Dirk Kersten
CIK 1823682 · View on SEC EDGAR ↗
Insider
First SEC filing: Sept. 16, 2020 · Latest: June 9, 2026
On this page
Insider at
Insider transactions
0 buys (P)
19 sells (S)
Net:
$-38,570,974
+ 4 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
4 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| July 27, 2026 | DYN | S 10b5-1 | 5,388 | $26.04 | $140,304 | 3,586,796 Indirect | -0.15% | Disposed | 1.4% (price as of 2026-08-19) |
| July 27, 2026 | DYN | S 10b5-1 | 256,072 | $25.50 | $6,529,836 | 3,592,184 Indirect | -6.65% | Disposed | 3.6% (price as of 2026-08-19) |
| June 23, 2026 | DYN | S 10b5-1 | 1,657 | $21.47 | $35,576 | 3,848,256 Indirect | -0.04% | Disposed | 23.0% (price as of 2026-08-19) |
| June 23, 2026 | DYN | S 10b5-1 | 71,629 | $21.04 | $1,507,074 | 3,849,913 Indirect | -1.83% | Disposed | 25.5% (price as of 2026-08-19) |
| June 22, 2026 | DYN | S 10b5-1 | 190,676 | $20.57 | $3,922,205 | 3,921,542 Indirect | -4.64% | Disposed | 28.4% (price as of 2026-08-19) |
| June 18, 2026 | DYN | S 10b5-1 | 46,901 | $20.07 | $941,303 | 4,112,218 Indirect | -1.13% | Disposed | 31.6% (price as of 2026-08-19) |
| June 17, 2026 | DYN | S 10b5-1 | 37,454 | $20.14 | $754,324 | 4,159,119 Indirect | -0.89% | Disposed | 31.1% (price as of 2026-08-19) |
| April 22, 2026 | DYN | S 10b5-1 | 2,652 | $20.00 | $53,040 | 4,196,573 Indirect | -0.06% | Disposed | 32.1% (price as of 2026-08-19) |
| April 21, 2026 | DYN | S 10b5-1 | 8,300 | $20.01 | $166,083 | 4,199,225 Indirect | -0.20% | Disposed | 32.0% (price as of 2026-08-19) |
| April 20, 2026 | DYN | S 10b5-1 | 125,274 | $20.07 | $2,514,249 | 4,207,525 Indirect | -2.89% | Disposed | 31.6% (price as of 2026-08-19) |
| April 17, 2026 | DYN | S 10b5-1 | 211,974 | $20.29 | $4,300,952 | 4,332,799 Indirect | -4.66% | Disposed | 30.2% (price as of 2026-08-19) |
| April 16, 2026 | DYN | S 10b5-1 | 6,657 | $20.06 | $133,539 | 4,544,773 Indirect | -0.15% | Disposed | 31.7% (price as of 2026-08-19) |
| April 16, 2026 | DYN | S 10b5-1 | 11,116 | $21.10 | $234,548 | 4,551,430 Indirect | -0.24% | Disposed | 25.2% (price as of 2026-08-19) |
| April 15, 2026 | DYN | S 10b5-1 | 81,840 | $20.27 | $1,658,897 | 4,562,546 Indirect | -1.76% | Disposed | 30.3% (price as of 2026-08-19) |
| March 11, 2026 | DYN | S 10b5-1 | 129,672 | $19.52 | $2,531,197 | 4,644,386 Indirect | -2.72% | Disposed | 35.3% (price as of 2026-08-19) |
| March 10, 2026 | DYN | S 10b5-1 | 281,858 | $19.80 | $5,580,788 | 4,774,058 Indirect | -5.57% | Disposed | 33.4% (price as of 2026-08-19) |
| March 10, 2026 | DYN | S 10b5-1 | 219,758 | $19.32 | $4,245,725 | 5,055,916 Indirect | -4.17% | Disposed | 36.7% (price as of 2026-08-19) |
| March 10, 2026 | DYN | S 10b5-1 | 9,482 | $18.21 | $172,667 | 5,275,674 Indirect | -0.18% | Disposed | 45.0% (price as of 2026-08-19) |
| March 9, 2026 | DYN | S 10b5-1 | 177,690 | $17.72 | $3,148,667 | 5,285,156 Indirect | -3.25% | Disposed | 49.0% (price as of 2026-08-19) |
| Dec. 9, 2024 | DYN | S | 34,437 | $29.18 | $1,004,872 | 5,400,545 Indirect | -0.63% | Disposed | -9.5% (price as of 2026-08-19) |
| Dec. 6, 2024 | DYN | S | 101,675 | $29.34 | $2,983,144 | 5,434,982 Indirect | -1.84% | Disposed | -10.0% (price as of 2026-08-19) |
| Dec. 5, 2024 | DYN | S | 3,806 | $29.05 | $110,564 | 5,536,657 Indirect | -0.07% | Disposed | -9.1% (price as of 2026-08-19) |
| Dec. 4, 2024 | DYN | S | 135,039 | $29.39 | $3,968,796 | 5,540,463 Indirect | -2.38% | Disposed | -10.1% (price as of 2026-08-19) |
| Dec. 3, 2024 | DYN | S | 29,732 | $29.05 | $863,715 | 5,675,502 Indirect | -0.52% | Disposed | -9.1% (price as of 2026-08-19) |
| Dec. 2, 2024 | DYN | S | 1,228 | $30.37 | $37,294 | 5,705,234 Indirect | -0.02% | Disposed | -13.0% (price as of 2026-08-19) |
| Dec. 2, 2024 | DYN | S | 79,973 | $29.66 | $2,371,999 | 5,706,462 Indirect | -1.38% | Disposed | -11.0% (price as of 2026-08-19) |
| Nov. 14, 2024 | DYN | S 10b5-1 | 8,929 | $32.82 | $293,050 | 5,786,435 Indirect | -0.15% | Disposed | -19.5% (price as of 2026-08-19) |
| Nov. 13, 2024 | DYN | S 10b5-1 | 10,803 | $35.24 | $380,698 | 62,301 Indirect | -14.78% | Disposed | -25.1% (price as of 2026-08-19) |
| Oct. 21, 2024 | DYN | S 10b5-1 | 121 | $35.06 | $4,242 | 73,104 Indirect | -0.17% | Disposed | -24.7% (price as of 2026-08-19) |
| Oct. 18, 2024 | DYN | S 10b5-1 | 13,414 | $35.16 | $471,636 | 73,225 Indirect | -15.48% | Disposed | -24.9% (price as of 2026-08-19) |
| Oct. 17, 2024 | DYN | S 10b5-1 | 13,013 | $35.17 | $457,667 | 86,639 Indirect | -13.06% | Disposed | -24.9% (price as of 2026-08-19) |
| Oct. 16, 2024 | DYN | S 10b5-1 | 23,671 | $35.35 | $836,770 | 99,652 Indirect | -19.19% | Disposed | -25.3% (price as of 2026-08-19) |
| Oct. 3, 2024 | DYN | S 10b5-1 | 5,441 | $35.13 | $191,142 | 123,323 Indirect | -4.23% | Disposed | -24.8% (price as of 2026-08-19) |
| Oct. 2, 2024 | DYN | S 10b5-1 | 21,518 | $35.38 | $761,307 | 128,764 Indirect | -14.32% | Disposed | -25.4% (price as of 2026-08-19) |
| Oct. 1, 2024 | DYN | S 10b5-1 | 8,423 | $35.16 | $296,153 | 150,282 Indirect | -5.31% | Disposed | -24.9% (price as of 2026-08-19) |
| Sept. 30, 2024 | DYN | S 10b5-1 | 1,935 | $36.02 | $69,699 | 158,705 Indirect | -1.20% | Disposed | -26.7% (price as of 2026-08-19) |
| Sept. 30, 2024 | DYN | S 10b5-1 | 29,007 | $35.47 | $1,028,878 | 160,640 Indirect | -15.30% | Disposed | -25.5% (price as of 2026-08-19) |
| Sept. 27, 2024 | DYN | S 10b5-1 | 32 | $35.00 | $1,120 | 189,647 Indirect | -0.02% | Disposed | -24.5% (price as of 2026-08-19) |
| Sept. 26, 2024 | DYN | S 10b5-1 | 1,260 | $35.29 | $44,465 | 189,679 Indirect | -0.66% | Disposed | -25.2% (price as of 2026-08-19) |
| Sept. 25, 2024 | DYN | S 10b5-1 | 2,357 | $35.06 | $82,636 | 190,939 Indirect | -1.22% | Disposed | -24.7% (price as of 2026-08-19) |
| Sept. 23, 2024 | DYN | S 10b5-1 | 4,610 | $36.33 | $167,481 | 193,296 Indirect | -2.33% | Disposed | -27.3% (price as of 2026-08-19) |
| Sept. 23, 2024 | DYN | S 10b5-1 | 36,221 | $35.19 | $1,274,617 | 197,906 Indirect | -15.47% | Disposed | -25.0% (price as of 2026-08-19) |
| Sept. 20, 2024 | DYN | S 10b5-1 | 471 | $37.01 | $17,432 | 234,127 Indirect | -0.20% | Disposed | -28.6% (price as of 2026-08-19) |
| Sept. 20, 2024 | DYN | S 10b5-1 | 78,940 | $36.45 | $2,877,363 | 234,598 Indirect | -25.18% | Disposed | -27.5% (price as of 2026-08-19) |
| Sept. 19, 2024 | DYN | S 10b5-1 | 50,972 | $36.41 | $1,855,891 | 313,538 Indirect | -13.98% | Disposed | -27.5% (price as of 2026-08-19) |
| Sept. 19, 2024 | DYN | S 10b5-1 | 27,767 | $35.74 | $992,393 | 364,510 Indirect | -7.08% | Disposed | -26.1% (price as of 2026-08-19) |
| Sept. 18, 2024 | DYN | S 10b5-1 | 1,554 | $35.03 | $54,437 | 392,277 Indirect | -0.39% | Disposed | -24.6% (price as of 2026-08-19) |
| Sept. 17, 2024 | DYN | S 10b5-1 | 3,272 | $35.13 | $114,945 | 393,831 Indirect | -0.82% | Disposed | -24.8% (price as of 2026-08-19) |
| Sept. 16, 2024 | DYN | S 10b5-1 | 1,320 | $35.04 | $46,253 | 397,103 Indirect | -0.33% | Disposed | -24.6% (price as of 2026-08-19) |
| Sept. 5, 2024 | DYN | S 10b5-1 | 1,577 | $35.03 | $55,242 | 398,423 Indirect | -0.39% | Disposed | -24.6% (price as of 2026-08-19) |
| Aug. 30, 2024 | DYN | S 10b5-1 | 25,096 | $45.49 | $1,141,617 | 406,204 Indirect | -5.82% | Disposed | -41.9% (price as of 2026-08-19) |
| Aug. 30, 2024 | DYN | S 10b5-1 | 6,204 | $46.01 | $285,446 | 400,000 Indirect | -1.53% | Disposed | -42.6% (price as of 2026-08-19) |
| Aug. 29, 2024 | DYN | S 10b5-1 | 10,768 | $45.81 | $493,282 | 431,300 Indirect | -2.44% | Disposed | -42.3% (price as of 2026-08-19) |
| Aug. 29, 2024 | DYN | S 10b5-1 | 45,640 | $45.19 | $2,062,472 | 442,068 Indirect | -9.36% | Disposed | -41.6% (price as of 2026-08-19) |
| Aug. 28, 2024 | DYN | S 10b5-1 | 61,467 | $44.94 | $2,762,327 | 487,708 Indirect | -11.19% | Disposed | -41.2% (price as of 2026-08-19) |
| Aug. 28, 2024 | DYN | S 10b5-1 | 16,386 | $44.41 | $727,702 | 549,175 Indirect | -2.90% | Disposed | -40.5% (price as of 2026-08-19) |
| Aug. 27, 2024 | DYN | S 10b5-1 | 65,403 | $44.28 | $2,896,045 | 565,561 Indirect | -10.37% | Disposed | -40.4% (price as of 2026-08-19) |
| Aug. 26, 2024 | DYN | S 10b5-1 | 77,963 | $45.23 | $3,526,266 | 642,498 Indirect | -10.82% | Disposed | -41.6% (price as of 2026-08-19) |
| Aug. 26, 2024 | DYN | S 10b5-1 | 11,534 | $45.79 | $528,142 | 630,964 Indirect | -1.80% | Disposed | -42.3% (price as of 2026-08-19) |
| Aug. 23, 2024 | DYN | S 10b5-1 | 64,133 | $46.37 | $2,973,847 | 720,461 Indirect | -8.17% | Disposed | -43.0% (price as of 2026-08-19) |
| Aug. 23, 2024 | DYN | S 10b5-1 | 20,955 | $45.82 | $960,158 | 784,594 Indirect | -2.60% | Disposed | -42.4% (price as of 2026-08-19) |
| Aug. 22, 2024 | DYN | S 10b5-1 | 413 | $46.97 | $19,399 | 805,549 Indirect | -0.05% | Disposed | -43.8% (price as of 2026-08-19) |
| Aug. 22, 2024 | DYN | S 10b5-1 | 94,908 | $45.82 | $4,348,685 | 805,962 Indirect | -10.54% | Disposed | -42.4% (price as of 2026-08-19) |
| Aug. 21, 2024 | DYN | S 10b5-1 | 71,245 | $47.01 | $3,349,227 | 900,870 Indirect | -7.33% | Disposed | -43.8% (price as of 2026-08-19) |
| Aug. 21, 2024 | DYN | S 10b5-1 | 64,518 | $46.52 | $3,001,377 | 972,115 Indirect | -6.22% | Disposed | -43.2% (price as of 2026-08-19) |
| Aug. 20, 2024 | DYN | S 10b5-1 | 8,326 | $47.30 | $393,820 | 1,036,633 Indirect | -0.80% | Disposed | -44.2% (price as of 2026-08-19) |
| Aug. 20, 2024 | DYN | S 10b5-1 | 35,457 | $46.94 | $1,664,352 | 1,044,959 Indirect | -3.28% | Disposed | -43.7% (price as of 2026-08-19) |
| Aug. 20, 2024 | DYN | S 10b5-1 | 43,057 | $45.68 | $1,966,844 | 1,080,416 Indirect | -3.83% | Disposed | -42.2% (price as of 2026-08-19) |
| Aug. 19, 2024 | DYN | S 10b5-1 | 5,760 | $46.59 | $268,358 | 1,123,473 Indirect | -0.51% | Disposed | -43.3% (price as of 2026-08-19) |
| Aug. 19, 2024 | DYN | S 10b5-1 | 89,824 | $46.01 | $4,132,802 | 1,129,233 Indirect | -7.37% | Disposed | -42.6% (price as of 2026-08-19) |
| Aug. 19, 2024 | DYN | S 10b5-1 | 30,448 | $45.10 | $1,373,205 | 1,219,057 Indirect | -2.44% | Disposed | -41.4% (price as of 2026-08-19) |
| Aug. 16, 2024 | DYN | S 10b5-1 | 3,072 | $46.19 | $141,896 | 1,249,505 Indirect | -0.25% | Disposed | -42.8% (price as of 2026-08-19) |
| Aug. 16, 2024 | DYN | S 10b5-1 | 85,086 | $45.35 | $3,858,650 | 1,252,577 Indirect | -6.36% | Disposed | -41.8% (price as of 2026-08-19) |
| Aug. 16, 2024 | DYN | S 10b5-1 | 34,485 | $44.52 | $1,535,272 | 1,337,663 Indirect | -2.51% | Disposed | -40.7% (price as of 2026-08-19) |
| Aug. 15, 2024 | DYN | S 10b5-1 | 49,601 | $45.67 | $2,265,278 | 1,372,148 Indirect | -3.49% | Disposed | -42.2% (price as of 2026-08-19) |
| Aug. 15, 2024 | DYN | S 10b5-1 | 131,290 | $45.25 | $5,940,872 | 1,421,749 Indirect | -8.45% | Disposed | -41.6% (price as of 2026-08-19) |
| Aug. 14, 2024 | DYN | S 10b5-1 | 100,650 | $43.67 | $4,395,386 | 1,553,039 Indirect | -6.09% | Disposed | -39.5% (price as of 2026-08-19) |
| Aug. 13, 2024 | DYN | S 10b5-1 | 21,428 | $43.57 | $933,618 | 1,653,689 Indirect | -1.28% | Disposed | -39.4% (price as of 2026-08-19) |
| Aug. 13, 2024 | DYN | S 10b5-1 | 88,179 | $42.78 | $3,772,298 | 1,675,117 Indirect | -5.00% | Disposed | -38.3% (price as of 2026-08-19) |
| Aug. 13, 2024 | DYN | S 10b5-1 | 24,378 | $42.08 | $1,025,826 | 1,763,296 Indirect | -1.36% | Disposed | -37.2% (price as of 2026-08-19) |
| Aug. 12, 2024 | DYN | S 10b5-1 | 52,076 | $43.42 | $2,261,140 | 1,787,674 Indirect | -2.83% | Disposed | -39.2% (price as of 2026-08-19) |
| Aug. 12, 2024 | DYN | S 10b5-1 | 26,416 | $42.74 | $1,129,020 | 1,839,750 Indirect | -1.42% | Disposed | -38.2% (price as of 2026-08-19) |
| Aug. 9, 2024 | DYN | S 10b5-1 | 1,160 | $44.04 | $51,086 | 1,866,166 Indirect | -0.06% | Disposed | -40.0% (price as of 2026-08-19) |
| Aug. 9, 2024 | DYN | S 10b5-1 | 40,268 | $43.44 | $1,749,242 | 1,867,326 Indirect | -2.11% | Disposed | -39.2% (price as of 2026-08-19) |
| Aug. 9, 2024 | DYN | S 10b5-1 | 50,736 | $42.55 | $2,158,817 | 1,907,594 Indirect | -2.59% | Disposed | -37.9% (price as of 2026-08-19) |
| Aug. 9, 2024 | DYN | S 10b5-1 | 1,160 | $44.04 | $51,086 | 6,232,959 Indirect | -0.02% | Disposed | -40.0% (price as of 2026-08-19) |
| Aug. 9, 2024 | DYN | S 10b5-1 | 40,268 | $43.44 | $1,749,242 | 6,234,119 Indirect | -0.64% | Disposed | -39.2% (price as of 2026-08-19) |
| Aug. 9, 2024 | DYN | S 10b5-1 | 50,736 | $42.55 | $2,158,817 | 6,274,387 Indirect | -0.80% | Disposed | -37.9% (price as of 2026-08-19) |
| Aug. 8, 2024 | DYN | S 10b5-1 | 68,936 | $42.87 | $2,955,286 | 1,958,330 Indirect | -3.40% | Disposed | -38.4% (price as of 2026-08-19) |
| Aug. 8, 2024 | DYN | S 10b5-1 | 16,357 | $42.97 | $702,860 | 2,027,266 Indirect | -0.80% | Disposed | -38.5% (price as of 2026-08-19) |
| Aug. 8, 2024 | DYN | S 10b5-1 | 6,377 | $40.74 | $259,799 | 2,043,623 Indirect | -0.31% | Disposed | -35.2% (price as of 2026-08-19) |
| Aug. 8, 2024 | DYN | S 10b5-1 | 68,936 | $42.87 | $2,955,286 | 6,325,123 Indirect | -1.08% | Disposed | -38.4% (price as of 2026-08-19) |
| Aug. 8, 2024 | DYN | S 10b5-1 | 16,357 | $42.97 | $702,860 | 6,394,059 Indirect | -0.26% | Disposed | -38.5% (price as of 2026-08-19) |
| Aug. 8, 2024 | DYN | S 10b5-1 | 6,377 | $40.74 | $259,799 | 6,410,416 Indirect | -0.10% | Disposed | -35.2% (price as of 2026-08-19) |
| Jan. 9, 2024 | DYN | P | 1,428,571 | $17.50 | $24,999,992 | 1,428,571 Indirect | — | Acquired | 50.9% (price as of 2026-08-19) |
| Jan. 9, 2024 | DYN | P | 285,714 | $17.50 | $4,999,995 | 6,416,793 Indirect | +4.66% | Acquired | 50.9% (price as of 2026-08-19) |
Showing latest 100 of 107 transactions
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| June 5, 2026 | DYN | Stock option (right to buy) | Common Stock (35,152) | $17.04 | June 4, 2036 | 35,152 | Acquired |
| May 30, 2025 | DYN | Stock option (right to buy) | Common Stock (35,000) | $11.96 | May 29, 2035 | 35,000 | Acquired |
| May 22, 2024 | DYN | Stock option (right to buy) | Common Stock (25,133) | $31.53 | May 21, 2034 | 25,133 | Acquired |
| May 24, 2023 | DYN | Stock Option (right to buy) | Common Stock (24,900) | $13.49 | May 23, 2033 | 24,900 | Acquired |
| June 3, 2022 | DYN | Stock Option (right to buy) | Common Stock (19,596) | $4.58 | June 2, 2032 | 19,596 | Acquired |
| May 26, 2021 | DYN | Stock Option (right to buy) | Common Stock (19,596) | $19.56 | May 25, 2031 | 19,596 | Acquired |
| Sept. 21, 2020 | DYN | Series B Preferred Stock | Common Stock (1,608,786) | — | — | 5,336,179 | Disposed |
| Sept. 21, 2020 | DYN | Series A Preferred Stock | Common Stock (4,522,293) | — | — | 15,000,000 | Disposed |
| Aug. 7, 2020 | DYN | Series B Preferred Stock | Common Stock (1,608,786) | — | — | 5,336,179 | Acquired |
| July 31, 2020 | DYN | Series A Preferred Stock | Common Stock (1,582,803) | — | — | 5,250,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.