Thomas Josef Seifert's Insider Trades & SAST Disclosures

Thomas Josef Seifert's most recent trade in Cloudflare Inc - Ordinary Shares - Class A was a trade of 10,000 Employee Stock Option (right to buy) done . Disclosure was reported to the exchange on Sept. 17, 2026.

Stock Client Name Client Category Action Reported to Exchange Quantity Post Transaction Holding Traded % Avg. Price Value Security Type
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 17 Sep 2026 10,000 0 - - Employee Stock Option (right to buy)
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 17 Sep 2026 10,000 18,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 17 Sep 2026 10,000 8,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 17 Sep 2026 10,000 117,902 (0%) 0% - Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 333.62 per share. 17 Sep 2026 2,632 110,470 (0%) 0% 333.6 878,080 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 334.59 per share. 17 Sep 2026 1,868 108,602 (0%) 0% 334.6 625,015 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 332.50 per share. 17 Sep 2026 1,604 113,102 (0%) 0% 332.5 533,330 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 331.59 per share. 17 Sep 2026 1,196 114,706 (0%) 0% 331.6 396,581 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 330.23 per share. 17 Sep 2026 700 115,902 (0%) 0% 330.2 231,159 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 329.37 per share. 17 Sep 2026 700 116,602 (0%) 0% 329.4 230,561 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 335.32 per share. 17 Sep 2026 600 108,002 (0%) 0% 335.3 201,192 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 328.04 per share. 17 Sep 2026 300 117,302 (0%) 0% 328.0 98,412 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 336.51 per share. 17 Sep 2026 100 107,902 (0%) 0% 336.5 33,651 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 326.56 per share. 17 Sep 2026 100 117,602 (0%) 0% 326.6 32,656 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 320.89 per share. 17 Sep 2026 100 117,702 (0%) 0% 320.9 32,089 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 318.90 per share. 17 Sep 2026 100 117,802 (0%) 0% 318.9 31,890 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Payment of exercise price or tax liability using portion of securities received from the company at price $ 327.23 per share. 15 Sep 2026 2,944 107,902 (0%) 0% 327.2 963,365 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 17 Aug 2026 10,000 10,000 - - Employee Stock Option (right to buy)
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 17 Aug 2026 10,000 120,846 (0%) 0% - Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 17 Aug 2026 10,000 8,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 17 Aug 2026 10,000 18,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 308.23 per share. 17 Aug 2026 3,100 111,446 (0%) 0% 308.2 955,512 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 306.24 per share. 17 Aug 2026 2,944 117,002 (0%) 0% 306.2 901,579 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 307.29 per share. 17 Aug 2026 2,456 114,546 (0%) 0% 307.3 754,715 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 305.25 per share. 17 Aug 2026 900 119,946 (0%) 0% 305.2 274,724 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 309.07 per share. 17 Aug 2026 300 111,146 (0%) 0% 309.1 92,721 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 312.32 per share. 17 Aug 2026 200 110,946 (0%) 0% 312.3 62,464 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 314.61 per share. 17 Aug 2026 100 110,846 (0%) 0% 314.6 31,461 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Payment of exercise price or tax liability using portion of securities received from the company at price $ 315.78 per share. 15 Aug 2026 2,944 110,846 (0%) 0% 315.8 929,656 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 44.72 per share. 04 Aug 2026 55,000 168,790 (0%) 0% 44.7 2,459,600 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 04 Aug 2026 55,000 500,000 - - Performance Stock Option (right to buy)
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 300.28 per share. 04 Aug 2026 53,861 114,929 (0%) 0% 300.3 16,173,446 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 301.00 per share. 04 Aug 2026 1,139 113,790 (0%) 0% 301 342,839 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 15 Jul 2026 10,000 20,000 - - Employee Stock Option (right to buy)
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 15 Jul 2026 10,000 18,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 15 Jul 2026 10,000 8,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 15 Jul 2026 10,000 123,790 (0%) 0% - Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 277.68 per share. 15 Jul 2026 3,299 116,091 (0%) 0% 277.7 916,056 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Payment of exercise price or tax liability using portion of securities received from the company at price $ 281.75 per share. 15 Jul 2026 2,943 113,790 (0%) 0% 281.7 829,190 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 276.63 per share. 15 Jul 2026 1,741 119,390 (0%) 0% 276.6 481,618 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 275.79 per share. 15 Jul 2026 1,559 121,131 (0%) 0% 275.8 429,951 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 278.76 per share. 15 Jul 2026 1,201 114,890 (0%) 0% 278.8 334,786 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 279.91 per share. 15 Jul 2026 800 114,090 (0%) 0% 279.9 223,929 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 274.60 per share. 15 Jul 2026 500 122,690 (0%) 0% 274.6 137,302 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 270.50 per share. 15 Jul 2026 300 123,190 (0%) 0% 270.5 81,151 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 281.29 per share. 15 Jul 2026 300 113,790 (0%) 0% 281.3 84,388 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 266.19 per share. 15 Jul 2026 200 123,590 (0%) 0% 266.2 53,238 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 267.76 per share. 15 Jul 2026 100 123,490 (0%) 0% 267.8 26,776 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 15 Jun 2026 10,000 8,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 15 Jun 2026 10,000 18,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 15 Jun 2026 10,000 30,000 - - Employee Stock Option (right to buy)
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 15 Jun 2026 10,000 126,733 (0%) 0% - Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 233.44 per share. 15 Jun 2026 3,167 119,966 (0%) 0% 233.4 739,309 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Payment of exercise price or tax liability using portion of securities received from the company at price $ 228.48 per share. 15 Jun 2026 2,944 116,733 (0%) 0% 228.5 672,645 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 234.18 per share. 15 Jun 2026 2,633 117,333 (0%) 0% 234.2 616,600 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 228.91 per share. 15 Jun 2026 900 124,933 (0%) 0% 228.9 206,021 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 227.74 per share. 15 Jun 2026 900 125,833 (0%) 0% 227.7 204,963 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 230.90 per share. 15 Jun 2026 685 123,733 (0%) 0% 230.9 158,165 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 235.34 per share. 15 Jun 2026 600 116,733 (0%) 0% 235.3 141,203 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 232.00 per share. 15 Jun 2026 600 123,133 (0%) 0% 232.0 139,201 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 229.95 per share. 15 Jun 2026 515 124,418 (0%) 0% 230.0 118,426 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 15 May 2026 10,000 222,014 (0%) 0% - Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 15 May 2026 10,000 8,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 15 May 2026 10,000 18,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 15 May 2026 10,000 40,000 - - Employee Stock Option (right to buy)
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Payment of exercise price or tax liability using portion of securities received from the company at price $ 199.81 per share. 15 May 2026 9,667 212,014 (0%) 0% 199.8 1,931,563 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 201.21 per share. 15 May 2026 3,570 214,284 (0%) 0% 201.2 718,311 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 200.20 per share. 15 May 2026 2,432 217,854 (0%) 0% 200.2 486,895 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 202.17 per share. 15 May 2026 2,000 212,284 (0%) 0% 202.2 404,333 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 199.05 per share. 15 May 2026 928 220,286 (0%) 0% 199.1 184,722 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 197.81 per share. 15 May 2026 400 221,214 (0%) 0% 197.8 79,123 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 195.14 per share. 15 May 2026 300 221,614 (0%) 0% 195.1 58,541 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 203.01 per share. 15 May 2026 270 212,014 (0%) 0% 203.0 54,814 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 193.28 per share. 15 May 2026 100 221,914 (0%) 0% 193.3 19,328 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 15 Apr 2026 10,000 8,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 15 Apr 2026 10,000 18,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 15 Apr 2026 10,000 50,000 - - Employee Stock Option (right to buy)
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 15 Apr 2026 10,000 231,681 (0%) 0% - Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Payment of exercise price or tax liability using portion of securities received from the company at price $ 178.65 per share. 15 Apr 2026 2,944 221,681 (0%) 0% 178.7 525,946 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 200.51 per share. 15 Apr 2026 2,725 222,081 (0%) 0% 200.5 546,391 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 195.09 per share. 15 Apr 2026 2,076 229,605 (0%) 0% 195.1 405,001 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 196.04 per share. 15 Apr 2026 1,724 227,881 (0%) 0% 196.0 337,969 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 199.48 per share. 15 Apr 2026 1,475 224,806 (0%) 0% 199.5 294,229 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 196.97 per share. 15 Apr 2026 1,000 226,881 (0%) 0% 197.0 196,967 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 198.04 per share. 15 Apr 2026 600 226,281 (0%) 0% 198.0 118,821 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 200.95 per share. 15 Apr 2026 400 221,681 (0%) 0% 201.0 80,380 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 15 Mar 2026 10,341 60,000 - - Employee Stock Option (right to buy)
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 15 Mar 2026 10,341 234,966 (0%) 0% - Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 15 Mar 2026 10,341 8,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 15 Mar 2026 10,341 19,266 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 212.57 per share. 15 Mar 2026 5,000 226,625 (0%) 0% 212.6 1,062,831 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 211.69 per share. 15 Mar 2026 3,041 231,625 (0%) 0% 211.7 643,746 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Payment of exercise price or tax liability using portion of securities received from the company at price $ 212.45 per share. 15 Mar 2026 2,943 224,625 (0%) 0% 212.4 625,240 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 213.23 per share. 15 Mar 2026 2,000 224,625 (0%) 0% 213.2 426,465 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 207.68 per share. 15 Mar 2026 200 234,766 (0%) 0% 207.7 41,536 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 208.64 per share. 15 Mar 2026 100 234,666 (0%) 0% 208.6 20,864 Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 20 Feb 2026 10,000 127,009 (0%) 0% - Class A Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer 20 Feb 2026 10,000 8,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 20 Feb 2026 10,000 18,925 - - Class B Common Stock
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. 20 Feb 2026 10,000 70,341 - - Employee Stock Option (right to buy)
Cloudflare Inc (Class A)
Thomas Josef Seifert Chief Financial Officer Sale of securities on an exchange or to another person at price $ 177.18 per share. 20 Feb 2026 8,279 118,730 (0%) 0% 177.2 1,466,891 Class A Common Stock
*All Values are in $ Million
Client Category: Promoter/ KMP/ Director / Immediate Relatives / Employee / etc  
Security Type: Share/ Warrants / Convertible Debentures
Data as reported to USA Exchanges
View All The Insider Trades