Seth Lederman
Insider
First SEC filing: June 9, 2026 · Latest: June 9, 2026
Insider at
Insider transactions
4 buys (P)
0 sells (S)
Net: $372,980
Avg return of open purchases vs now: -32.3%
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 |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 27, 2026 | TNXP | P | 2,000 | $13.79 | $27,580 | 11,005 Indirect | +22.21% | Acquired | -35.4% (price as of 2026-10-02) |
| June 9, 2026 | TNXP | P | 5,000 | $11.79 | $58,950 | 9,005 Direct | +124.84% | Acquired | -24.4% (price as of 2026-10-02) |
| March 31, 2026 | TNXP | P | 5,000 | $12.62 | $63,100 | 20,001 Indirect | +33.33% | Acquired | -29.4% (price as of 2026-10-02) |
| March 18, 2026 | TNXP | P | 15,000 | $14.89 | $223,350 | 15,001 Indirect | +1500000.00% | Acquired | -40.2% (price as of 2026-10-02) |
| Feb. 24, 2026 | TNXP | A | 134,504 | · | · | 134,504 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 24, 2026 | TNXP | A | 134,503 | · | · | 134,503 Direct | · | Acquired | (price as of 2026-10-02) |
| May 15, 2025 | TNXP | P | 4,000 | $21.55 | $86,200 | 4,005 Direct | +80000.00% | Acquired | -58.7% (price as of 2026-10-02) |
| Feb. 25, 2025 | TNXP | A | 123,958 | · | · | 123,958 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 25, 2025 | TNXP | A | 123,958 | · | · | 123,958 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 5, 2025 | TNXP | J | 5 | $3.38 | $17 | 5 Direct | -50.00% | Disposed | 163.6% (price as of 2026-10-02) |
| Feb. 5, 2025 | TNXP | J | 0 | $3.30 | · | 1 Indirect | 0.00% | Disposed | 170.0% (price as of 2026-10-02) |
| Feb. 5, 2025 | TNXP | J | 1 | $0.15 | · | 0 Indirect | -100.00% | Disposed | 5840.0% (price as of 2026-10-02) |
| Feb. 27, 2024 | TNXP | A | 235,320 | · | · | 235,320 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 27, 2024 | TNXP | A | 1,903,680 | · | · | 1,903,680 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 27, 2024 | TNXP | A | 1,309,911 | · | · | 1,309,911 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 27, 2024 | TNXP | A | 235,320 | · | · | 235,320 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 27, 2024 | TNXP | A | 1,903,680 | · | · | 1,903,680 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 27, 2024 | TNXP | A | 1,309,911 | · | · | 1,309,911 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 23, 2023 | TNXP | A | 700,000 | · | · | 700,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 23, 2023 | TNXP | A | 700,000 | · | · | 700,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 29, 2022 | TNXP | P | 20,000 | $1.71 | $34,200 | 24,235 Indirect | +472.26% | Acquired | -100.0% (price as of 2026-10-02) |
| March 25, 2022 | TNXP | P | 100,000 | $0.24 | $24,000 | 112,177 Direct | +821.22% | Acquired | -100.0% (price as of 2026-10-02) |
| Feb. 15, 2022 | TNXP | A | 5,000,000 | · | · | 5,000,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2022 | TNXP | A | 5,000,000 | · | · | 5,000,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2022 | TNXP | A | 5,000,000 | · | · | 5,000,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2022 | TNXP | A | 5,000,000 | · | · | 5,000,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 28, 2021 | TNXP | P | 12,000 | $0.61 | $7,320 | 12,177 Direct | +6779.66% | Acquired | -100.0% (price as of 2026-10-02) |
| March 24, 2021 | TNXP | P | 16,733 | $1.32 | $22,088 | 135,000 Indirect | +14.15% | Acquired | -100.0% (price as of 2026-10-02) |
| Feb. 23, 2021 | TNXP | A | 3,000,000 | · | · | 3,000,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 23, 2021 | TNXP | A | 3,000,000 | · | · | 3,000,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 30, 2020 | TNXP | P | 35,000 | $0.68 | $23,800 | 118,267 Direct | +42.03% | Acquired | -100.0% (price as of 2026-10-02) |
| Aug. 13, 2020 | TNXP | P | 60,000 | $0.91 | $54,600 | 83,267 Indirect | +257.88% | Acquired | -100.0% (price as of 2026-10-02) |
| May 4, 2020 | TNXP | A | 2,000,000 | · | · | 2,000,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 4, 2020 | TNXP | A | 2,000,000 | · | · | 2,000,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 25, 2020 | TNXP | A | 120,000 | · | · | 120,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 25, 2020 | TNXP | A | 120,000 | · | · | 120,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 3, 2019 | TNXP | P | 20,000 | $1.16 | $23,200 | 23,267 Indirect | +612.18% | Acquired | -100.0% (price as of 2026-10-02) |
| May 6, 2019 | TNXP | A | 129,758 | · | · | 129,758 Direct | · | Acquired | (price as of 2026-10-02) |
| May 6, 2019 | TNXP | A | 129,757 | · | · | 129,757 Direct | · | Acquired | (price as of 2026-10-02) |
| March 29, 2019 | TNXP | P | 5,000 | $2.49 | $12,450 | 32,670 Indirect | +18.07% | Acquired | -100.0% (price as of 2026-10-02) |
| March 26, 2019 | TNXP | P | 25,000 | $2.38 | $59,500 | 27,670 Indirect | +936.33% | Acquired | -100.0% (price as of 2026-10-02) |
| Feb. 26, 2019 | TNXP | A | 23,265 | · | · | 23,265 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 26, 2019 | TNXP | A | 23,265 | · | · | 23,265 Direct | · | Acquired | (price as of 2026-10-02) |
| June 29, 2018 | TNXP | P | 500 | $4.64 | $2,320 | 17,666 Direct | +2.91% | Acquired | -100.0% (price as of 2026-10-02) |
| June 28, 2018 | TNXP | P | 500 | $4.58 | $2,290 | 17,166 Direct | +3.00% | Acquired | -100.0% (price as of 2026-10-02) |
| June 27, 2018 | TNXP | P | 500 | $4.55 | $2,275 | 16,666 Direct | +3.09% | Acquired | -100.0% (price as of 2026-10-02) |
| June 12, 2018 | TNXP | P | 1,000 | $4.37 | $4,370 | 16,166 Direct | +6.59% | Acquired | -100.0% (price as of 2026-10-02) |
| June 12, 2018 | TNXP | P | 2,000 | $4.37 | $8,740 | 20,463 Indirect | +10.83% | Acquired | -100.0% (price as of 2026-10-02) |
| May 25, 2018 | TNXP | P | 4,000 | $3.17 | $12,680 | 26,700 Indirect | +17.62% | Acquired | -100.0% (price as of 2026-10-02) |
| Feb. 13, 2018 | TNXP | A | 156,601 | · | · | 156,601 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 13, 2018 | TNXP | A | 156,601 | · | · | 156,601 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 26, 2017 | TNXP | P | 5,300 | $3.61 | $19,133 | 22,700 Indirect | +30.46% | Acquired | -100.0% (price as of 2026-10-02) |
| Aug. 17, 2017 | TNXP | P | 15,000 | $3.00 | $45,000 | 50,000 Indirect | +42.86% | Acquired | -100.0% (price as of 2026-10-02) |
| Aug. 16, 2017 | TNXP | P | 5,000 | $2.99 | $14,950 | 35,000 Indirect | +16.67% | Acquired | -100.0% (price as of 2026-10-02) |
| June 30, 2017 | TNXP | P | 5,000 | $4.33 | $21,650 | 30,000 Indirect | +20.00% | Acquired | -100.0% (price as of 2026-10-02) |
| June 26, 2017 | TNXP | P | 5,000 | $4.40 | $22,000 | 25,000 Indirect | +25.00% | Acquired | -100.0% (price as of 2026-10-02) |
| June 20, 2017 | TNXP | P | 20,000 | $4.22 | $84,400 | 20,000 Indirect | · | Acquired | -100.0% (price as of 2026-10-02) |
| March 1, 2017 | TNXP | A | 160,000 | · | · | 160,000 Direct | · | Acquired | (price as of 2026-10-02) |
| March 1, 2017 | TNXP | A | 160,000 | · | · | 160,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 21, 2016 | TNXP | P | 98,000 | $0.43 | $42,140 | 133,000 Indirect | +280.00% | Acquired | -100.0% (price as of 2026-10-02) |
| Oct. 31, 2016 | TNXP | P | 10,000 | · | · | 90,815 Direct | +12.37% | Acquired | (price as of 2026-10-02) |
| Oct. 31, 2016 | TNXP | P | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 22, 2016 | TNXP | P | 20,000 | $2.08 | $41,600 | 20,000 Indirect | · | Acquired | -100.0% (price as of 2026-10-02) |
| June 21, 2016 | TNXP | P | 25,000 | $2.00 | $50,000 | 31,000 Indirect | +416.67% | Acquired | -100.0% (price as of 2026-10-02) |
| March 23, 2016 | TNXP | P | 8,000 | $2.44 | $19,520 | 80,815 Direct | +10.99% | Acquired | -100.0% (price as of 2026-10-02) |
| Feb. 9, 2016 | TNXP | A | 110,000 | · | · | 110,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 9, 2016 | TNXP | A | 110,000 | · | · | 110,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 25, 2015 | TNXP | P | 6,000 | $6.50 | $39,000 | 71,074 Direct | +9.22% | Acquired | -100.0% (price as of 2026-10-02) |
| July 17, 2015 | TNXP | P | 6,000 | $7.50 | $45,000 | 6,000 Indirect | · | Acquired | -100.0% (price as of 2026-10-02) |
| March 17, 2015 | TNXP | P | 1,000 | $7.18 | $7,180 | 65,074 Direct | +1.56% | Acquired | -100.0% (price as of 2026-10-02) |
| March 16, 2015 | TNXP | P | 1,000 | $6.85 | $6,850 | 64,074 Direct | +1.59% | Acquired | -100.0% (price as of 2026-10-02) |
| March 13, 2015 | TNXP | P | 1,000 | $7.21 | $7,210 | 63,074 Direct | +1.61% | Acquired | -100.0% (price as of 2026-10-02) |
| March 12, 2015 | TNXP | P | 1,000 | $7.26 | $7,260 | 62,074 Direct | +1.64% | Acquired | -100.0% (price as of 2026-10-02) |
| March 11, 2015 | TNXP | P | 1,000 | $7.00 | $7,000 | 61,074 Direct | +1.66% | Acquired | -100.0% (price as of 2026-10-02) |
| March 10, 2015 | TNXP | P | 1,000 | $6.90 | $6,900 | 60,074 Direct | +1.69% | Acquired | -100.0% (price as of 2026-10-02) |
| March 9, 2015 | TNXP | P | 1,000 | $6.50 | $6,500 | 59,074 Direct | +1.72% | Acquired | -100.0% (price as of 2026-10-02) |
| March 6, 2015 | TNXP | P | 1,000 | $6.45 | $6,450 | 58,074 Direct | +1.75% | Acquired | -100.0% (price as of 2026-10-02) |
| March 5, 2015 | TNXP | P | 1,000 | $6.48 | $6,480 | 57,074 Direct | +1.78% | Acquired | -100.0% (price as of 2026-10-02) |
| March 4, 2015 | TNXP | P | 1,000 | $6.05 | $6,050 | 56,074 Direct | +1.82% | Acquired | -100.0% (price as of 2026-10-02) |
| Feb. 25, 2015 | TNXP | A | 7,143 | · | · | 7,143 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 25, 2015 | TNXP | A | 189,000 | · | · | 189,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 9, 2015 | TNXP | P | 5,000 | $5.85 | $29,250 | 55,074 Direct | +9.99% | Acquired | -100.0% (price as of 2026-10-02) |
| Oct. 29, 2014 | TNXP | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 17, 2014 | TNXP | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
| March 18, 2014 | TNXP | J | 25,000 | $12.15 | $303,750 | 29,167 Indirect | +599.95% | Acquired | -100.0% (price as of 2026-10-02) |
| March 18, 2014 | TNXP | J | 25,000 | $12.15 | $303,750 | 29,167 Indirect | +599.95% | Acquired | -100.0% (price as of 2026-10-02) |
| Feb. 11, 2014 | TNXP | A | 71,000 | · | · | 71,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 14, 2013 | TNXP | P | 11,765 | · | · | 11,765 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 14, 2013 | TNXP | P | 11,765 | · | · | 50,074 Direct | +30.71% | Acquired | (price as of 2026-10-02) |
| May 20, 2013 | TNXP | P | 400 | $7.75 | $3,100 | 38,309 Direct | +1.06% | Acquired | -100.0% (price as of 2026-10-02) |
| May 20, 2013 | TNXP | P | 600 | $7.00 | $4,200 | 37,909 Direct | +1.61% | Acquired | -100.0% (price as of 2026-10-02) |
| Feb. 12, 2013 | TNXP | A | 1,350,000 | · | · | 0 Direct | · | Acquired | (price as of 2026-10-02) |
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 |
|---|---|---|---|---|---|---|---|
| Feb. 24, 2026 | TNXP | Stock Option | Common Stock | $14.29 | Feb. 24, 2036 | 134,504 | Acquired |
| Feb. 24, 2026 | TNXP | Stock Option | Common Stock | $17.86 | Feb. 24, 2036 | 134,503 | Acquired |
| Feb. 25, 2025 | TNXP | Stock Option | Common Stock | $8.05 | Feb. 25, 2035 | 123,958 | Acquired |
| Feb. 25, 2025 | TNXP | Stock Option | Common Stock | $10.06 | Feb. 25, 2035 | 123,958 | Acquired |
| Feb. 27, 2024 | TNXP | Stock Option | Common Stock | $0.37 | Feb. 27, 2034 | 235,320 | Acquired |
| Feb. 27, 2024 | TNXP | Stock Option | Common Stock | $0.46 | Feb. 27, 2034 | 1,903,680 | Acquired |
| Feb. 27, 2024 | TNXP | Stock Option | Common Stock | · | Feb. 27, 2034 | 1,309,911 | Acquired |
| Feb. 27, 2024 | TNXP | Stock Option | Common Stock | $0.37 | Feb. 27, 2034 | 235,320 | Acquired |
| Feb. 27, 2024 | TNXP | Stock Option | Common Stock | $0.46 | Feb. 27, 2034 | 1,903,680 | Acquired |
| Feb. 27, 2024 | TNXP | Stock Option | Common Stock | $0.04 | Feb. 27, 2034 | 1,309,911 | Acquired |
| Feb. 23, 2023 | TNXP | Stock Option | Common Stock | $0.73 | Feb. 23, 2033 | 700,000 | Acquired |
| Feb. 23, 2023 | TNXP | Stock Option | Common Stock | $0.91 | Feb. 23, 2033 | 700,000 | Acquired |
| Feb. 15, 2022 | TNXP | Stock Option | Common Stock | $0.21 | Feb. 15, 2032 | 5,000,000 | Acquired |
| Feb. 15, 2022 | TNXP | Stock Option | Common Stock | $0.41 | Feb. 15, 2032 | 5,000,000 | Acquired |
| Feb. 15, 2022 | TNXP | Stock Option | Common Stock | $0.62 | Feb. 15, 2032 | 5,000,000 | Acquired |
| Feb. 15, 2022 | TNXP | Stock Option | Common Stock | $0.83 | Feb. 15, 2032 | 5,000,000 | Acquired |
| Feb. 23, 2021 | TNXP | Stock Option | Common Stock | $1.22 | Feb. 23, 2031 | 3,000,000 | Acquired |
| Feb. 23, 2021 | TNXP | Stock Option | Common Stock | $1.53 | Feb. 23, 2031 | 3,000,000 | Acquired |
| May 4, 2020 | TNXP | Stock Option | Common Stock | $0.77 | May 4, 2030 | 2,000,000 | Acquired |
| May 4, 2020 | TNXP | Stock Option | Common Stock | $0.96 | May 4, 2030 | 2,000,000 | Acquired |
| Feb. 25, 2020 | TNXP | Stock Option | Common Stock | $0.40 | Feb. 25, 2030 | 120,000 | Acquired |
| Feb. 25, 2020 | TNXP | Stock Option | Common Stock | $0.50 | Feb. 25, 2030 | 120,000 | Acquired |
| May 6, 2019 | TNXP | Stock Option | Common Stock | $2.05 | May 6, 2029 | 129,758 | Acquired |
| May 6, 2019 | TNXP | Stock Option | Common Stock | $2.56 | May 6, 2029 | 129,757 | Acquired |
| Feb. 26, 2019 | TNXP | Stock Option | Common Stock | $1.89 | Feb. 25, 2029 | 23,265 | Acquired |
| Feb. 26, 2019 | TNXP | Stock Option | Common Stock | $2.36 | Feb. 25, 2029 | 23,265 | Acquired |
| Feb. 13, 2018 | TNXP | Stock Option | Common Stock | $3.40 | Feb. 12, 2028 | 156,601 | Acquired |
| Feb. 13, 2018 | TNXP | Stock Option | Common Stock | $4.25 | Feb. 12, 2028 | 156,601 | Acquired |
| March 1, 2017 | TNXP | Stock Option | Common Stock | $0.55 | March 1, 2027 | 160,000 | Acquired |
| March 1, 2017 | TNXP | Stock Option | Common Stock | $0.55 | March 1, 2027 | 160,000 | Acquired |
| Oct. 31, 2016 | TNXP | Common Stock Purchase Warrant | Common Stock | $0.63 | Oct. 31, 2021 | 10,000 | Acquired |
| Feb. 9, 2016 | TNXP | Stock Option | Common Stock | $5.03 | Feb. 9, 2026 | 110,000 | Acquired |
| Feb. 9, 2016 | TNXP | Stock Option | Common Stock | $5.03 | Feb. 9, 2026 | 110,000 | Acquired |
| Feb. 25, 2015 | TNXP | Stock Option | Common Stock | $5.95 | Feb. 25, 2025 | 7,143 | Acquired |
| Feb. 25, 2015 | TNXP | Stock Option | Common Stock | $5.95 | Feb. 25, 2025 | 189,000 | Acquired |
| Oct. 29, 2014 | TNXP | Stock Option | Common Stock | $6.68 | Oct. 29, 2024 | 100,000 | Acquired |
| June 17, 2014 | TNXP | Stock Option | Common Stock | $9.87 | June 17, 2024 | 100,000 | Acquired |
| Feb. 11, 2014 | TNXP | Stock Option | Common Stock | $15.88 | Feb. 11, 2024 | 71,000 | Acquired |
| Aug. 14, 2013 | TNXP | Series A common stock purchase warrant | common stock | $4.25 | Aug. 14, 2018 | 11,765 | Acquired |
| Feb. 12, 2013 | TNXP | Stock Option | Common Stock | $0.51 | Feb. 12, 2023 | 1,350,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 18 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Jan. 14, 2013 | TNXP | Common Stock, Par Value $0.001 | 746,165 | Direct |
| Jan. 14, 2013 | TNXP | Common Stock, Par Value $0.001 | 3,692,558 | Indirect |
| Jan. 14, 2013 | TNXP | Common Stock, Par Value $0.001 | 649,138 | Indirect |
| Jan. 14, 2013 | TNXP | Common Stock, Par Value $0.001 | 1,179,424 | Indirect |
| Jan. 14, 2013 | TNXP | Common Stock, Par Value $0.001 | 83,333 | Indirect |
| Jan. 14, 2013 | TNXP | Common Stock, Par Value $0.001 | 83,333 | Indirect |
| Jan. 14, 2013 | TNXP | Warrants | 90,000 | Indirect |
| Jan. 14, 2013 | TNXP | Warrants | 1,000,000 | Indirect |
| Jan. 14, 2013 | TNXP | Warrants | 1,000,000 | Indirect |
| Jan. 14, 2013 | TNXP | Warrants | 10,000 | Indirect |
| Jan. 14, 2013 | TNXP | Warrants | 10,000 | Indirect |
| Jan. 14, 2013 | TNXP | Warrants | 233,333 | Indirect |
| Jan. 14, 2013 | TNXP | Warrants | 233,333 | Indirect |
| Jan. 14, 2013 | TNXP | Warrants | 165,000 | Indirect |
| Jan. 14, 2013 | TNXP | Warrants | 83,333 | Indirect |
| Jan. 14, 2013 | TNXP | Warrants | 83,333 | Indirect |
| Jan. 14, 2013 | TNXP | Warrants | 83,333 | Indirect |
| Jan. 14, 2013 | TNXP | Warrants | 83,333 | Indirect |
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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $702,000 | $596,700 | · | $1,870,130 | · | · | · | $3,168,830 |
| 2023 | $675,000 | · | · | $1,375,065 | · | · | · | $2,050,065 |
| 2021 | $675,000 | $506,250 | · | $6,527,139 | · | · | · | $7,708,389 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.