Follow the people · Insider
Thomas C. Chen
Thomas C. Chen files insider transactions with the SEC as a ceo of Neonc Technologies Holdings (NTHI). We hold 7 disclosed purchases and sales filed since 28 March 2025, 7 of them in the last 90 days.
- Files forNTHI
- Disclosed buys and sells7 in all, 7 in the last 90 days
- Last disclosure20 August 2026
Positions held
1 post we hold — a term names its own dates; a run of filings only says when they filed- Filed 26 March 2025 — 18 August 2026CEO · Neonc Technologies Holdings (NTHI)21 Form 4 lines · source: SEC Form 4
Everything they disclosed
21 entries, newest first — one per disclosure report, one per Form 4 line- ▲ bought on the open market 948 shares of Neonc Technologies HoldingsSEC Form 420 August 2026Common Stock · traded 10 April 2026 · filed 20 August 2026
- ▲ bought on the open market 10,000 shares of Neonc Technologies HoldingsSEC Form 420 August 2026Common Stock · traded 24 April 2026 · filed 20 August 2026
- ▲ bought on the open market 33,787 shares of Neonc Technologies HoldingsSEC Form 420 August 2026Common Stock · traded 14 August 2026 · filed 20 August 2026
- ▲ bought on the open market 2,472 shares of Neonc Technologies HoldingsSEC Form 420 August 2026Common Stock · traded 17 August 2026 · filed 20 August 2026
- ▲ bought on the open market 12,757 shares of Neonc Technologies HoldingsSEC Form 420 August 2026Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▲ bought on the open market 33,787 shares of Neonc Technologies HoldingsSEC Form 418 August 2026Common Stock · traded 14 August 2026 · filed 18 August 2026
- ▲ bought on the open market 2,472 shares of Neonc Technologies HoldingsSEC Form 418 August 2026Common Stock · traded 17 August 2026 · filed 18 August 2026
- exercised in-the-money options over 79,688 shares of Neonc Technologies Holdings (a derivative holding)SEC Form 45 June 2025Warrant (right to buy) · traded 26 March 2025 · filed 5 June 2025
- acquired or disposed of, other 4,076 shares of Neonc Technologies HoldingsSEC Form 45 June 2025Common Stock · traded 26 March 2025 · filed 5 June 2025
- exercised in-the-money options over 79,688 shares of Neonc Technologies HoldingsSEC Form 45 June 2025Common Stock · traded 26 March 2025 · filed 5 June 2025
- ▼ sold on the open market 38,250 shares of Neonc Technologies HoldingsSEC Form 45 June 2025Common Stock · traded 26 March 2025 · filed 5 June 2025
- ▼ sold on the open market 983 shares of Neonc Technologies HoldingsSEC Form 45 June 2025Common Stock · traded 26 March 2025 · filed 5 June 2025
- ▲ bought on the open market 2,759 shares of Neonc Technologies HoldingsSEC Form 423 May 2025Common Stock · traded 21 May 2025 · filed 23 May 2025
- ▲ bought on the open market 2,709 shares of Neonc Technologies HoldingsSEC Form 423 May 2025Common Stock · traded 22 May 2025 · filed 23 May 2025
- ▲ bought on the open market 400 shares of Neonc Technologies HoldingsSEC Form 419 May 2025Common Stock · traded 12 May 2025 · filed 19 May 2025
- exercised in-the-money options over 79,688 shares of Neonc Technologies Holdings (a derivative holding)SEC Form 48 April 2025Warrant (right to buy) · traded 26 March 2025 · filed 8 April 2025
- acquired or disposed of, other 4,076 shares of Neonc Technologies HoldingsSEC Form 48 April 2025Common Stock · traded 26 March 2025 · filed 8 April 2025
- exercised in-the-money options over 79,688 shares of Neonc Technologies HoldingsSEC Form 48 April 2025Common Stock · traded 26 March 2025 · filed 8 April 2025
- ▼ sold on the open market 38,250 shares of Neonc Technologies HoldingsSEC Form 48 April 2025Common Stock · traded 26 March 2025 · filed 8 April 2025
- ▼ sold on the open market 983 shares of Neonc Technologies HoldingsSEC Form 48 April 2025Common Stock · traded 26 March 2025 · filed 8 April 2025
- acquired or disposed of, other 4,076 shares of Neonc Technologies HoldingsSEC Form 428 March 2025Common Stock · traded 26 March 2025 · filed 28 March 2025
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.