Neutral Tandem Inc (TNDM) is a publicly traded company in the Unknown sector. Across all available filings, 23 corporate insiders have executed 1075 transactions totaling $250.9M, demonstrating a bearish sentiment with -$248.1M in net insider flow. The most recent transaction on Dec 15, 2025 involved a transaction of 207 shares valued at $4.6K.
No significant insider buying has been recorded for TNDM in the recent period.
No significant insider selling has been recorded for TNDM in the recent period.
Based on recent SEC filings, insider sentiment for TNDM is bearish with an Insider Alignment Score of 1/100 and a net flow of -$248.1M. Insiders are reducing their positions, though this can be driven by factors unrelated to company outlook.
Insider trading at Neutral Tandem Inc (TNDM) refers to stock transactions made by corporate insiders—executives, directors, and beneficial owners holding more than 10% of the company's shares. These individuals have access to material non-public information and are required by law to report their trades to the SEC within two business days. Currently, 23 insiders are actively trading TNDM stock, having executed 1075 transactions in the past 90 days. The most active insider is Kim D. Blickenstaff (Executive), who has made 85 transactions totaling $139.6M.
Get notified when executives and directors at TNDM file new Form 4 transactions
Date | Insider | Title | Type | Shares | Price | Value | Flags |
|---|---|---|---|---|---|---|---|
| Dec 15, 2025 | Carpenter Rick | Executive | Payment | 207 | $22.11 | $4.6K | |
| Dec 15, 2025 | Carpenter Rick | Executive | Option Exercise | 406 | $N/A | $0 | |
| Dec 15, 2025 | David Novara Mark | Executive | Payment | 3,843 | $22.11 | $85.0K | |
| Dec 15, 2025 | David Novara Mark | Executive | Option Exercise | 7,415 | $N/A | $0 | |
| Dec 4, 2025 | Anne Gasser Elizabeth | Executive | Other | 3,000 | $N/A | $0 | |
| Dec 4, 2025 | Anne Gasser Elizabeth | Executive | Other | 3,000 | $N/A | $0 | |
| Nov 17, 2025 | Marie Hansen Shannon | Executive | Option Exercise | 1,437 | $N/A | $0 | |
| Nov 17, 2025 | Marie Hansen Shannon | Executive | Payment | 190 | $18.61 | $3.5K | |
| Nov 17, 2025 | Marie Hansen Shannon | Executive | Option Exercise | 1,096 | $N/A | $0 | |
| Nov 17, 2025 | Marie Hansen Shannon | Executive | Payment | 393 | $18.61 | $7.3K | |
| Nov 17, 2025 | Marie Hansen Shannon | Executive | Payment | 515 | $18.61 | $9.6K | |
| Nov 17, 2025 | Marie Hansen Shannon | Executive | Award | 800 | $15.59 | $12.5K | |
| Nov 17, 2025 | Marie Hansen Shannon | Executive | Option Exercise | 530 | $N/A | $0 | |
| Nov 17, 2025 | Vosseller Leigh | Executive | Option Exercise | 1,503 | $N/A | $0 | |
| Nov 17, 2025 | Vosseller Leigh | Executive | Payment | 538 | $18.61 | $10.0K |
| TYPE | COUNT | VALUE | % |
|---|---|---|---|
Sale(S) | 262 | $249.5M | 83.8% |
Exercise(M) | 453 | $32.7M | 11.0% |
Gift(G) | 31 | $9.2M | 3.1% |
Payment(F) | 253 | $4.2M | 1.4% |
Purchase(P) | 18 | $1.4M | 0.5% |
Award(A) | 44 | $589.5K | 0.2% |
Other(J) | 14 | $0 | 0.0% |
Insider selling pressure at Neutral Tandem Inc has increased, with 23 insiders executing 1075 transactions across all time. Total sales of $249.5M significantly outpace purchases of $1.4M, resulting in a net outflow of $248.1M. This selling activity appears largely discretionary, which may warrant closer attention from investors.