David P. Rosenbaum
Insider
First SEC filing: June 19, 2014 · Latest: Feb. 20, 2020
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Nov. 20, 2024 | ARDX | S | 4,941 | $4.79 | $23,667 | 297,005 Direct | -1.64% | Disposed | -29.2% (price as of 2026-10-05) |
| Nov. 20, 2024 | ARDX | S | 2,243 | $4.79 | $10,744 | 151,373 Indirect | -1.46% | Disposed | -29.2% (price as of 2026-10-05) |
| Nov. 6, 2024 | ARDX | M | 27,171 | $2.32 | $63,037 | 180,787 Indirect | +17.69% | Acquired | 46.1% (price as of 2026-10-05) |
| Nov. 6, 2024 | ARDX | S | 27,171 | $6.10 | $165,743 | 153,616 Indirect | -15.03% | Disposed | -44.4% (price as of 2026-10-05) |
| Nov. 6, 2024 | ARDX | M | 27,171 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| Nov. 4, 2024 | ARDX | M | 27,172 | $2.32 | $63,039 | 180,788 Indirect | +17.69% | Acquired | 46.1% (price as of 2026-10-05) |
| Nov. 4, 2024 | ARDX | S | 27,172 | $5.95 | $161,673 | 153,616 Indirect | -15.03% | Disposed | -43.0% (price as of 2026-10-05) |
| Nov. 4, 2024 | ARDX | M | 27,172 | $2.32 | $63,039 | 27,171 Indirect | -50.00% | Disposed | 46.1% (price as of 2026-10-05) |
| Sept. 27, 2024 | ARDX | S 10b5-1 | 49,564 | $6.92 | $342,983 | 301,946 Direct | -14.10% | Disposed | -51.0% (price as of 2026-10-05) |
| Sept. 13, 2024 | ARDX | S | 5,312 | $6.26 | $33,253 | 153,616 Indirect | -3.34% | Disposed | -45.8% (price as of 2026-10-05) |
| Aug. 20, 2024 | ARDX | S | 4,969 | $5.86 | $29,118 | 351,510 Direct | -1.39% | Disposed | -42.2% (price as of 2026-10-05) |
| Aug. 20, 2024 | ARDX | S | 2,250 | $5.86 | $13,185 | 156,252 Indirect | -1.42% | Disposed | -42.2% (price as of 2026-10-05) |
| Aug. 20, 2024 | ARDX | M | 20,507 | $0.99 | $20,302 | 179,009 Indirect | +12.94% | Acquired | 242.4% (price as of 2026-10-05) |
| Aug. 20, 2024 | ARDX | S 10b5-1 | 20,507 | $6.00 | $123,042 | 158,502 Indirect | -11.46% | Disposed | -43.5% (price as of 2026-10-05) |
| Aug. 20, 2024 | ARDX | M | 20,507 | · | · | 49,806 Indirect | -29.17% | Disposed | (price as of 2026-10-05) |
| Aug. 16, 2024 | ARDX | S 10b5-1 | 20,000 | $5.94 | $118,800 | 356,479 Direct | -5.31% | Disposed | -42.9% (price as of 2026-10-05) |
| June 3, 2024 | ARDX | S | 17,872 | $7.00 | $125,104 | 158,502 Indirect | -10.13% | Disposed | -51.6% (price as of 2026-10-05) |
| May 21, 2024 | ARDX | S | 4,855 | $7.81 | $37,918 | 376,479 Direct | -1.27% | Disposed | -56.6% (price as of 2026-10-05) |
| May 21, 2024 | ARDX | S | 2,198 | $7.81 | $17,166 | 176,374 Indirect | -1.23% | Disposed | -56.6% (price as of 2026-10-05) |
| Feb. 26, 2024 | ARDX | S | 5,183 | $9.20 | $47,684 | 175,936 Indirect | -2.86% | Disposed | -63.2% (price as of 2026-10-05) |
| Feb. 20, 2024 | ARDX | S | 5,017 | $8.75 | $43,899 | 378,985 Direct | -1.31% | Disposed | -61.3% (price as of 2026-10-05) |
| Feb. 20, 2024 | ARDX | S | 2,294 | $8.75 | $20,072 | 181,119 Indirect | -1.25% | Disposed | -61.3% (price as of 2026-10-05) |
| Feb. 8, 2024 | ARDX | S 10b5-1 | 15,344 | $9.18 | $140,858 | 384,002 Direct | -3.84% | Disposed | -63.1% (price as of 2026-10-05) |
| Jan. 16, 2024 | ARDX | A | 112,750 | · | · | 399,346 Direct | +39.34% | Acquired | (price as of 2026-10-05) |
| Jan. 16, 2024 | ARDX | A | 70,120 | · | · | 183,413 Indirect | +61.89% | Acquired | (price as of 2026-10-05) |
| Jan. 16, 2024 | ARDX | A | 145,000 | · | · | 145,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 16, 2024 | ARDX | A | 99,000 | · | · | 99,000 Indirect | · | Acquired | (price as of 2026-10-05) |
| Jan. 8, 2024 | ARDX | S 10b5-1 | 30,000 | $6.64 | $199,200 | 286,596 Direct | -9.48% | Disposed | -48.9% (price as of 2026-10-05) |
| Dec. 18, 2023 | ARDX | S 10b5-1 | 5,675 | $6.07 | $34,447 | 316,596 Direct | -1.76% | Disposed | -44.2% (price as of 2026-10-05) |
| Dec. 14, 2023 | ARDX | S 10b5-1 | 7,000 | $5.55 | $38,850 | 322,271 Direct | -2.13% | Disposed | -38.9% (price as of 2026-10-05) |
| Dec. 8, 2023 | ARDX | S 10b5-1 | 20,000 | $5.27 | $105,400 | 329,271 Direct | -5.73% | Disposed | -35.7% (price as of 2026-10-05) |
| Dec. 5, 2023 | ARDX | S 10b5-1 | 10,272 | $5.00 | $51,360 | 349,271 Direct | -2.86% | Disposed | -32.2% (price as of 2026-10-05) |
| Nov. 30, 2023 | ARDX | S 10b5-1 | 3,000 | $4.50 | $13,500 | 359,543 Direct | -0.83% | Disposed | -24.7% (price as of 2026-10-05) |
| Nov. 20, 2023 | ARDX | S | 2,835 | $4.36 | $12,361 | 362,543 Direct | -0.78% | Disposed | -22.2% (price as of 2026-10-05) |
| Nov. 20, 2023 | ARDX | S | 932 | $4.36 | $4,064 | 113,293 Indirect | -0.82% | Disposed | -22.2% (price as of 2026-10-05) |
| Oct. 10, 2023 | ARDX | S 10b5-1 | 1,644 | $4.00 | $6,576 | 365,378 Direct | -0.45% | Disposed | -15.2% (price as of 2026-10-05) |
| Sept. 8, 2023 | ARDX | S 10b5-1 | 2,897 | $4.55 | $13,181 | 367,022 Direct | -0.78% | Disposed | -25.5% (price as of 2026-10-05) |
| Aug. 21, 2023 | ARDX | S | 2,846 | $3.55 | $10,103 | 369,919 Direct | -0.76% | Disposed | -4.5% (price as of 2026-10-05) |
| Aug. 21, 2023 | ARDX | S | 937 | $3.55 | $3,326 | 111,225 Indirect | -0.84% | Disposed | -4.5% (price as of 2026-10-05) |
| May 23, 2023 | ARDX | S | 934 | $3.65 | $3,409 | 112,162 Indirect | -0.83% | Disposed | -7.1% (price as of 2026-10-05) |
| May 23, 2023 | ARDX | S | 2,835 | $3.65 | $10,348 | 372,765 Direct | -0.75% | Disposed | -7.1% (price as of 2026-10-05) |
| March 29, 2023 | ARDX | S | 3,000 | $4.63 | $13,890 | 113,096 Indirect | -2.58% | Disposed | -26.8% (price as of 2026-10-05) |
| Feb. 21, 2023 | ARDX | S | 3,394 | $3.00 | $10,182 | 375,600 Direct | -0.90% | Disposed | 13.0% (price as of 2026-10-05) |
| Feb. 21, 2023 | ARDX | S | 1,114 | $3.00 | $3,342 | 113,096 Indirect | -0.98% | Disposed | 13.0% (price as of 2026-10-05) |
| Jan. 5, 2023 | ARDX | A | 78,000 | · | · | 378,994 Direct | +25.91% | Acquired | (price as of 2026-10-05) |
| Jan. 5, 2023 | ARDX | A | 25,325 | · | · | 114,210 Indirect | +28.49% | Acquired | (price as of 2026-10-05) |
| Jan. 5, 2023 | ARDX | A | 351,000 | · | · | 351,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 5, 2023 | ARDX | A | 116,250 | · | · | 116,250 Indirect | · | Acquired | (price as of 2026-10-05) |
| Nov. 22, 2022 | ARDX | S | 26 | $1.94 | $50 | 302,432 Direct | -0.01% | Disposed | 74.7% (price as of 2026-10-05) |
| Nov. 22, 2022 | ARDX | S | 33 | $1.95 | $64 | 302,399 Direct | -0.01% | Disposed | 73.8% (price as of 2026-10-05) |
| Nov. 22, 2022 | ARDX | S | 1,405 | $1.95 | $2,740 | 300,994 Direct | -0.46% | Disposed | 73.8% (price as of 2026-10-05) |
| Nov. 22, 2022 | ARDX | S | 11 | $1.94 | $21 | 89,358 Indirect | -0.01% | Disposed | 74.7% (price as of 2026-10-05) |
| Nov. 22, 2022 | ARDX | S | 2 | $1.95 | $4 | 89,356 Indirect | 0.00% | Disposed | 73.8% (price as of 2026-10-05) |
| Nov. 22, 2022 | ARDX | S | 471 | $1.95 | $918 | 88,885 Indirect | -0.53% | Disposed | 73.8% (price as of 2026-10-05) |
| Sept. 1, 2022 | ARDX | S | 3,000 | $0.92 | $2,760 | 89,369 Indirect | -3.25% | Disposed | 268.5% (price as of 2026-10-05) |
| Aug. 31, 2022 | ARDX | P | 3,000 | $0.62 | $1,860 | 92,369 Indirect | +3.36% | Acquired | 446.8% (price as of 2026-10-05) |
| Aug. 22, 2022 | ARDX | S | 1,441 | $0.98 | $1,412 | 302,475 Direct | -0.47% | Disposed | 245.9% (price as of 2026-10-05) |
| Aug. 22, 2022 | ARDX | S | 17 | $0.98 | $17 | 302,458 Direct | -0.01% | Disposed | 245.9% (price as of 2026-10-05) |
| Aug. 22, 2022 | ARDX | S | 496 | $0.98 | $486 | 89,370 Indirect | -0.55% | Disposed | 245.9% (price as of 2026-10-05) |
| Aug. 22, 2022 | ARDX | S | 1 | $0.98 | $1 | 89,369 Indirect | 0.00% | Disposed | 245.9% (price as of 2026-10-05) |
| June 6, 2022 | ARDX | S | 43,093 | $0.65 | $28,010 | 304,827 Direct | -12.39% | Disposed | 421.5% (price as of 2026-10-05) |
| June 6, 2022 | ARDX | S | 911 | $0.64 | $583 | 303,916 Direct | -0.30% | Disposed | 429.7% (price as of 2026-10-05) |
| June 6, 2022 | ARDX | S | 17,270 | $0.65 | $11,226 | 90,232 Indirect | -16.06% | Disposed | 421.5% (price as of 2026-10-05) |
| June 6, 2022 | ARDX | S | 366 | $0.64 | $234 | 89,866 Indirect | -0.41% | Disposed | 429.7% (price as of 2026-10-05) |
| May 20, 2022 | ARDX | S | 1,489 | $0.67 | $998 | 347,920 Direct | -0.43% | Disposed | 406.0% (price as of 2026-10-05) |
| May 20, 2022 | ARDX | S | 524 | $0.67 | $351 | 107,502 Indirect | -0.49% | Disposed | 406.0% (price as of 2026-10-05) |
| Feb. 22, 2022 | ARDX | S | 1,752 | $0.67 | $1,174 | 349,409 Direct | -0.50% | Disposed | 406.0% (price as of 2026-10-05) |
| Feb. 22, 2022 | ARDX | S | 601 | $0.67 | $403 | 105,026 Indirect | -0.57% | Disposed | 406.0% (price as of 2026-10-05) |
| Jan. 6, 2022 | ARDX | A | 40,000 | · | · | 351,161 Direct | +12.86% | Acquired | (price as of 2026-10-05) |
| Jan. 6, 2022 | ARDX | A | 15,000 | · | · | 105,627 Indirect | +16.55% | Acquired | (price as of 2026-10-05) |
| Jan. 6, 2022 | ARDX | A | 190,000 | · | · | 190,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 6, 2022 | ARDX | A | 70,313 | · | · | 70,313 Indirect | · | Acquired | (price as of 2026-10-05) |
| Nov. 22, 2021 | ARDX | S | 643 | $0.99 | $637 | 311,161 Direct | -0.21% | Disposed | 242.4% (price as of 2026-10-05) |
| Nov. 22, 2021 | ARDX | S | 184 | $0.99 | $182 | 90,627 Indirect | -0.20% | Disposed | 242.4% (price as of 2026-10-05) |
| Oct. 8, 2021 | ARDX | A | 150,000 | · | · | 311,804 Direct | +92.70% | Acquired | (price as of 2026-10-05) |
| Oct. 8, 2021 | ARDX | A | 60,000 | · | · | 90,811 Indirect | +194.74% | Acquired | (price as of 2026-10-05) |
| Aug. 20, 2021 | ARDX | S | 631 | $1.32 | $833 | 158,804 Direct | -0.40% | Disposed | 156.8% (price as of 2026-10-05) |
| Aug. 20, 2021 | ARDX | S | 176 | $1.32 | $232 | 26,574 Indirect | -0.66% | Disposed | 156.8% (price as of 2026-10-05) |
| May 28, 2021 | ARDX | S | 3,062 | $7.22 | $22,108 | 26,750 Indirect | -10.27% | Disposed | -53.0% (price as of 2026-10-05) |
| May 20, 2021 | ARDX | S | 612 | $7.09 | $4,339 | 159,435 Direct | -0.38% | Disposed | -52.2% (price as of 2026-10-05) |
| May 20, 2021 | ARDX | S | 157 | $7.09 | $1,113 | 29,812 Indirect | -0.52% | Disposed | -52.2% (price as of 2026-10-05) |
| April 6, 2021 | ARDX | S 10b5-1 | 5,000 | $8.00 | $40,000 | 160,047 Direct | -3.03% | Disposed | -57.6% (price as of 2026-10-05) |
| Feb. 22, 2021 | ARDX | S | 612 | $6.88 | $4,211 | 165,047 Direct | -0.37% | Disposed | -50.7% (price as of 2026-10-05) |
| Feb. 22, 2021 | ARDX | S | 193 | $6.88 | $1,328 | 29,969 Indirect | -0.64% | Disposed | -50.7% (price as of 2026-10-05) |
| Jan. 5, 2021 | ARDX | A | 32,612 | · | · | 165,659 Direct | +24.51% | Acquired | (price as of 2026-10-05) |
| Jan. 5, 2021 | ARDX | A | 8,500 | · | · | 30,162 Indirect | +39.24% | Acquired | (price as of 2026-10-05) |
| Jan. 5, 2021 | ARDX | A | 146,755 | · | · | 146,755 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 5, 2021 | ARDX | A | 37,500 | · | · | 37,500 Indirect | · | Acquired | (price as of 2026-10-05) |
| Sept. 15, 2020 | ARDX | S | 34,656 | $5.52 | $191,301 | 133,047 Direct | -20.67% | Disposed | -38.6% (price as of 2026-10-05) |
| Sept. 15, 2020 | ARDX | S | 3,470 | $5.51 | $19,120 | 21,662 Indirect | -13.81% | Disposed | -38.5% (price as of 2026-10-05) |
| Jan. 21, 2020 | ARDX | A | 47,500 | · | · | 47,500 Indirect | · | Acquired | (price as of 2026-10-05) |
| Jan. 9, 2020 | ARDX | A | 139,365 | · | · | 139,365 Direct | · | Acquired | (price as of 2026-10-05) |
| June 4, 2019 | ARDX | S | 2,856 | $2.54 | $7,254 | 160,171 Direct | -1.75% | Disposed | 33.5% (price as of 2026-10-05) |
| Jan. 17, 2019 | ARDX | A | 120,000 | · | · | 120,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 17, 2019 | ARDX | A | 54,343 | · | · | 54,343 Indirect | · | Acquired | (price as of 2026-10-05) |
| Jan. 2, 2019 | ARDX | S | 5,585 | $1.70 | $9,494 | 160,027 Direct | -3.37% | Disposed | 99.4% (price as of 2026-10-05) |
| Jan. 2, 2019 | ARDX | S | 801 | $1.70 | $1,362 | 18,029 Indirect | -4.25% | Disposed | 99.4% (price as of 2026-10-05) |
| Nov. 13, 2018 | ARDX | S | 5,570 | $2.84 | $15,819 | 165,612 Direct | -3.25% | Disposed | 19.4% (price as of 2026-10-05) |
| July 26, 2018 | ARDX | A | 8,220 | · | · | 8,220 Indirect | · | Acquired | (price as of 2026-10-05) |
| July 26, 2018 | ARDX | A | 54,730 | · | · | 54,730 Direct | · | Acquired | (price as of 2026-10-05) |
Showing latest 100 of 124 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 |
|---|---|---|---|---|---|---|---|
| Nov. 6, 2024 | ARDX | Stock Option (Right to Buy) | Common Stock | $2.32 | Jan. 17, 2029 | 27,171 | Disposed |
| Nov. 4, 2024 | ARDX | Stock Option (Right to Buy) | Common Stock | $2.32 | Jan. 17, 2029 | 27,172 | Disposed |
| Aug. 20, 2024 | ARDX | Stock Option (Right to Buy) | Common Stock | $0.99 | Jan. 6, 2032 | 20,507 | Disposed |
| Jan. 16, 2024 | ARDX | Stock Option (Right to Buy) | Common Stock | $8.78 | Jan. 16, 2034 | 145,000 | Acquired |
| Jan. 16, 2024 | ARDX | Stock Option (Right to Buy) | Common Stock | $8.78 | Jan. 16, 2034 | 99,000 | Acquired |
| Jan. 5, 2023 | ARDX | Stock Option (Right to Buy) | Common Stock | $2.73 | Jan. 5, 2033 | 351,000 | Acquired |
| Jan. 5, 2023 | ARDX | Stock Option (Right to Buy) | Common Stock | $2.73 | Jan. 5, 2033 | 116,250 | Acquired |
| Jan. 6, 2022 | ARDX | Stock Option (Right to Buy) | Common Stock | $0.99 | Jan. 6, 2032 | 190,000 | Acquired |
| Jan. 6, 2022 | ARDX | Stock Option (Right to Buy) | Common Stock | $0.99 | Jan. 6, 2032 | 70,313 | Acquired |
| Jan. 5, 2021 | ARDX | Stock Option (Right to Buy) | Common Stock | $6.35 | Jan. 5, 2031 | 146,755 | Acquired |
| Jan. 5, 2021 | ARDX | Stock Option (Right to Buy) | Common Stock | $6.35 | Jan. 5, 2031 | 37,500 | Acquired |
| Jan. 21, 2020 | ARDX | Stock Option (Right to Buy) | Common Stock | $7.17 | Jan. 21, 2030 | 47,500 | Acquired |
| Jan. 9, 2020 | ARDX | Stock Option | Common Stock | $7.60 | Jan. 9, 2030 | 139,365 | Acquired |
| Jan. 17, 2019 | ARDX | Stock Option | Common Stock | $2.32 | Jan. 17, 2029 | 120,000 | Acquired |
| Jan. 17, 2019 | ARDX | Stock Option | Common Stock | $2.32 | Jan. 17, 2029 | 54,343 | Acquired |
| July 26, 2018 | ARDX | Stock Option (Right to Buy) | Common Stock | $4.30 | July 26, 2028 | 8,220 | Acquired |
| July 26, 2018 | ARDX | Stock Option (Right to Buy) | Common Stock | $4.30 | July 26, 2028 | 54,730 | Acquired |
| Jan. 16, 2018 | ARDX | Stock Option (Right to Buy) | Common Stock | $7.10 | Jan. 16, 2028 | 16,440 | Acquired |
| Jan. 16, 2018 | ARDX | Stock Option (Right to Buy) | Common Stock | $7.10 | Jan. 16, 2028 | 117,104 | Acquired |
| Aug. 9, 2017 | ARDX | Stock Option (Right to Buy) | Common Stock | $4.70 | Aug. 9, 2027 | 26,512 | Acquired |
| Jan. 19, 2017 | ARDX | Stock Option (Right to Buy) | Common Stock | $13.90 | Jan. 19, 2027 | 106,047 | Acquired |
| Jan. 15, 2016 | ARDX | Stock Option (Right to Buy) | Common Stock | $10.55 | Jan. 15, 2026 | 90,377 | Acquired |
| Jan. 6, 2015 | ARDX | Stock Option (Right to Buy) | Common Stock | $23.02 | Jan. 6, 2025 | 12,620 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2021 | $461,000 | $92,200 | $394,586 | $590,777 | $92,200 | · | · | $1,630,763 |
| 2019 | $428,250 | · | · | · | $189,000 | · | · | $812,658 |
| 2018 | $414,000 | · | · | · | $107,640 | · | · | $1,711,796 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.