Insider · CIK 0002000342
Mark David Novara
Files at TNDM (TANDEM DIABETES CARE INC). First filing Nov 19, 2024, latest Mar 18, 2026.
In brief
Mark David Novara files SEC Form 4 as officer at TNDM (TANDEM DIABETES CARE INC). Since Nov 19, 2024, Mark David Novara has reported 1 open-market buy worth $12k and 2 open-market sells worth $4,356, the latest filed on Mar 18, 2026.
A track record needs three past buys with six months of prices behind them; Mark David Novara has 1, so none is measured yet.
The newest scored trade: sold $4,310 of TNDM on Mar 17, 2026, filed Mar 18, 2026, scored 0 (weak), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 2 sells worth $4,356.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
TNDM: TANDEM DIABETES CARE INC
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 0Weak | TANDEM DIABETES CARE INC | $4,310 187 shares | -0% | +136% from low-15% from high | |
| 0Weak | TANDEM DIABETES CARE INC | $46 2 shares | -0% | +124% from low-20% from high | |
| 23Weak | TNDMbuy TANDEM DIABETES CARE INC | $12k 532 shares | - | - |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Sep 17, 2026 | TNDM Tandem Diabetes Care, Inc. | 360 0.00% of outstanding | $6,311 | Sep 17, 2026 | $2,907 |
| Aug 18, 2026 | TNDM Tandem Diabetes Care, Inc. | 131 0.00% of outstanding | $2,915 | Aug 18, 2026 | $9,534 |
| Jun 17, 2026 | TNDM Tandem Diabetes Care, Inc. | 361 0.00% of outstanding | $6,025 | Jun 17, 2026 | $3,599 |
| May 19, 2026 | TNDM Tandem Diabetes Care, Inc. | 266 0.00% of outstanding | $3,599 | May 19, 2026 | $4,356 |
| Mar 17, 2026 | TNDM Tandem Diabetes Care, Inc. | 187 0.00% of outstanding | $4,097 | Mar 17, 2026 | $46 |
| Mar 5, 2026 | TNDM Tandem Diabetes Care, Inc. | 2 0.00% of outstanding | $47 | Mar 5, 2026 | none |
Transactions
Every row this insider has filed, 39 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| May 15, 2026 | TNDM TANDEM DIABETES CARE INC | MOption exercise Common Stock | +76 | $0.00 | $0 | 37,732 | May 19, 2026 |
| May 15, 2026 | TNDM TANDEM DIABETES CARE INC | FTax withholding Common Stock | -57 | $12.82 | $731 | 37,675 | May 19, 2026 |
| May 15, 2026 | TNDM TANDEM DIABETES CARE INC | MOption exercise Common Stock | +10,496 | $0.00 | $0 | 48,171 | May 19, 2026 |
| May 15, 2026 | TNDM TANDEM DIABETES CARE INC | FTax withholding Common Stock | -7,854 | $12.82 | $101k | 40,317 | May 19, 2026 |
| May 15, 2026 | TNDM TANDEM DIABETES CARE INC | MOption exercise Restricted Stock Unitderivative | -76 | $0.00 | $0 | 304 | May 19, 2026 |
| May 15, 2026 | TNDM TANDEM DIABETES CARE INC | MOption exercise Restricted Stock Unitderivative | -10,496 | $0.00 | $0 | 20,992 | May 19, 2026 |
| Mar 16, 2026 | TNDM TANDEM DIABETES CARE INC | MOption exercise Common Stock | +7,414 | $0.00 | $0 | 43,383 | Mar 18, 2026 |
| Mar 16, 2026 | TNDM TANDEM DIABETES CARE INC | FTax withholding Common Stock | -5,540 | $21.59 | $120k | 37,843 | Mar 18, 2026 |
| Mar 17, 2026 | TNDM TANDEM DIABETES CARE INC | SOpen-market sale Common Stock10b5-1 | -187 | $23.05 | $4,310 | 37,656 | Mar 18, 2026 |
| Mar 16, 2026 | TNDM TANDEM DIABETES CARE INC | MOption exercise Restricted Stock Unitderivative | -7,414 | $0.00 | $0 | 22,244 | Mar 18, 2026 |
| Mar 5, 2026 | TNDM TANDEM DIABETES CARE INC | SOpen-market sale Common Stock10b5-1 | -2 | $22.81 | $46 | 35,969 | Mar 9, 2026 |
| Feb 17, 2026 | TNDM TANDEM DIABETES CARE INC | MOption exercise Common Stock | +77 | $0.00 | $0 | 36,033 | Feb 19, 2026 |
| Feb 17, 2026 | TNDM TANDEM DIABETES CARE INC | FTax withholding Common Stock | -62 | $18.95 | $1,175 | 35,971 | Feb 19, 2026 |
| Feb 17, 2026 | TNDM TANDEM DIABETES CARE INC | MOption exercise Restricted Stock Unitderivative | -77 | $0.00 | $0 | 380 | Feb 19, 2026 |
| Dec 15, 2025 | TNDM TANDEM DIABETES CARE INC | MOption exercise Common Stock | +7,415 | $0.00 | $0 | 39,799 | Dec 17, 2025 |
| Dec 15, 2025 | TNDM TANDEM DIABETES CARE INC | FTax withholding Common Stock | -3,843 | $22.11 | $85k | 35,956 | Dec 17, 2025 |
| Dec 15, 2025 | TNDM TANDEM DIABETES CARE INC | MOption exercise Restricted Stock Unitderivative | -7,415 | $0.00 | $0 | 29,658 | Dec 17, 2025 |
| Nov 17, 2025 | TNDM TANDEM DIABETES CARE INC | MOption exercise Common Stock | +76 | $0.00 | $0 | 32,424 | Nov 19, 2025 |
| Nov 17, 2025 | TNDM TANDEM DIABETES CARE INC | FTax withholding Common Stock | -40 | $18.61 | $744 | 32,384 | Nov 19, 2025 |
| Nov 17, 2025 | TNDM TANDEM DIABETES CARE INC | MOption exercise Restricted Stock Unitderivative | -76 | $0.00 | $0 | 457 | Nov 19, 2025 |
| Sep 15, 2025 | TNDM TANDEM DIABETES CARE INC | MOption exercise Common Stock | +7,415 | $0.00 | $0 | 36,214 | Sep 16, 2025 |
| Sep 15, 2025 | TNDM TANDEM DIABETES CARE INC | FTax withholding Common Stock | -3,866 | $12.09 | $47k | 32,348 | Sep 16, 2025 |
| Sep 15, 2025 | TNDM TANDEM DIABETES CARE INC | MOption exercise Restricted Stock Unitderivative | -7,415 | $0.00 | $0 | 37,073 | Sep 16, 2025 |
| Aug 15, 2025 | TNDM TANDEM DIABETES CARE INC | MOption exercise Common Stock | +76 | $0.00 | $0 | 28,839 | Aug 19, 2025 |
| Aug 15, 2025 | TNDM TANDEM DIABETES CARE INC | FTax withholding Common Stock | -40 | $10.82 | $433 | 28,799 | Aug 19, 2025 |
| Aug 15, 2025 | TNDM TANDEM DIABETES CARE INC | MOption exercise Restricted Stock Unitderivative | -76 | $0.00 | $0 | 533 | Aug 19, 2025 |
| Jun 16, 2025 | TNDM TANDEM DIABETES CARE INC | MOption exercise Common Stock | +7,414 | $0.00 | $0 | 32,609 | Jun 18, 2025 |
| Jun 16, 2025 | TNDM TANDEM DIABETES CARE INC | FTax withholding Common Stock | -3,846 | $20.76 | $80k | 28,763 | Jun 18, 2025 |
| Jun 16, 2025 | TNDM TANDEM DIABETES CARE INC | MOption exercise Restricted Stock Unitderivative | -7,414 | $0.00 | $0 | 44,488 | Jun 18, 2025 |
| May 30, 2025 | TNDM TANDEM DIABETES CARE INC | AGrant or award Performance Stock Unitderivative | +31,486 | $0.00 | $0 | 31,486 | Jun 5, 2025 |
| May 30, 2025 | TNDM TANDEM DIABETES CARE INC | AGrant or award Restricted Stock Unitderivative | +31,488 | $0.00 | $0 | 31,488 | Jun 5, 2025 |
| May 15, 2025 | TNDM TANDEM DIABETES CARE INC | AGrant or award Common Stock | +870 | $19.30 | $17k | 25,004 | May 19, 2025 |
| May 15, 2025 | TNDM TANDEM DIABETES CARE INC | MOption exercise Common Stock | +304 | $0.00 | $0 | 25,308 | May 19, 2025 |
| May 15, 2025 | TNDM TANDEM DIABETES CARE INC | FTax withholding Common Stock | -113 | $22.70 | $2,565 | 25,195 | May 19, 2025 |
| May 15, 2025 | TNDM TANDEM DIABETES CARE INC | MOption exercise Restricted Stock Unitderivative | -304 | $0.00 | $0 | 609 | May 19, 2025 |
| Dec 16, 2024 | TNDM TANDEM DIABETES CARE INC | MOption exercise Common Stock | +29,658 | $0.00 | $0 | 30,190 | Dec 18, 2024 |
| Dec 16, 2024 | TNDM TANDEM DIABETES CARE INC | FTax withholding Common Stock | -10,732 | $32.66 | $351k | 19,458 | Dec 18, 2024 |
| Dec 16, 2024 | TNDM TANDEM DIABETES CARE INC | MOption exercise Restricted Stock Unitderivative | -29,658 | $0.00 | $0 | 59,317 | Dec 18, 2024 |
| Nov 15, 2024 | TNDM TANDEM DIABETES CARE INC | POpen-market purchase Common Stock | +532 | $23.24 | $12k | 532 | Nov 19, 2024 |
Questions about Mark David Novara
Answered from the filings on this page, as of the latest one.
Is Mark David Novara buying or selling?
In the last 12 months Mark David Novara reported 0 open-market buys worth $0 and 2 open-market sells worth $4,356 on SEC Form 4; the latest was sold $4,310 of TNDM on Mar 17, 2026. Grants, option exercises and tax withholding are not counted.
How did Mark David Novara's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Mark David Novara has 1.
Where does Mark David Novara file Form 4?
Mark David Novara has filed Form 4 at TNDM (TANDEM DIABETES CARE INC) as EVP & CHIEF COMMERCIAL OFFICER. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.