Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Syndax Pharmaceuticals Inc (SNDX) since 2016 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Syndax Pharmaceuticals Inc. Table 2 shows the detailed insider transactions. This company's CIK number is 1395937.
Total stock buying since 2016: $2,589,746.
Total stock sales since 2016: $46,106,221.
Total stock option exercises since 2016: $16,569,465.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2025 | 29,765 | $241,896 | 95,927 | $1,410,815 | 71,488 | $514,712 |
| 2024 | 1,250 | $25,037 | 0 | $0 | 0 | $0 |
| 2023 | 0 | $0 | 484,588 | $10,458,702 | 483,942 | $3,560,763 |
| 2022 | 0 | $0 | 818,909 | $18,360,125 | 786,029 | $6,739,405 |
| 2021 | 14,467 | $204,804 | 558,139 | $11,004,149 | 564,039 | $4,230,010 |
| 2020 | 12,500 | $100,000 | 225,376 | $4,684,930 | 225,376 | $1,499,221 |
| 2019 | 32,504 | $217,051 | 0 | $0 | 0 | $0 |
| 2018 | 200 | $958 | 7,500 | $112,500 | 7,500 | $23,100 |
| 2017 | 0 | $0 | 5,000 | $75,000 | 732 | $2,254 |
| 2016 | 150,000 | $1,800,000 | 0 | $0 | 0 | $0 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2025-08 | 0 | $0 | 57,600 | $875,096 | 57,600 | $414,720 |
| 2025-07 | 0 | $0 | 8,830 | $81,986 | 0 | $0 |
| 2025-05 | 29,765 | $241,896 | 0 | $0 | 0 | $0 |
| 2025-03 | 0 | $0 | 7,814 | $117,561 | 13,888 | $99,992 |
| 2025-02 | 0 | $0 | 21,683 | $336,172 | 0 | $0 |
| 2024-06 | 1,250 | $25,037 | 0 | $0 | 0 | $0 |
| 2023-08 | 0 | $0 | 135,855 | $2,663,244 | 135,855 | $1,140,237 |
| 2023-07 | 0 | $0 | 52,855 | $1,078,083 | 52,855 | $463,538 |
| 2023-06 | 0 | $0 | 53,432 | $1,132,288 | 52,855 | $400,376 |
| 2023-05 | 0 | $0 | 52,855 | $1,131,466 | 52,855 | $337,214 |
| 2023-04 | 0 | $0 | 52,855 | $1,032,258 | 52,855 | $337,214 |
| 2023-03 | 0 | $0 | 52,854 | $1,190,694 | 52,854 | $337,208 |
| 2023-02 | 0 | $0 | 83,882 | $2,230,669 | 83,813 | $544,976 |
| 2022-10 | 0 | $0 | 46,130 | $1,184,927 | 46,130 | $393,646 |
| 2022-09 | 0 | $0 | 532,223 | $12,522,404 | 532,223 | $4,637,832 |
| 2022-08 | 0 | $0 | 25,000 | $625,900 | 25,000 | $158,375 |
| 2022-07 | 0 | $0 | 109,003 | $2,167,217 | 109,003 | $746,517 |
| 2022-04 | 0 | $0 | 104,173 | $1,820,051 | 73,673 | $803,035 |
| 2022-02 | 0 | $0 | 2,380 | $39,626 | 0 | $0 |
| 2021-12 | 0 | $0 | 201,156 | $4,051,954 | 207,056 | $1,631,926 |
| 2021-11 | 0 | $0 | 14,030 | $252,988 | 14,030 | $117,922 |
| 2021-10 | 0 | $0 | 61,000 | $1,168,139 | 61,000 | $439,199 |
| 2021-09 | 0 | $0 | 192,312 | $3,756,755 | 192,312 | $1,384,644 |
| 2021-08 | 0 | $0 | 15,635 | $246,329 | 15,635 | $123,203 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-08-18 | Podlesak Dennis | Sale | 19,200 | 15.84 | 304,166 |
| 2025-08-18 | Podlesak Dennis | Option Ex | 19,200 | 7.20 | 138,240 |
| 2025-08-15 | Podlesak Dennis | Sale | 19,200 | 15.54 | 298,406 |
| 2025-08-15 | Podlesak Dennis | Option Ex | 19,200 | 7.20 | 138,240 |
| 2025-08-14 | Podlesak Dennis | Sale | 19,200 | 14.19 | 272,524 |
| 2025-08-14 | Podlesak Dennis | Option Ex | 19,200 | 7.20 | 138,240 |
| 2025-07-16 | Metzger Michael A (Chief Executive Officer) | Sale | 7,534 | 9.29 | 69,953 |
| 2025-07-16 | Goldan Keith A. (Chief Financial Officer) | Sale | 1,296 | 9.29 | 12,033 |
| 2025-05-19 | Huber Martin H. Jr. | Buy | 5,000 | 8.99 | 44,950 |
| 2025-05-19 | Goldan Keith A. (Chief Financial Officer) | Buy | 3,000 | .00 | 0 |
| 2025-05-19 | Katkin Keith | Buy | 10,000 | 9.11 | 91,120 |
| 2025-05-16 | Botwood Nicholas A.j. (Head of R&D, CMO) | Buy | 11,765 | 8.99 | 105,826 |
| 2025-03-14 | Metzger Michael A (Chief Executive Officer) | Option Ex | 6,074 | 7.20 | 43,732 |
| 2025-03-04 | Metzger Michael A (Chief Executive Officer) | Sale | 7,814 | 15.04 | 117,561 |
| 2025-03-04 | Metzger Michael A (Chief Executive Officer) | Option Ex | 7,814 | 7.20 | 56,260 |
| 2025-02-10 | Gallagher Neil (President, Head of R&D) | Sale | 4,618 | 15.50 | 71,597 |
| 2025-02-10 | Metzger Michael A (Chief Executive Officer) | Sale | 13,288 | 15.50 | 206,017 |
| 2025-02-10 | Goldan Keith A. (Chief Financial Officer) | Sale | 3,777 | 15.50 | 58,558 |
| 2024-06-14 | Goldan Keith A. (Chief Financial Officer) | Buy | 1,250 | 20.03 | 25,037 |
| 2023-08-09 | Morrison Briggs | Sale | 52,855 | 18.27 | 965,396 |
| 2023-08-09 | Morrison Briggs | Option Ex | 52,855 | 8.77 | 463,538 |
| 2023-08-02 | Meury William | Sale | 83,000 | 20.46 | 1,697,848 |
| 2023-08-02 | Meury William | Option Ex | 83,000 | 8.15 | 676,699 |
| 2023-07-10 | Morrison Briggs | Sale | 52,855 | 20.40 | 1,078,083 |
| 2023-07-10 | Morrison Briggs | Option Ex | 52,855 | 8.77 | 463,538 |
| 2023-06-13 | Goldan Keith A. (Chief Financial Officer) | Sale | 577 | 22.31 | 12,872 |
| 2023-06-09 | Morrison Briggs | Sale | 52,855 | 21.18 | 1,119,416 |
| 2023-06-09 | Morrison Briggs | Option Ex | 52,855 | 7.58 | 400,376 |
| 2023-05-09 | Morrison Briggs | Sale | 52,855 | 21.41 | 1,131,466 |
| 2023-05-09 | Morrison Briggs | Option Ex | 52,855 | 6.38 | 337,214 |
| 2023-04-10 | Morrison Briggs | Sale | 52,855 | 19.53 | 1,032,258 |
| 2023-04-10 | Morrison Briggs | Option Ex | 52,855 | 6.38 | 337,214 |
| 2023-03-13 | Morrison Briggs (President, Head of R&D) | Sale | 52,854 | 22.53 | 1,190,694 |
| 2023-03-13 | Morrison Briggs (President, Head of R&D) | Option Ex | 52,854 | 6.38 | 337,208 |
| 2023-02-15 | Ordentlich Peter (Chief Scientific Officer) | Sale | 25,000 | 25.84 | 646,100 |
| 2023-02-15 | Ordentlich Peter (Chief Scientific Officer) | Option Ex | 25,000 | 6.79 | 169,750 |
| 2023-02-06 | Morrison Briggs (President, Head of R&D) | Sale | 52,854 | 26.83 | 1,417,914 |
| 2023-02-06 | Morrison Briggs (President, Head of R&D) | Option Ex | 52,854 | 6.38 | 337,208 |
| 2023-02-06 | Metzger Michael A (Chief Executive Officer) | Sale | 5,959 | 27.64 | 164,694 |
| 2023-02-06 | Metzger Michael A (Chief Executive Officer) | Option Ex | 5,959 | 6.38 | 38,018 |
| 2023-02-01 | Ordentlich Peter (Chief Scientific Officer) | Sale | 69 | 28.43 | 1,961 |
| 2022-10-06 | Metzger Michael A (Chief Executive Officer) | Sale | 16,231 | 25.29 | 410,514 |
| 2022-10-06 | Metzger Michael A (Chief Executive Officer) | Option Ex | 16,231 | 8.77 | 142,345 |
| 2022-10-06 | Katkin Keith | Sale | 29,899 | 25.90 | 774,413 |
| 2022-10-06 | Katkin Keith | Option Ex | 29,899 | 8.40 | 251,301 |
| 2022-09-20 | Morrison Briggs (President, Head of R&D) | Sale | 59,649 | 23.25 | 1,387,018 |
| 2022-09-20 | Morrison Briggs (President, Head of R&D) | Option Ex | 59,649 | 10.90 | 650,174 |
| 2022-09-19 | Morrison Briggs (President, Head of R&D) | Sale | 114,339 | 23.03 | 2,632,998 |
| 2022-09-19 | Morrison Briggs (President, Head of R&D) | Option Ex | 114,339 | 10.90 | 1,246,295 |
| 2022-09-16 | Morrison Briggs (President, Head of R&D) | Sale | 125,000 | 23.22 | 2,902,500 |
| 2022-09-16 | Morrison Briggs (President, Head of R&D) | Option Ex | 125,000 | 9.05 | 1,131,250 |
| 2022-09-16 | Podlesak Dennis | Sale | 11,975 | 23.43 | 280,610 |
| 2022-09-16 | Podlesak Dennis | Option Ex | 11,975 | 6.33 | 75,861 |
| 2022-09-15 | Morrison Briggs (President, Head of R&D) | Sale | 66,775 | 24.20 | 1,616,021 |
| 2022-09-15 | Morrison Briggs (President, Head of R&D) | Option Ex | 66,775 | 7.20 | 480,780 |
| 2022-09-15 | Podlesak Dennis | Sale | 66,840 | 24.20 | 1,617,394 |
| 2022-09-15 | Podlesak Dennis | Option Ex | 66,840 | 6.32 | 422,428 |
| 2022-09-14 | Morrison Briggs (President, Head of R&D) | Sale | 87,645 | 23.80 | 2,085,863 |
| 2022-09-14 | Morrison Briggs (President, Head of R&D) | Option Ex | 87,645 | 7.20 | 631,044 |
| 2022-08-24 | Ordentlich Peter (Chief Scientific Officer) | Sale | 25,000 | 25.04 | 625,900 |
| 2022-08-24 | Ordentlich Peter (Chief Scientific Officer) | Option Ex | 25,000 | 6.33 | 158,375 |
| 2022-07-25 | Metzger Michael A (Chief Executive Officer) | Sale | 31,602 | 21.05 | 665,380 |
| 2022-07-25 | Metzger Michael A (Chief Executive Officer) | Option Ex | 31,602 | 6.38 | 201,620 |
| 2022-07-07 | Metzger Michael A (Chief Executive Officer) | Sale | 100 | 21.00 | 2,100 |
| 2022-07-07 | Metzger Michael A (Chief Executive Officer) | Option Ex | 100 | 6.38 | 638 |
| 2022-07-06 | Metzger Michael A (Chief Executive Officer) | Sale | 15,009 | 21.07 | 316,314 |
| 2022-07-06 | Metzger Michael A (Chief Executive Officer) | Option Ex | 15,009 | 6.38 | 95,757 |
| 2022-07-01 | Morrison Briggs (President, Head of R&D) | Sale | 62,292 | 19.00 | 1,183,423 |
| 2022-07-01 | Morrison Briggs (President, Head of R&D) | Option Ex | 62,292 | 7.20 | 448,502 |
| 2022-04-04 | Morrison Briggs (President, Head of R&D) | Sale | 3,128 | 18.29 | 57,220 |
| 2022-04-04 | Morrison Briggs (President, Head of R&D) | Option Ex | 3,128 | 10.90 | 34,095 |
| 2022-04-01 | Morrison Briggs (President, Head of R&D) | Sale | 101,045 | 17.45 | 1,762,831 |
| 2022-04-01 | Morrison Briggs (President, Head of R&D) | Option Ex | 70,545 | 10.90 | 768,940 |
| 2022-02-01 | Nolte Alexander (Chief Accounting Officer) | Sale | 968 | 16.65 | 16,117 |
| 2022-02-01 | Ordentlich Peter (Chief Scientific Officer) | Sale | 1,412 | 16.65 | 23,509 |
| 2021-12-30 | Meyers Michael L. (SVP, Chief Medical Officer) | Option Ex | 5,900 | 8.77 | 51,743 |
| 2021-12-22 | Legault Pierre | Sale | 24,000 | 22.01 | 528,216 |
| 2021-12-22 | Legault Pierre | Option Ex | 24,000 | 7.88 | 189,120 |
| 2021-12-20 | Metzger Michael A (President and COO) | Sale | 61,000 | 20.29 | 1,237,568 |
| 2021-12-20 | Metzger Michael A (President and COO) | Option Ex | 61,000 | 7.58 | 462,075 |
| 2021-12-20 | Legault Pierre | Sale | 20,000 | 21.01 | 420,260 |
| 2021-12-20 | Legault Pierre | Option Ex | 20,000 | 7.08 | 141,600 |
| 2021-12-17 | Morrison Briggs (Chief Executive Officer) | Sale | 35,156 | 20.00 | 703,120 |
| 2021-12-17 | Morrison Briggs (Chief Executive Officer) | Option Ex | 35,156 | 10.90 | 383,200 |
| 2021-12-17 | Metzger Michael A (President and COO) | Sale | 1,676 | 19.02 | 31,877 |
| 2021-12-17 | Metzger Michael A (President and COO) | Option Ex | 1,676 | 6.38 | 10,692 |
| 2021-12-16 | Metzger Michael A (President and COO) | Sale | 22,715 | 19.08 | 433,402 |
| 2021-12-16 | Metzger Michael A (President and COO) | Option Ex | 22,715 | 6.38 | 144,921 |
| 2021-12-13 | Metzger Michael A (President and COO) | Sale | 36,609 | 19.05 | 697,511 |
| 2021-12-13 | Metzger Michael A (President and COO) | Option Ex | 36,609 | 6.79 | 248,575 |
| 2021-11-18 | Egros Fabrice | Sale | 14,030 | 18.03 | 252,988 |
| 2021-11-18 | Egros Fabrice | Option Ex | 14,030 | 8.40 | 117,922 |
| 2021-10-26 | Metzger Michael A (President and COO) | Sale | 16,296 | 19.20 | 312,818 |
| 2021-10-26 | Metzger Michael A (President and COO) | Option Ex | 16,296 | 7.20 | 117,331 |
| 2021-10-25 | Metzger Michael A (President and COO) | Sale | 44,704 | 19.13 | 855,321 |
| 2021-10-25 | Metzger Michael A (President and COO) | Option Ex | 44,704 | 7.20 | 321,868 |
| 2021-09-27 | Metzger Michael A (President and COO) | Sale | 24,437 | 19.51 | 476,839 |
| 2021-09-27 | Metzger Michael A (President and COO) | Option Ex | 24,437 | 7.20 | 175,946 |
| 2021-09-22 | Metzger Michael A (President and COO) | Sale | 300 | 19.02 | 5,706 |
| 2021-09-22 | Metzger Michael A (President and COO) | Option Ex | 300 | 7.20 | 2,160 |
| 2021-09-21 | Metzger Michael A (President and COO) | Sale | 4,808 | 19.16 | 92,106 |
| 2021-09-21 | Metzger Michael A (President and COO) | Option Ex | 4,808 | 7.20 | 34,617 |
| 2021-09-20 | Morrison Briggs (Chief Executive Officer) | Sale | 50 | 20.00 | 1,000 |
| 2021-09-20 | Morrison Briggs (Chief Executive Officer) | Option Ex | 50 | 7.20 | 360 |
| 2021-09-20 | Metzger Michael A (President and COO) | Sale | 31,455 | 19.23 | 605,036 |
| 2021-09-20 | Metzger Michael A (President and COO) | Option Ex | 31,455 | 7.20 | 226,476 |
| 2021-09-17 | Morrison Briggs (Chief Executive Officer) | Sale | 70,262 | 20.07 | 1,410,017 |
| 2021-09-17 | Morrison Briggs (Chief Executive Officer) | Option Ex | 70,262 | 7.20 | 505,886 |
| 2021-09-14 | Metzger Michael A (President and COO) | Sale | 44,349 | 19.15 | 849,416 |
| 2021-09-14 | Metzger Michael A (President and COO) | Option Ex | 44,349 | 7.20 | 319,312 |
| 2021-09-13 | Metzger Michael A (President and COO) | Sale | 16,651 | 19.02 | 316,635 |
| 2021-09-13 | Metzger Michael A (President and COO) | Option Ex | 16,651 | 7.20 | 119,887 |
| 2021-08-18 | Egros Fabrice | Sale | 15,635 | 15.76 | 246,329 |
| 2021-08-18 | Egros Fabrice | Option Ex | 15,635 | 7.88 | 123,203 |
| 2021-05-18 | Egros Fabrice | Sale | 13,609 | 18.65 | 253,780 |
| 2021-05-18 | Egros Fabrice | Option Ex | 13,609 | 7.54 | 102,611 |
| 2021-04-26 | Meyers Michael L. (SVP, Chief Medical Officer) | Buy | 500 | 15.46 | 7,730 |
| 2021-04-22 | Podlesak Dennis | Buy | 13,967 | 14.11 | 197,074 |
| 2021-03-01 | Egros Fabrice | Sale | 10,241 | 24.31 | 248,979 |
| 2021-03-01 | Egros Fabrice | Option Ex | 10,241 | 6.78 | 69,382 |
| 2021-02-08 | Morrison Briggs (Chief Executive Officer) | Sale | 35,156 | 20.55 | 722,420 |
| 2021-02-08 | Morrison Briggs (Chief Executive Officer) | Option Ex | 35,156 | 7.20 | 253,123 |
| 2021-02-01 | Metzger Michael A (President and COO) | Sale | 15,000 | 20.19 | 302,805 |
| 2021-02-01 | Metzger Michael A (President and COO) | Option Ex | 15,000 | 7.20 | 108,000 |
| 2020-12-01 | Metzger Michael A (President and COO) | Sale | 15,000 | 22.97 | 344,520 |
| 2020-12-01 | Metzger Michael A (President and COO) | Option Ex | 15,000 | 7.20 | 108,000 |
| 2020-11-23 | Ordentlich Peter (Chief Scientific Officer) | Sale | 29,972 | 23.27 | 697,418 |
| 2020-11-23 | Ordentlich Peter (Chief Scientific Officer) | Option Ex | 29,972 | 3.08 | 92,313 |
| 2020-11-10 | Morrison Briggs (Chief Executive Officer) | Sale | 17,466 | 20.06 | 350,315 |
| 2020-11-10 | Morrison Briggs (Chief Executive Officer) | Option Ex | 17,466 | 7.20 | 125,755 |
| 2020-11-09 | Morrison Briggs (Chief Executive Officer) | Sale | 62,938 | 20.04 | 1,261,277 |
| 2020-11-09 | Morrison Briggs (Chief Executive Officer) | Option Ex | 62,938 | 7.20 | 453,153 |
| 2020-11-04 | Metzger Michael A (President and COO) | Sale | 100,000 | 20.31 | 2,031,400 |
| 2020-11-04 | Metzger Michael A (President and COO) | Option Ex | 100,000 | 7.20 | 720,000 |
| 2020-02-04 | Morrison Briggs (Chief Executive Officer) | Buy | 12,500 | 8.00 | 100,000 |
| 2019-10-10 | Morrison Briggs (Chief Executive Officer) | Buy | 11,000 | 5.40 | 59,400 |
| 2019-05-13 | Morrison Briggs (Chief Executive Officer) | Buy | 7,200 | 7.29 | 52,516 |
| 2019-05-09 | Morrison Briggs (Chief Executive Officer) | Buy | 13,200 | 7.55 | 99,726 |
| 2019-03-21 | Meyers Michael L. (SVP, Chief Medical Officer) | Buy | 1,104 | 4.90 | 5,409 |
| 2018-10-30 | Meyers Michael L. (SVP, Chief Medical Officer) | Buy | 200 | 4.79 | 958 |
| 2018-04-03 | Ordentlich Peter (Chief Scientific Officer) | Sale | 7,500 | 15.00 | 112,500 |
| 2018-04-03 | Ordentlich Peter (Chief Scientific Officer) | Option Ex | 7,500 | 3.08 | 23,100 |
| 2017-05-17 | Ordentlich Peter (Chief Scientific Officer) | Sale | 5,000 | 15.00 | 75,000 |
| 2017-05-17 | Ordentlich Peter (Chief Scientific Officer) | Option Ex | 732 | 3.08 | 2,254 |
| 2016-03-08 | Royston Ivor (Director) | Buy | 150,000 | 12.00 | 1,800,000 |
Insider trading activities including stock purchases, stock sales, and option exercises of SNDX listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Syndax Pharmaceuticals Inc (symbol SNDX, CIK number 1395937) see the Securities and Exchange Commission (SEC) website.