Seth Lederman
Chief Executive Officer, Director at Tonix Pharmaceuticals Holding Corp. (TNXP)
Seth Lederman has filed 16 insider reports with the SEC since February 2021, as chief Executive Officer and director at Tonix Pharmaceuticals Holding Corp. (TNXP). In the last 12 months Seth Lederman bought $170K of stock on the open market. In the latest amended filing, on November 12, 2026, Seth Lederman bought 5,000 shares of Tonix Pharmaceuticals Holding Corp. (TNXP) for $20.3K at an average of $4.06.
- Filings
- 16
- Companies
- 1
- Bought on market
- $344K
- Sold on market
- None
Companies where Seth Lederman is an insider
| Company | Role | Shares held | Bought | Sold | Avg buy | Price now | Last filing |
|---|---|---|---|---|---|---|---|
| Chief Executive Officer, Director | 16,005 | $344K | $2.03 | $3.01+48% | Nov 12, 2026 |
Shares held: common shares owned directly after the latest filing that states it. Avg buy: open-market purchase dollars divided by shares bought, every filing on record. Price now: the latest daily close, against the average buy price.
Every filing
- Nov 11, 2026+$20.3KTNXPChief Executive Officer Lederman Seth bought $20,275 worth of shares (5,000 units at $4.05), increasing direct ownership by 45% to 16,005 unitsForm 4/AOpen-market purchase
- Aug 27, 2026+$27.6KTNXPChief Executive Officer Lederman Seth bought $27,580 worth of shares (2,000 units at $13.79)Form 4/AOpen-market purchase
- Jun 9, 2026+$59KTNXPChief Executive Officer Lederman Seth bought $58,950 worth of shares (5,000 units at $11.79), increasing direct ownership by 125% to 9,005 unitsForm 4/AOpen-market purchase
- Mar 31, 2026+$63.1KTNXPSEC Form 4 filed by Lederman SethForm 4Open-market purchase
- Feb 24, 2026TNXPSEC Form 4 filed by Chief Executive Officer Lederman SethForm 4Grant or award
- May 15, 2025+$86.2KTNXPChief Executive Officer Lederman Seth bought $86,200 worth of shares (4,000 units at $21.55), increasing direct ownership by 80,000% to 4,005 unitsForm 4/AOpen-market purchase
- Feb 25, 2025TNXPChief Executive Officer Lederman Seth disposed of $18 worth of shares (6 units at $2.87), decreasing direct ownership by 51% to 5 unitsForm 4Grant or awardOther acquisition or disposition
- Feb 27, 2024TNXPSEC Form 4 filed by Lederman Seth (Amendment)Form 4Grant or award
- Feb 27, 2024TNXPSEC Form 4 filed by Lederman SethForm 4Grant or award
- Feb 23, 2023TNXPSEC Form 4 filed by Lederman SethForm 4Grant or award
- Jun 29, 2022+$34.2KTNXPSEC Form 4: Lederman Seth bought $34,200 worth of shares (20,000 units at $1.71)Form 4Open-market purchase
- Mar 25, 2022+$24.5KTNXPSEC Form 4: Lederman Seth bought $24,500 worth of shares (100,000 units at $0.24), increasing direct ownership by 821% to 112,177 unitsForm 4Open-market purchase
- Feb 15, 2022TNXPSEC Form 4 filed by Lederman SethForm 4Grant or award
- Sep 28, 2021+$7,320TNXPSEC Form 4: Lederman Seth bought $7,320 worth of shares (12,000 units at $0.61), increasing direct ownership by 6,780% to 12,177 unitsForm 4Open-market purchase
- Mar 24, 2021+$22.1KTNXPSEC Form 4: Seth Lederman bought $22,088 worth of Common Stock (16,733 units at $1.32)Form 4Open-market purchase
- Feb 23, 2021TNXPSEC Form 4 filed by Seth LedermanForm 4Grant or award
Compare Seth Lederman with
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- Seth Lederman vs Richard H Bagger1 shared
- Seth Lederman vs Bradley Saenger1 shared
- Seth Lederman vs Carolyn E. Taylor1 shared
- Seth Lederman vs Richard Newcomb Stillwell1 shared
- Seth Lederman vs Adeoye Y Olukotun1 shared
Other insiders at the same companies
- Thomas EngleseTNXP
- Richard H BaggerTNXP
- Bradley SaengerTNXP
- Carolyn E. TaylorTNXP
- Richard Newcomb StillwellTNXP
- Adeoye Y OlukotunTNXP
- Margaret Smith BellTNXP
- James Randolph Hunter JrTNXP
- James TrecoTNXP
- David L GrangeTNXP
- Jessica Edgar MorrisTNXP
- Gregory M SullivanTNXP
- Siobhan FogartyTNXP
Questions about Seth Lederman
- What is Seth Lederman's role at Tonix Pharmaceuticals Holding Corp.?
- Seth Lederman reports to the SEC as chief Executive Officer and director at Tonix Pharmaceuticals Holding Corp. (TNXP), according to the latest filing on November 12, 2026.
- How many shares does Seth Lederman own?
- After the latest filing that states it, Seth Lederman directly owned 16,005 shares of Tonix Pharmaceuticals Holding Corp. (TNXP). Shares held through trusts, funds or family members are reported separately and are not counted here.
- Has Seth Lederman bought or sold stock recently?
- The most recent open-market purchase was on November 11, 2026: bought 5,000 shares of Tonix Pharmaceuticals Holding Corp. (TNXP) for $20.3K at an average of $4.06.
- How do I get alerts when Seth Lederman files?
- Follow Seth Lederman on Quantisnow and you get an email, and a phone notification on Plus, within minutes of each new Form 4 or Form 5, and of each Form 144 notice of a planned sale. Seth Lederman filed 2 times in the last 90 days.
From SEC Forms 3, 4, 5 and 144 filed by Seth Lederman (SEC CIK 0001563420). Totals count each trade once, skipping amendments whose original is on file, from Feb 25, 2021 on. View on SEC EDGAR