TLN's three largest insider shareholders as of September 29, 2026 are Capital Management Lp Rubric (TenPercentOwner, 6.48Mn shares), Capital Management Lp Rubric (TenPercentOwner, 6.12Mn shares), Capital Management Lp Rubric (TenPercentOwner, 6.08Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Capital Management Lp Rubric | TenPercentOwner | 0 | 10,532,288 | 10,532,288 | 93.7% | 27 Jun, 2025 |
| 2 | Mark Allen Mcfarland | Chief Executive Officer | 117 | 260,335 | 260,452 | 2.3% | 08 Jun, 2026 |
| 3 | Terry L Nutt | President | 72,865 | 0 | 72,865 | 0.6% | 15 Jul, 2026 |
| 4 | Andrew M Wright | Chief Administrative Officer | 70,200 | 0 | 70,200 | 0.6% | 27 May, 2026 |
| 5 | Brad Berryman | Chief Operating Officer | 67,729 | 0 | 67,729 | 0.6% | 27 May, 2026 |
| 6 | Dale E Jr. Lebsack | Chief Asset Dev. Officer | 62,927 | 0 | 62,927 | 0.6% | 27 May, 2026 |
| 7 | Christopher E Morice | Chief Commercial Officer | 49,174 | 0 | 49,174 | 0.4% | 27 May, 2026 |
| 8 | Cole Muller | Chief Financial Officer | 42,968 | 0 | 42,968 | 0.4% | 27 May, 2026 |
| 9 | Stephen Schaefer | Director | 19,825 | 0 | 19,825 | 0.2% | 27 May, 2026 |
| 10 | John C Wander | Gen. Counsel Corp. Secretary | 12,602 | 0 | 12,602 | 0.1% | 30 Jun, 2025 |
| 11 | Anthony R Horton | Director | 9,265 | 0 | 9,265 | 0.1% | 27 May, 2026 |
| 12 | Edward T. Casulli | Svp Chief Nuclear Officer | 7,205 | 0 | 7,205 | 0.1% | 27 May, 2026 |
| 13 | Anthony J Plagens | Svp Chief Accounting Officer | 6,874 | 0 | 6,874 | 0.1% | 27 May, 2026 |
| 14 | Christine Benson Schwartzstein | Director | 6,736 | 0 | 6,736 | 0.1% | 27 May, 2026 |
| 15 | Joseph Nigro | Director | 5,206 | 0 | 5,206 | 0.0% | 27 May, 2026 |
| 16 | Karen T Hyde | Director | 5,206 | 0 | 5,206 | 0.0% | 27 May, 2026 |
| 17 | Darren J Olagues | Chief Development Officer | 4,601 | 0 | 4,601 | 0.0% | 27 May, 2026 |
| 18 | Gizman I Abbas | Director | 2,606 | 0 | 2,606 | 0.0% | 17 Jun, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 15 Jul, 2026 | Terry L Nutt | President | Acquired M | 8,312 | — | — | 76,136 | Direct |
| 15 Jul, 2026 | Terry L Nutt | President | Disposed F | 3,271 | $385.80 | $1.26Mn | 72,865 | Direct |
| 15 Jul, 2026 | Terry L Nutt | President | Disposed M | 20,780 | $0.00 | $0 | 0 | Direct |
| 15 Jun, 2026 | Gizman I Abbas | Director | Disposed S | 2,600 | $380.00 | $988.00K | 2,606 | Direct |
| 08 Jun, 2026 | Mark Allen Mcfarland | Chief Executive Officer | Disposed J | 260,335 | $0.00 | $0 | 117 | Direct |
| 08 Jun, 2026 | Mark Allen Mcfarland | Chief Executive Officer | Acquired J | 260,335 | $0.00 | $0 | 260,335 | Indirect |
| 22 May, 2026 | Anthony R Horton | Director | Acquired M | 4,133 | — | — | 9,265 | Direct |
| 22 May, 2026 | Brad Berryman | Chief Operating Officer | Acquired M | 8,312 | — | — | 19,950 | Direct |
| 22 May, 2026 | Joseph Nigro | Director | Acquired M | 4,133 | — | — | 6,736 | Direct |
| 22 May, 2026 | Cole Muller | Chief Financial Officer | Acquired M | 5,270 | — | — | 12,715 | Direct |
| 22 May, 2026 | Mark Allen Mcfarland | Chief Executive Officer | Acquired M | 29,752 | — | — | 74,980 | Direct |
| 22 May, 2026 | Anthony J Plagens | Svp Chief Accounting Officer | Acquired M | 2,267 | — | — | 5,704 | Direct |
| 22 May, 2026 | Christine Benson Schwartzstein | Director | Acquired M | 4,133 | — | — | 6,736 | Direct |
| 22 May, 2026 | Edward T. Casulli | Svp Chief Nuclear Officer | Acquired M | 2,550 | — | — | 6,153 | Direct |
| 22 May, 2026 | Gizman I Abbas | Director | Acquired M | 4,133 | — | — | 6,736 | Direct |
| 22 May, 2026 | Darren J Olagues | Chief Development Officer | Acquired M | 7,395 | — | — | 7,512 | Direct |
| 22 May, 2026 | Karen T Hyde | Director | Acquired M | 4,133 | — | — | 6,736 | Direct |
| 22 May, 2026 | Terry L Nutt | President | Acquired M | 90,826 | — | — | 103,502 | Direct |
| 22 May, 2026 | Andrew M Wright | Chief Administrative Officer | Acquired M | 8,010 | — | — | 20,271 | Direct |
| 22 May, 2026 | Stephen Schaefer | Director | Acquired M | 4,133 | — | — | 8,265 | Direct |