflare, Inc. 02 Aug 2024 9 -$1,180,714 4 CHIEF FINANCIAL OFFICER 05 Aug 2024, 17:30
NET Cloudflare, Inc. 18 Jul 2024 8 -$1,183,382 4 CHIEF FINANCIAL OFFICER 19 Jul 2024, 17:35
NET Cloudflare, Inc. 03 Jul 2024 6 -$1,274,571 4 CHIEF FINANCIAL OFFICER 03 Jul 2024, 16:57
NET Cloudflare, Inc. 20 Jun 2024 7 -$1,176,991 4 CHIEF FINANCIAL OFFICER 24 Jun 2024, 16:18
NET Cloudflare, Inc. 05 Jun 2024 6 -$1,036,794 4 CHIEF FINANCIAL OFFICER 06 Jun 2024, 16:09
NET Cloudflare, Inc. 20 May 2024 6 -$2,151,359 4 CHIEF FINANCIAL OFFICER 21 May 2024, 16:59
NET Cloudflare, Inc. 15 May 2024 1 -$1,106,176 4 CHIEF FINANCIAL OFFICER 17 May 2024, 16:49
NET Cloudflare, Inc. 03 May 2024 9 -$1,109,476 4 CHIEF FINANCIAL OFFICER 06 May 2024, 16:17
NET Cloudflare, Inc. 18 Apr 2024 7 -$1,305,249 4 CHIEF FINANCIAL OFFICER 19 Apr 2024, 17:18
NET Cloudflare, Inc. 03 Apr 2024 7 -$1,423,642 4 CHIEF FINANCIAL OFFICER 04 Apr 2024, 15:31
NET Cloudflare, Inc. 15 Mar 2024 27 -$10,095,015 4 Chief Financial Officer 19 Mar 2024, 16:10
NET Cloudflare, Inc. 04 Mar 2024 8 -$1,498,088 4 CHIEF FINANCIAL OFFICER 05 Mar 2024, 18:12
NET Cloudflare, Inc. 20 Feb 2024 8 -$2,694,074 4 CHIEF FINANCIAL OFFICER 21 Feb 2024, 19:52
NET Cloudflare, Inc. 15 Feb 2024 1 -$1,527,916 4 CHIEF FINANCIAL OFFICER 20 Feb 2024, 17:34
NET Cloudflare, Inc. 09 Feb 2024 14 -$5,505,730 4 Chief Financial Officer 12 Feb 2024, 20:10
NET Cloudflare, Inc. 02 Feb 2024 9 -$1,227,981 4 Chief Financial Officer 05 Feb 2024, 17:28
NET Cloudflare, Inc. 24 Jan 2024 1 $0 4 Chief Financial Officer 26 Jan 2024, 17:54
NET Cloudflare, Inc. 18 Jan 2024 7 -$1,165,979 4 Chief Financial Officer 19 Jan 2024, 18:49
NET Cloudflare, Inc. 03 Jan 2024 6 -$1,152,010 4 Chief Financial Officer 03 Jan 2024, 19:30
NET Cloudflare, Inc. 18 Dec 2023 6 -$1,272,851 4 Chief Financial Officer 19 Dec 2023, 16:32
NET Cloudflare, Inc. 13 Dec 2023 5 -$2,753,546 4 Chief Financial Officer 14 Dec 2023, 16:51
NET Cloudflare, Inc. 06 Dec 2023 5 -$32,000 4 Chief Financial Officer 08 Dec 2023, 16:18
NET Cloudflare, Inc. 04 Dec 2023 6 -$2,412,690 4 Chief Financial Officer 05 Dec 2023, 18:58
NET Cloudflare, Inc. 17 Nov 2023 7 -$1,219,023 4 Chief Financial Officer 20 Nov 2023, 16:30
NET Cloudflare, Inc. 15 Nov 2023 1 -$563,364 4 Chief Financial Officer 17 Nov 2023, 17:13
NET Cloudflare, Inc. 03 Nov 2023 10 -$947,641 4 Chief Financial Officer 06 Nov 2023, 16:15
NET Cloudflare, Inc. 18 Oct 2023 7 -$945,432 4 Chief Financial Officer 19 Oct 2023, 18:53
NET Cloudflare, Inc. 03 Oct 2023 8 -$888,422 4 Chief Financial Officer 04 Oct 2023, 16:16
NET Cloudflare, Inc. 18 Sep 2023 6 -$926,176 4 Chief Financial Officer 19 Sep 2023, 16:04
NET Cloudflare, Inc. 05 Sep 2023 7 -$967,879 4 Chief Financial Officer 06 Sep 2023, 17:55
NET Cloudflare, Inc. 18 Aug 2023 7 -$985,786 4 Chief Financial Officer 21 Aug 2023, 17:59
NET Cloudflare, Inc. 15 Aug 2023 1 -$494,147 4 Chief Financial Officer 16 Aug 2023, 19:04
NET Cloudflare, Inc. 03 Aug 2023 6 -$972,912 4 Chief Financial Officer 07 Aug 2023, 16:15
NET Cloudflare, Inc. 18 Jul 2023 8 -$1,083,591 4 Chief Financial Officer 19 Jul 2023, 16:36
NET Cloudflare, Inc. 03 Jul 2023 6 -$983,938 4 Chief Financial Officer 05 Jul 2023, 16:11
NET Cloudflare, Inc. 20 Jun 2023 7 -$1,009,237 4 Chief Financial Officer 21 Jun 2023, 17:06
NET Cloudflare, Inc. 05 Jun 2023 8 -$1,033,172 4 Chief Financial Officer 06 Jun 2023, 18:46
NET Cloudflare, Inc. 18 May 2023 9 -$969,214 4 Chief Financial Officer 22 May 2023, 18:06
NET Cloudflare, Inc. 15 May 2023 1 -$63,193 4 Chief Financial Officer 17 May 2023, 17:04
NET Cloudflare, Inc. 03 May 2023 6 -$634,932 4 Chief Financial Officer 04 May 2023, 16:09
NET Cloudflare, Inc. 01 May 2023 2 $0 4 Chief Financial Officer 03 May 2023, 17:31
NET Cloudflare, Inc. 19 Apr 2023 1 $0 4 Chief Financial Officer 21 Apr 2023, 16:52
NET Cloudflare, Inc. 18 Apr 2023 7 -$967,346 4 Chief Financial Officer 19 Apr 2023, 17:09
NET Cloudflare, Inc. 30 Mar 2023 16 -$3,916,960 4 Chief Financial Officer 03 Apr 2023, 18:10
NET Cloudflare, Inc. 20 Mar 2023 6 -$803,484 4 Chief Financial Officer 21 Mar 2023, 19:57
NET Cloudflare, Inc. 27 Feb 2023 6 -$1,205,022 4 Chief Financial Officer 28 Feb 2023, 16:12
NET Cloudflare, Inc. 15 Feb 2023 5 -$1,697,719 4 Chief Financial Officer 17 Feb 2023, 16:24
NET Cloudflare, Inc. 13 Feb 2023 11 -$1,252,320 4 Chief Financial Officer 14 Feb 2023, 18:18
NET Cloudflare, Inc. 30 Jan 2023 7 -$1,018,701 4 Chief Financial Officer 31 Jan 2023, 16:04
NET Cloudflare, Inc. 17 Jan 2023 9 -$901,438 4 Chief Financial Officer 18 Jan 2023, 15:11
NET Cloudflare, Inc. 19 Dec 2022 16 -$1,781,107 4 Chief Financial Officer 04 Jan 2023, 17:03
NET Cloudflare, Inc. 05 Dec 2022 9 -$890,501 4 Chief Financial Officer 06 Dec 2022, 16:00
NET Cloudflare, Inc. 21 Nov 2022 7 -$912,325 4 Chief Financial Officer 22 Nov 2022, 15:05
NET Cloudflare, Inc. 11 Nov 2022 5 -$2,507,495 4/A Chief Financial Officer 15 Nov 2022, 17:23
NET Cloudflare, Inc. 07 Nov 2022 6 -$815,571 4 Chief Financial Officer 08 Nov 2022, 16:31
IPGP IPG PHOTONICS CORP 24 May 2022 1 $0 4 Director 25 May 2022, 16:15
NET Cloudflare, Inc. 12 Apr 2022 13 -$1,150,588 4 Chief Financial Officer 14 Apr 2022, 16:54
NET Cloudflare, Inc. 29 Mar 2022 9 -$1,293,468 4 Chief Financial Officer 30 Mar 2022, 17:16
NET Cloudflare, Inc. 17 Mar 2022 5 -$1,000,000 4 Chief Financial Officer 17 Mar 2022, 20:22
NET Cloudflare, Inc. 17 Feb 2022 11 -$1,062,292 4 Chief Financial Officer 22 Feb 2022, 15:40
NET Cloudflare, Inc. 14 Feb 2022 1 $0 4 Chief Financial Officer 16 Feb 2022, 18:52
NET Cloudflare, Inc. 02 Feb 2022 1 $0 4 Chief Financial Officer 04 Feb 2022, 16:28
NET Cloudflare, Inc. 18 Jan 2022 11 -$1,910,227 4 Chief Financial Officer 20 Jan 2022, 15:22
NET Cloudflare, Inc. 04 Jan 2022 18 -$2,287,586 4 Chief Financial Officer 05 Jan 2022, 19:17
NET Cloudflare, Inc. 21 Dec 2021 15 -$2,790,805 4 Chief Financial Officer 22 Dec 2021, 15:17
NET Cloudflare, Inc. 07 Dec 2021 9 -$3,140,754 4 Chief Financial Officer 08 Dec 2021, 16:01
NET Cloudflare, Inc. 23 Nov 2021 14 -$3,673,642 4 Chief Financial Officer 24 Nov 2021, 17:38
NET Cloudflare, Inc. 09 Nov 2021 14 -$4,086,266 4 Chief Financial Officer 10 Nov 2021, 15:08
NET Cloudflare, Inc. 26 Oct 2021 12 -$3,727,243 4 Chief Financial Officer 28 Oct 2021, 16:36
NET Cloudflare, Inc. 12 Oct 2021 10 -$2,968,376 4 Chief Financial Officer 13 Oct 2021, 19:41
NET Cloudflare, Inc. 28 Sep 2021 10 -$2,288,596 4 Chief Financial Officer 29 Sep 2021, 16:54
NET Cloudflare, Inc. 14 Sep 2021 8 -$2,546,113 4 Chief Financial Officer 15 Sep 2021, 21:01
NET Cloudflare, Inc. 30 Aug 2021 10 -$2,429,562 4 Chief Financial Officer 31 Aug 2021, 18:34
NET Cloudflare, Inc. 17 Aug 2021 7 -$2,387,312 4 Chief Financial Officer 18 Aug 2021, 19:37
NET Cloudflare, Inc. 03 Aug 2021 7 -$2,375,169 4 Chief Financial Officer 05 Aug 2021, 19:03
NET Cloudflare, Inc. 20 Jul 2021 11 -$2,135,463 4 Chief Financial Officer 22 Jul 2021, 16:58
NET Cloudflare, Inc. 06 Jul 2021 7 -$2,161,262 4 Chief Financial Officer 07 Jul 2021, 18:50
NET Cloudflare, Inc. 24 Jun 2021 5 -$5,263,990 4 Chief Financial Officer 25 Jun 2021, 18:55
NET Cloudflare, Inc. 22 Jun 2021 7 -$2,045,635 4 Chief Financial Officer 23 Jun 2021, 17:44
NET Cloudflare, Inc. 14 Jun 2021 5 -$4,759,430 4 Chief Financial Officer 15 Jun 2021, 17:33
NET Cloudflare, Inc. 08 Jun 2021 8 -$1,789,660 4 Chief Financial Officer 10 Jun 2021, 16:24
NET Cloudflare, Inc. 25 May 2021 6 -$1,594,498 4 Chief Financial Officer 27 May 2021, 08:23
IPGP IPG PHOTONICS CORP 25 May 2021 1 $0 4 Director 26 May 2021, 16:19
NET Cloudflare, Inc. 11 May 2021 11 -$1,401,304 4 Chief Financial Officer 12 May 2021, 17:30