Who
Donald J. Tringali
Director
Company insider
Files Form 4 as: Director, Natural Gas Services Group; Director, Firefly Neuroscience; Director, Cartesian; Director, National Technical Systems Inc /ca/.
In numbers
- Trades disclosed
- 65
- Buys
- 9
- Sells
- 0
- Bought
- $71K
- Sold
- $0
- Companies
- 4
- Companies where not an officer
- 4
- First trade
- 7 Sep 2006
- Last trade
- 2 Sep 2026
- Last filed
- 3 Sep 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 2 Sep 2026filed 3 Sep 2026 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | $2,07859 at $35.22 | filing |
| 2 Sep 2026filed 3 Sep 2026 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | $2,07859 at $35.22 | filing |
| 10 Jun 2026filed 11 Jun 2026 | NGS Natural Gas Services Groupoption or derivative · Oilfield services | SEC FORM 4 Code A | —4,574 at $0.00 | filing |
| 10 Jun 2026filed 11 Jun 2026 | NGS Natural Gas Services Groupoption or derivative · Oilfield services | SEC FORM 4 Code A | —4,574 at $0.00 | filing |
| 8 Jun 2026filed 9 Jun 2026 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | $2,07949 at $42.42 | filing |
| 8 Jun 2026filed 9 Jun 2026 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | $2,07949 at $42.42 | filing |
| 5 Jun 2026filed 8 Jun 2026 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | —446 | filing |
| 5 Jun 2026filed 8 Jun 2026 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | —4,010 | filing |
| 5 Jun 2026filed 8 Jun 2026 | NGS Natural Gas Services Groupoption or derivative · Oilfield services | SEC FORM 4 Code M | —4,456 at $0.00 | filing |
| 5 Jun 2026filed 8 Jun 2026 | NGS Natural Gas Services Groupoption or derivative · Oilfield services | SEC FORM 4 Code M | —4,456 at $0.00 | filing |
| 5 Jun 2026filed 8 Jun 2026 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | —446 | filing |
| 5 Jun 2026filed 8 Jun 2026 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | —4,010 | filing |
| 4 Mar 2026filed 6 Mar 2026 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | $1,50140 at $37.52 | filing |
| 4 Mar 2026filed 6 Mar 2026 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | $1,50140 at $37.52 | filing |
| 3 Dec 2025filed 5 Dec 2025 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | $1,49549 at $30.50 | filing |
| 8 Aug 2025filed 25 Aug 2025 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | $84334 at $24.78 | filing |
| 13 Jun 2025filed 16 Jun 2025 | NGS Natural Gas Services Groupoption or derivative · Oilfield services | SEC FORM 4 Code M | —5,620 at $0.00 | filing |
| 13 Jun 2025filed 16 Jun 2025 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | —562 | filing |
| 13 Jun 2025filed 16 Jun 2025 | NGS Natural Gas Services GroupOilfield services | SEC FORM 4 Code A | —5,058 | filing |
| 5 Jun 2025filed 9 Jun 2025 | NGS Natural Gas Services Groupoption or derivative · Oilfield services | SEC FORM 4 Code A | —4,456 at $0.00 | filing |
News
No headline names them, or the companies they trade most, lately.