SEC Insider Transactions from FOUNTAIN THOMAS DEAN.

Last updated: 2026-03-14 11:48 UTC | Total transactions: 107

Thomas Dean Fountain, EVP of Global Services and Strategy at F5, Inc. ($FFIV), sold shares on the open market 19 times over the past year, totaling about $6.9 million. His most recent sale occurred on February 10, 2026. These transactions rank him 1,512th among 11,678 insiders by sale value, below the average of $8.6 million across about 6.4 sales per insider. Fountain made no open market purchases in the last 365 days.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Feb. 10, 2026 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1297 $278.32 8,060.0000 58,164,000 13.86% 0.00%
Feb. 1, 2026 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1042 $0.00 3,127.0000 58,164,000 24.99% 0.00%
Feb. 1, 2026 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 2699 $0.00 10,759.0000 58,164,000 33.49% 0.00%
Feb. 1, 2026 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 1402 $275.61 9,357.0000 58,164,000 13.03% 0.00%
Feb. 1, 2026 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 950 $0.00 6,654.0000 58,164,000 12.49% 0.00%
Feb. 1, 2026 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 707 $0.00 7,786.0000 58,164,000 8.32% 0.00%
Jan. 26, 2026 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 3343 $261.87 8,060.0000 58,164,000 29.32% 0.01%
Jan. 20, 2026 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1110 $262.73 11,403.0000 58,164,000 8.87% 0.00%
Jan. 12, 2026 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1110 $265.00 12,513.0000 58,164,000 8.15% 0.00%
Jan. 5, 2026 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1110 $263.79 13,623.0000 58,164,000 7.53% 0.00%
Dec. 29, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1100 $262.86 14,733.0000 58,684,000 6.95% 0.00%
Dec. 22, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1110 $257.90 15,833.0000 58,684,000 6.55% 0.00%
Dec. 15, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1110 $264.76 16,943.0000 58,684,000 6.15% 0.00%
Dec. 8, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1110 $248.66 18,053.0000 58,684,000 5.79% 0.00%
Dec. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1110 $236.99 19,163.0000 58,684,000 5.48% 0.00%
Nov. 24, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1110 $234.92 20,273.0000 58,684,000 5.19% 0.00%
Nov. 18, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1110 $227.44 21,383.0000 58,684,000 4.93% 0.00%
Nov. 3, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy A Restricted Stock Unit 8493 $0.00 8,493.0000 58,684,000 9999.99% 0.01%
Nov. 3, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1095 $250.18 24,768.0000 58,684,000 4.23% 0.00%
Nov. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 3003 $0.00 42,598.0000 58,684,000 7.58% 0.01%
Nov. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 11787 $253.05 30,811.0000 58,684,000 27.67% 0.02%
Nov. 3, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1683 $248.44 29,128.0000 58,684,000 5.46% 0.00%
Nov. 3, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 3265 $249.38 25,863.0000 58,684,000 11.21% 0.01%
Oct. 31, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy A Common Stock 18896 $0.00 39,595.0000 58,684,000 91.29% 0.03%
Nov. 3, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 2161 $251.05 22,607.0000 58,684,000 8.72% 0.00%
Nov. 3, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 114 $252.98 22,493.0000 58,684,000 0.50% 0.00%
Nov. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1009 $0.00 0.0000 58,684,000 100.00% 0.00%
Nov. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1043 $0.00 4,169.0000 58,684,000 20.01% 0.00%
Nov. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 951 $0.00 7,604.0000 58,684,000 11.12% 0.00%
Aug. 4, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1347 $309.73 20,699.0000 58,773,000 6.11% 0.00%
Aug. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 950 $0.00 8,555.0000 58,773,000 9.99% 0.00%
Aug. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1042 $0.00 5,212.0000 58,773,000 16.66% 0.00%
Aug. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1009 $0.00 1,009.0000 58,773,000 50.00% 0.00%
Aug. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 1615 $313.42 22,046.0000 58,773,000 6.83% 0.00%
Aug. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 3001 $0.00 23,661.0000 58,773,000 14.53% 0.01%
May 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 3002 $0.00 23,530.0000 59,058,000 14.62% 0.01%
May 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 1523 $264.74 22,007.0000 59,058,000 6.47% 0.00%
May 2, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1347 $269.03 20,660.0000 59,058,000 6.12% 0.00%
May 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1009 $0.00 2,018.0000 59,058,000 33.33% 0.00%
May 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1042 $0.00 6,254.0000 59,058,000 14.28% 0.00%
May 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 951 $0.00 9,505.0000 59,058,000 9.10% 0.00%
Feb. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 1545 $297.26 21,842.0000 59,058,000 6.61% 0.00%
Feb. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 3001 $0.00 23,387.0000 59,058,000 14.72% 0.01%
Feb. 3, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1314 $293.40 20,528.0000 59,058,000 6.02% 0.00%
Feb. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1009 $0.00 3,027.0000 59,058,000 25.00% 0.00%
Feb. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1042 $0.00 7,296.0000 59,058,000 12.50% 0.00%
Feb. 1, 2025 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 950 $0.00 10,456.0000 59,058,000 8.33% 0.00%
Nov. 4, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 200 $232.99 20,386.0000 59,359,000 0.97% 0.00%
Nov. 4, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 2477 $232.41 20,586.0000 59,359,000 10.74% 0.00%
Nov. 4, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 715 $231.30 23,063.0000 59,359,000 3.01% 0.00%
Nov. 4, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 540 $229.98 23,778.0000 59,359,000 2.22% 0.00%
Nov. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 678 $0.00 0.0000 59,359,000 100.00% 0.00%
Nov. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1043 $0.00 8,338.0000 59,359,000 11.12% 0.00%
Nov. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy A Restricted Stock Unit 11406 $0.00 11,406.0000 59,359,000 9999.99% 0.02%
Nov. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 2730 $0.00 32,852.0000 59,359,000 9.06% 0.00%
Nov. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 8534 $233.88 24,318.0000 59,359,000 25.98% 0.01%
Nov. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1009 $0.00 4,036.0000 59,359,000 20.00% 0.00%
Oct. 31, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy A Common Stock 14122 $0.00 30,122.0000 59,359,000 88.26% 0.02%
Aug. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 678 $0.00 678.0000 59,461,000 50.00% 0.00%
Aug. 2, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 851 $192.71 16,000.0000 59,461,000 5.05% 0.00%
Aug. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1042 $0.00 9,381.0000 59,461,000 10.00% 0.00%
Aug. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1009 $0.00 5,045.0000 59,461,000 16.67% 0.00%
Aug. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 1382 $0.00 16,851.0000 59,461,000 7.58% 0.00%
Aug. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 1042 $0.00 18,233.0000 59,461,000 6.06% 0.00%
Aug. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 678 $0.00 16,182.0000 59,461,000 4.37% 0.00%
Aug. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 1009 $0.00 17,191.0000 59,461,000 6.24% 0.00%
May 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1009 $0.00 6,054.0000 60,270,000 14.29% 0.00%
May 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1042 $0.00 10,423.0000 60,270,000 9.09% 0.00%
May 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 678 $0.00 1,356.0000 60,270,000 33.33% 0.00%
May 2, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 851 $167.53 15,504.0000 60,270,000 5.20% 0.00%
May 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 1382 $0.00 16,355.0000 60,270,000 7.79% 0.00%
May 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 1042 $0.00 17,737.0000 60,270,000 6.24% 0.00%
May 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 1009 $0.00 16,695.0000 60,270,000 6.43% 0.00%
May 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 678 $0.00 15,686.0000 60,270,000 4.52% 0.00%
Feb. 8, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 851 $183.06 15,008.0000 60,270,000 5.37% 0.00%
Feb. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 2729 $0.00 17,274.0000 60,270,000 18.76% 0.00%
Feb. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 1415 $0.00 15,859.0000 60,270,000 8.19% 0.00%
Feb. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1009 $0.00 7,063.0000 60,270,000 12.50% 0.00%
Feb. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 678 $0.00 2,034.0000 60,270,000 25.00% 0.00%
Feb. 1, 2024 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1042 $0.00 11,465.0000 60,270,000 8.33% 0.00%
Nov. 2, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 3962 $150.35 14,856.0000 60,270,000 21.05% 0.01%
Nov. 2, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 311 $151.70 14,545.0000 60,270,000 2.09% 0.00%
Nov. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 2831 $0.00 25,515.0000 60,270,000 12.48% 0.00%
Nov. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1144 $0.00 0.0000 60,270,000 100.00% 0.00%
Nov. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 678 $0.00 2,712.0000 60,270,000 20.00% 0.00%
Nov. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy A Restricted Stock Unit 12507 $0.00 12,507.0000 60,270,000 9999.99% 0.02%
Nov. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1009 $0.00 8,072.0000 60,270,000 11.11% 0.00%
Nov. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 6697 $0.00 18,818.0000 60,270,000 26.25% 0.01%
Oct. 31, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy A Common Stock 10685 $0.00 22,684.0000 60,270,000 89.05% 0.02%
Aug. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 2830 $0.00 14,320.0000 0 24.63% 0.00%
Aug. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 1402 $0.00 12,918.0000 0 9.79% 0.00%
Aug. 2, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 919 $159.08 11,999.0000 0 7.11% 0.00%
Aug. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1143 $0.00 1,144.0000 0 49.98% 0.00%
Aug. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 678 $0.00 3,390.0000 0 16.67% 0.00%
Aug. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1009 $0.00 9,081.0000 0 10.00% 0.00%
May 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 2830 $0.00 13,811.0000 0 25.77% 0.00%
May 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1009 $0.00 10,090.0000 0 9.09% 0.00%
May 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 678 $0.00 4,068.0000 0 14.29% 0.00%
May 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1143 $0.00 2,287.0000 0 33.32% 0.00%
May 2, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 919 $133.02 11,490.0000 0 7.41% 0.00%
May 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 1402 $0.00 12,409.0000 0 10.15% 0.00%
Feb. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1009 $0.00 11,099.0000 0 8.33% 0.00%
Feb. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 678 $0.00 4,746.0000 0 12.50% 0.00%
Feb. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Restricted Stock Unit 1143 $0.00 3,430.0000 0 24.99% 0.00%
Feb. 2, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy S Common Stock 1156 $151.49 10,981.0000 0 9.52% 0.00%
Feb. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy F Common Stock 1446 $0.00 12,137.0000 0 10.65% 0.00%
Feb. 1, 2023 F5, INC. $FFIV FOUNTAIN THOMAS DEAN EVP Global Services & Strategy M Common Stock 2830 $0.00 13,583.0000 0 26.32% 0.00%