Insider · CIK 0002048588
Stephen Feider
cfoofficer
Files at BBNX (Beta Bionics, Inc.). First filing Jun 4, 2025, latest Sep 3, 2026.
In brief
Stephen Feider files SEC Form 4 as CFO at BBNX (Beta Bionics, Inc.). Since Jun 4, 2025, Stephen Feider has reported 0 open-market buys worth $0 and 15 open-market sells worth $2.1M, the latest filed on Sep 3, 2026.
A track record needs three past buys with six months of prices behind them; Stephen Feider has 0, so none is measured yet.
The newest scored trade: sold $128k of BBNX on Sep 2, 2026, filed Sep 3, 2026, scored 48 (moderate). In the last 12 months: 0 buys worth $0 and 7 sells worth $1.2M.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 15
$0 bought, $2.1M sold
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
BBNX: Beta Bionics, Inc.
BBNXOct 9, 2026 · close 17.63
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 |
|---|---|---|---|---|---|
| 48Moderate | Beta Bionics, Inc. | $128k 6,675 shares | -4% | +119% from low-39% from high | |
| 13Weak | Beta Bionics, Inc. | $170k 10,000 shares | -6% | +90% from low-47% from high | |
| 13Weak | Beta Bionics, Inc. | $170k 10,000 shares | -6% | +90% from low-47% from high | |
| 46Moderate | Beta Bionics, Inc. | $84k 6,676 shares | -4% | +44% from low-60% from high | |
| 37Weak | Beta Bionics, Inc. | $18k 1,428 shares | -1% | +29% from low-61% from high | |
| 24Weak | Beta Bionics, Inc. | $591k 20,000 shares | -32% | +201% from low-9% from high | |
| 43Moderate | Beta Bionics, Inc. | $42k 1,427 shares | -3% | +193% from low-10% from high | |
| 2Weak | Beta Bionics, Inc. | $108k 4,982 shares | -10% | +129% from low-16% from high | |
| 11Weak | Beta Bionics, Inc. | $312k 15,018 shares | -25% | +108% from low-23% from high | |
| 19Weak | Beta Bionics, Inc. | $209k 9,900 shares | -18% | +138% from low-3% from high | |
| 2Weak | Beta Bionics, Inc. | $2,100 100 shares | -0% | +108% from low-15% from high | |
| 42Moderate | Beta Bionics, Inc. | $28k 1,462 shares | -3% | +96% from low-20% from high | |
| 10Weak | Beta Bionics, Inc. | $75k 4,413 shares | -9% | +76% from low-28% from high | |
| 17Weak | Beta Bionics, Inc. | $95k 5,587 shares | -11% | +64% from low-33% from high | |
| 42Moderate | Beta Bionics, Inc. | $27k 1,497 shares | -3% | +92% from low-22% from high |
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 3, 2026 | BBNX BETA BIONICS, INC. | 6,675 0.01% of outstanding | $130k | Sep 2, 2026 | $255k |
| Jun 29, 2026 | BBNX Beta Bionics, Inc. | 4,896 0.01% of outstanding | $83k | Jun 29, 2026 | $172k |
| Jun 26, 2026 | BBNX Beta Bionics, Inc. | 5,104 0.01% of outstanding | $87k | Jun 26, 2026 | $85k |
| Jun 3, 2026 | BBNX BETA BIONICS, INC. | 6,676 0.01% of outstanding | $85k | Jun 2, 2026 | $18k |
| Mar 4, 2026 | BBNX BETA BIONICS, INC. | 1,428 0.00% of outstanding | $18k | Mar 2, 2026 | $633k |
| Jan 2, 2026 | BBNX Beta Bionics, Inc. | 20,000 0.05% of outstanding | $591k | Jan 2, 2026 | $108k |
| Dec 4, 2025 | BBNX BETA BIONICS, INC. | 1,427 0.00% of outstanding | $42k | Dec 2, 2025 | $659k |
| Oct 3, 2025 | BBNX Beta Bionics, Inc. | 4,982 0.01% of outstanding | $108k | Oct 3, 2025 | $600k |
| Oct 1, 2025 | BBNX Beta Bionics, Inc. | 15,018 0.03% of outstanding | $312k | Oct 1, 2025 | $288k |
| Sep 8, 2025 | BBNX Beta Bionics, Inc. | 9,900 0.02% of outstanding | $209k | Sep 8, 2025 | $199k |
| Sep 5, 2025 | BBNX Beta Bionics, Inc. | 100 0.00% of outstanding | $2,100 | Sep 5, 2025 | $197k |
| Aug 22, 2025 | BBNX Beta Bionics, Inc. | 4,413 0.01% of outstanding | $75k | Aug 22, 2025 | $122k |
| Aug 19, 2025 | BBNX Beta Bionics, Inc. | 5,587 0.01% of outstanding | $95k | Aug 19, 2025 | $27k |
Transactions
The newest 50 of 52 rows this insider has filed.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 2, 2026 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock | -6,675 | $19.11 | $128k | 159,378 | 40 d ago |
| Jun 26, 2026 | BBNX Beta Bionics, Inc. | MOption exercise Common Stock10b5-1 | +5,104 | $5.10 | $26k | 171,157 | Jul 2, 2026 |
| Jun 26, 2026 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -5,104 | $17.05 | $87k | 166,053 | Jul 2, 2026 |
| Jun 29, 2026 | BBNX Beta Bionics, Inc. | MOption exercise Common Stock10b5-1 | +4,896 | $5.10 | $25k | 170,949 | Jul 2, 2026 |
| Jun 29, 2026 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -4,896 | $17.03 | $83k | 166,053 | Jul 2, 2026 |
| Jun 26, 2026 | BBNX Beta Bionics, Inc. | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -5,104 | $0.00 | $0 | 44,591 | Jul 2, 2026 |
| Jun 29, 2026 | BBNX Beta Bionics, Inc. | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -4,896 | $0.00 | $0 | 39,695 | Jul 2, 2026 |
| Jun 26, 2026 | BBNX Beta Bionics, Inc. | MOption exercise Common Stock10b5-1 | +4,982 | $5.10 | $25k | 171,035 | Jun 30, 2026 |
| Jun 26, 2026 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -5,104 | $17.05 | $87k | 165,931 | Jun 30, 2026 |
| Jun 29, 2026 | BBNX Beta Bionics, Inc. | MOption exercise Common Stock10b5-1 | +4,896 | $5.10 | $25k | 170,827 | Jun 30, 2026 |
| Jun 29, 2026 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -4,896 | $17.03 | $83k | 165,931 | Jun 30, 2026 |
| Jun 26, 2026 | BBNX Beta Bionics, Inc. | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -4,982 | $0.00 | $0 | 44,713 | Jun 30, 2026 |
| Jun 29, 2026 | BBNX Beta Bionics, Inc. | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -4,896 | $0.00 | $0 | 39,817 | Jun 30, 2026 |
| Jun 2, 2026 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock | -6,676 | $12.61 | $84k | 166,053 | Jun 3, 2026 |
| Feb 27, 2026 | BBNX Beta Bionics, Inc. | AGrant or award Employee Stock Option (right to buy)derivative | +110,342 | $0.00 | $0 | 110,342 | Mar 13, 2026 |
| Feb 27, 2026 | BBNX Beta Bionics, Inc. | AGrant or award Common Stock | +131,543 | $0.00 | $0 | 174,157 | Mar 3, 2026 |
| Mar 2, 2026 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock | -1,428 | $12.36 | $18k | 172,729 | Mar 3, 2026 |
| Feb 27, 2026 | BBNX Beta Bionics, Inc. | AGrant or award Employee Stock Option (right to buy)derivative | +70,831 | $0.00 | $0 | 70,831 | Mar 3, 2026 |
| Jan 2, 2026 | BBNX Beta Bionics, Inc. | MOption exercise Common Stock10b5-1 | +20,000 | $5.10 | $102k | 62,614 | Jan 5, 2026 |
| Jan 2, 2026 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -20,000 | $29.53 | $591k | 42,614 | Jan 5, 2026 |
| Jan 2, 2026 | BBNX Beta Bionics, Inc. | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -20,000 | $0.00 | $0 | 49,695 | Jan 5, 2026 |
| Dec 2, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock | -1,427 | $29.34 | $42k | 42,614 | Dec 4, 2025 |
| Oct 3, 2025 | BBNX Beta Bionics, Inc. | MOption exercise Common Stock10b5-1 | +4,982 | $5.10 | $25k | 49,023 | Oct 7, 2025 |
| Oct 3, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -3,828 | $21.52 | $82k | 45,195 | Oct 7, 2025 |
| Oct 3, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -1,154 | $22.28 | $26k | 44,041 | Oct 7, 2025 |
| Oct 3, 2025 | BBNX Beta Bionics, Inc. | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -4,982 | $0.00 | $0 | 69,695 | Oct 7, 2025 |
| Oct 1, 2025 | BBNX Beta Bionics, Inc. | MOption exercise Common Stock10b5-1 | +15,018 | $5.10 | $77k | 59,059 | Oct 3, 2025 |
| Oct 1, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -14,918 | $20.76 | $310k | 44,141 | Oct 3, 2025 |
| Oct 1, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -100 | $21.08 | $2,108 | 44,041 | Oct 3, 2025 |
| Oct 1, 2025 | BBNX Beta Bionics, Inc. | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -15,018 | $0.00 | $0 | 74,677 | Oct 3, 2025 |
| Sep 8, 2025 | BBNX Beta Bionics, Inc. | MOption exercise Common Stock10b5-1 | +9,900 | $5.10 | $50k | 53,941 | Sep 9, 2025 |
| Sep 8, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -9,900 | $21.13 | $209k | 44,041 | Sep 9, 2025 |
| Sep 8, 2025 | BBNX Beta Bionics, Inc. | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -9,900 | $0.00 | $0 | 89,695 | Sep 9, 2025 |
| Sep 5, 2025 | BBNX Beta Bionics, Inc. | MOption exercise Common Stock10b5-1 | +100 | $5.10 | $510 | 44,141 | Sep 8, 2025 |
| Sep 5, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -100 | $21.00 | $2,100 | 44,041 | Sep 8, 2025 |
| Sep 5, 2025 | BBNX Beta Bionics, Inc. | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -100 | $0.00 | $0 | 99,595 | Sep 8, 2025 |
| Sep 2, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock | -1,462 | $18.86 | $28k | 44,041 | Sep 4, 2025 |
| Aug 22, 2025 | BBNX Beta Bionics, Inc. | MOption exercise Common Stock10b5-1 | +4,413 | $5.10 | $23k | 49,916 | Aug 26, 2025 |
| Aug 22, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -4,413 | $17.01 | $75k | 45,503 | Aug 26, 2025 |
| Aug 22, 2025 | BBNX Beta Bionics, Inc. | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -4,413 | $0.00 | $0 | 99,695 | Aug 26, 2025 |
| Aug 19, 2025 | BBNX Beta Bionics, Inc. | MOption exercise Common Stock10b5-1 | +5,587 | $5.10 | $28k | 51,090 | Aug 20, 2025 |
| Aug 19, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock10b5-1 | -5,587 | $17.03 | $95k | 45,503 | Aug 20, 2025 |
| Aug 19, 2025 | BBNX Beta Bionics, Inc. | MOption exercise Employee Stock Option (right to buy)derivative10b5-1 | -5,587 | $0.00 | $0 | 104,108 | Aug 20, 2025 |
| Jun 2, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock | -410 | $17.03 | $6,981 | 46,590 | Jun 4, 2025 |
| Jun 2, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock | -951 | $18.15 | $17k | 45,639 | Jun 4, 2025 |
| Jun 2, 2025 | BBNX Beta Bionics, Inc. | SOpen-market sale Common Stock | -136 | $18.69 | $2,542 | 45,503 | Jun 4, 2025 |
| Feb 27, 2025 | BBNX Beta Bionics, Inc. | AGrant or award Common Stock | +47,000 | $0.00 | $0 | 47,000 | Mar 3, 2025 |
| Feb 27, 2025 | BBNX Beta Bionics, Inc. | AGrant or award Employee Stock Option (right to buy)derivative | +71,000 | $0.00 | $0 | 71,000 | Mar 3, 2025 |
| Jan 31, 2025 | BBNX Beta Bionics, Inc. | AGrant or award Employee Stock Option (right to buy)derivative | +166,542 | $0.00 | $0 | 166,542 | Feb 3, 2025 |
| Jan 31, 2025 | BBNX Beta Bionics, Inc. | AGrant or award Employee Stock Option (right to buy)derivative | +109,695 | $0.00 | $0 | 109,695 | Feb 3, 2025 |
50 of 52 rows shown.
Questions about Stephen Feider
Answered from the filings on this page, as of the latest one.
Is Stephen Feider buying or selling?
In the last 12 months Stephen Feider reported 0 open-market buys worth $0 and 7 open-market sells worth $1.2M on SEC Form 4; the latest was sold $128k of BBNX on Sep 2, 2026. Grants, option exercises and tax withholding are not counted.
How did Stephen Feider's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Stephen Feider has 0.
Where does Stephen Feider file Form 4?
Stephen Feider has filed Form 4 at BBNX (Beta Bionics, Inc.) as Chief Financial 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.