Insider · CIK 0001604019
Sara Bonstein
Files at INSM (INSMED Inc), SCPH (scPharmaceuticals Inc.), XLO (Xilio Therapeutics, Inc.). First filing Jan 10, 2025, latest Jun 5, 2026.
In brief
Sara Bonstein files SEC Form 4 as CFO and director at INSM (INSMED Inc), and also at SCPH (scPharmaceuticals Inc.), XLO (Xilio Therapeutics, Inc.). Since Jan 10, 2025, Sara Bonstein has reported 0 open-market buys worth $0 and 14 open-market sells worth $31M, the latest filed on Jun 5, 2026.
A track record needs three past buys with six months of prices behind them; Sara Bonstein has 0, so none is measured yet.
The newest scored trade: sold $246k of INSM on Jun 3, 2026, filed Jun 5, 2026, scored 50 (moderate). In the last 12 months: 0 buys worth $0 and 4 sells worth $2.1M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
INSM: INSMED 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 |
|---|---|---|---|---|---|
| 50Moderate | INSMED Inc | $246k 2,404 shares | -3% | +47% from low-51% from high | |
| 66Notable | INSMED Inc | $961k 8,272 shares | -10% | +80% from low-44% from high | |
| 47Moderate | INSMED Inc | $117k 748 shares | -1% | +142% from low-26% from high | |
| 59Moderate | INSMED Inc | $809k 4,642 shares | -5% | +170% from low-17% from high | |
| 37Weak | INSMED Inc | $6.0M 58,400 shares | -44% | +59% from low-3% from high | |
| 37Weak | INSMED Inc | $5.5M 57,764 shares | -41% | +50% from low-8% from high | |
| 37Weak | INSMED Inc | $5.9M 57,765 shares | -38% | +63% from low0% from high | |
| 37Weak | INSMED Inc | $5.1M 57,766 shares | -36% | +40% from low0% from high | |
| 47Moderate | INSMED Inc | $113k 1,579 shares | -1% | +13% from low-13% from high | |
| 58Moderate | INSMED Inc | $709k 10,504 shares | -9% | +1% from low-22% from high | |
| 47Moderate | INSMED Inc | $1.5M 18,322 shares | -13% | - | |
| 47Moderate | INSMED Inc | $1.5M 18,321 shares | -12% | - | |
| 67Notable | INSMED Inc | $2.3M 28,390 shares | -15% | - | |
| 53Moderate | INSMED Inc | $393k 6,000 shares | -5% | - |
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 |
|---|---|---|---|---|---|
| Jun 3, 2026 | INSM INSMED INCORPORATED | 2,404 0.00% of outstanding | $246k | Jun 3, 2026 | $961k |
| May 13, 2026 | INSM INSMED INCORPORATED | 8,272 0.00% of outstanding | $961k | May 13, 2026 | none |
| Feb 3, 2026 | INSM INSMED INCORPORATED | 748 0.00% of outstanding | $117k | Feb 3, 2026 | $809k |
| Jan 8, 2026 | INSM INSMED INC | 1,447 0.00% of outstanding | $252k | Jan 8, 2026 | $557k |
| Jan 7, 2026 | INSM INSMED INC | 1,678 0.00% of outstanding | $294k | Jan 7, 2026 | $263k |
| Jan 6, 2026 | INSM INSMED INC | 1,517 0.00% of outstanding | $263k | Jan 6, 2026 | none |
| Jul 21, 2025 | INSM INSMED Inc | 58,400 0.03% of outstanding | $6.0M | Jul 21, 2025 | $17M |
| Jul 7, 2025 | INSM INSMED Inc | 57,764 0.03% of outstanding | $5.5M | Jul 7, 2025 | $12M |
| Jun 23, 2025 | INSM INSMED Inc | 57,765 0.03% of outstanding | $5.9M | Jun 23, 2025 | $6.0M |
| Jun 10, 2025 | INSM INSMED Inc | 57,766 0.03% of outstanding | $5.1M | Jun 10, 2025 | $822k |
| Jun 3, 2025 | INSM INSMED Inc | 1,579 0.00% of outstanding | $113k | Jun 3, 2025 | $709k |
| May 14, 2025 | INSM INSMED Inc | 1,634 0.00% of outstanding | $107k | May 14, 2025 | $2.1M |
| May 13, 2025 | INSM INSMED Inc | 8,870 0.00% of outstanding | $601k | May 13, 2025 | $1.9M |
| Feb 11, 2025 | INSM INSMED Inc | 36,643 0.02% of outstanding | $2.9M | Feb 11, 2025 | $2.7M |
| Feb 6, 2025 | INSM INSMED Inc | 29,000 0.02% of outstanding | $2.3M | Feb 6, 2025 | $393k |
| Jan 10, 2025 | INSM INSMED Inc | 1,066 0.00% of outstanding | $68k | Jan 10, 2025 | $325k |
| Jan 8, 2025 | INSM INSMED Inc | 1,464 0.00% of outstanding | $97k | Jan 8, 2025 | $228k |
| Jan 7, 2025 | INSM INSMED Inc | 3,470 0.00% of outstanding | $229k | Jan 7, 2025 | none |
Transactions
The newest 50 of 67 rows this insider has filed.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 11, 2026 | XLO Xilio Therapeutics, Inc. | AGrant or award Stock Option (right to buy)derivative | +5,000 | $0.00 | $0 | 5,000 | Jun 12, 2026 |
| Jun 3, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock | -2,404 | $102.27 | $246k | 69,082 | Jun 5, 2026 |
| May 13, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock | -8,272 | $116.18 | $961k | 71,486 | May 15, 2026 |
| Feb 3, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock | -748 | $156.34 | $117k | 79,758 | Feb 4, 2026 |
| Jan 6, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock | -1,517 | $173.33 | $263k | 83,631 | Jan 8, 2026 |
| Jan 7, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock | -1,678 | $175.07 | $294k | 81,953 | Jan 8, 2026 |
| Jan 8, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock | -1,447 | $174.17 | $252k | 80,506 | Jan 8, 2026 |
| Jan 2, 2026 | INSM INSMED Inc | AGrant or award Common Stock | +5,998 | - | - | 79,503 | Jan 6, 2026 |
| Jan 2, 2026 | INSM INSMED Inc | AGrant or award Common Stock | +5,645 | - | - | 85,148 | Jan 6, 2026 |
| Jan 2, 2026 | INSM INSMED Inc | AGrant or award Stock Option (right to buy)derivative | +31,280 | $0.00 | $0 | 31,280 | Jan 6, 2026 |
| Oct 7, 2025 | SCPH scPharmaceuticals Inc. | DDisposition to issuer Stock Option (Right to Buy)derivative | -30,000 | $0.00 | $0 | 0 | Oct 7, 2025 |
| Oct 7, 2025 | SCPH scPharmaceuticals Inc. | DDisposition to issuer Stock Option (Right to Buy)derivative | -19,750 | $0.00 | $0 | 0 | Oct 7, 2025 |
| Oct 7, 2025 | SCPH scPharmaceuticals Inc. | DDisposition to issuer Stock Option (Right to Buy)derivative | -16,300 | $0.00 | $0 | 0 | Oct 7, 2025 |
| Jul 21, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +3,443 | $26.46 | $91k | 87,460 | Jul 23, 2025 |
| Jul 21, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +11,455 | $28.88 | $331k | 98,915 | Jul 23, 2025 |
| Jul 21, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +15,890 | $29.13 | $463k | 114,805 | Jul 23, 2025 |
| Jul 21, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +17,100 | $34.03 | $582k | 131,905 | Jul 23, 2025 |
| Jul 21, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -32,090 | $102.38 | $3.3M | 99,815 | Jul 23, 2025 |
| Jul 21, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -26,310 | $103.03 | $2.7M | 73,505 | Jul 23, 2025 |
| Jul 21, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -3,443 | $0.00 | $0 | 8,580 | Jul 23, 2025 |
| Jul 21, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -11,455 | $0.00 | $0 | 0 | Jul 23, 2025 |
| Jul 21, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -15,890 | $0.00 | $0 | 47,670 | Jul 23, 2025 |
| Jul 21, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -17,100 | $0.00 | $0 | 0 | Jul 23, 2025 |
| Jul 7, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +6,244 | $19.74 | $123k | 100,137 | Jul 9, 2025 |
| Jul 7, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +4,362 | $24.70 | $108k | 104,499 | Jul 9, 2025 |
| Jul 7, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +23,565 | $26.43 | $623k | 128,064 | Jul 9, 2025 |
| Jul 7, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +13,717 | $26.46 | $363k | 141,781 | Jul 9, 2025 |
| Jul 7, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -35,583 | $95.66 | $3.4M | 106,198 | Jul 9, 2025 |
| Jul 7, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -22,181 | $96.19 | $2.1M | 84,017 | Jul 9, 2025 |
| Jul 7, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -6,244 | $0.00 | $0 | 18,880 | Jul 9, 2025 |
| Jul 7, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -4,362 | $0.00 | $0 | 0 | Jul 9, 2025 |
| Jul 7, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -23,565 | $0.00 | $0 | 15,710 | Jul 9, 2025 |
| Jul 7, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -13,717 | $0.00 | $0 | 12,023 | Jul 9, 2025 |
| Jun 23, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +35,253 | $18.95 | $668k | 138,665 | Jun 25, 2025 |
| Jun 23, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +12,636 | $19.74 | $249k | 151,301 | Jun 25, 2025 |
| Jun 23, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -49,104 | $101.71 | $5.0M | 102,197 | Jun 25, 2025 |
| Jun 23, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -8,661 | $102.15 | $885k | 93,536 | Jun 25, 2025 |
| Jun 23, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -35,253 | $0.00 | $0 | 99,007 | Jun 25, 2025 |
| Jun 23, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -12,636 | $0.00 | $0 | 25,124 | Jun 25, 2025 |
| Jun 11, 2025 | XLO Xilio Therapeutics, Inc. | AGrant or award Stock Option (right to buy)derivative | +31,000 | $0.00 | $0 | 31,000 | Jun 12, 2025 |
| Jun 10, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +24,150 | $18.95 | $458k | 137,438 | Jun 12, 2025 |
| Jun 10, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +23,740 | $17.07 | $405k | 161,178 | Jun 12, 2025 |
| Jun 10, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -7,277 | $87.12 | $634k | 153,901 | Jun 12, 2025 |
| Jun 10, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -7,310 | $88.29 | $645k | 146,591 | Jun 12, 2025 |
| Jun 10, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -20,926 | $88.99 | $1.9M | 125,665 | Jun 12, 2025 |
| Jun 10, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -15,825 | $89.85 | $1.4M | 109,840 | Jun 12, 2025 |
| Jun 10, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -6,328 | $90.93 | $575k | 103,512 | Jun 12, 2025 |
| Jun 10, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -100 | $91.66 | $9,166 | 103,412 | Jun 12, 2025 |
| Jun 10, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -24,150 | $0.00 | $0 | 134,260 | Jun 12, 2025 |
| Jun 10, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -23,740 | $0.00 | $0 | 35,610 | Jun 12, 2025 |
Questions about Sara Bonstein
Answered from the filings on this page, as of the latest one.
Is Sara Bonstein buying or selling?
In the last 12 months Sara Bonstein reported 0 open-market buys worth $0 and 4 open-market sells worth $2.1M on SEC Form 4; the latest was sold $246k of INSM on Jun 3, 2026. Grants, option exercises and tax withholding are not counted.
How did Sara Bonstein's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Sara Bonstein has 0.
Where does Sara Bonstein file Form 4?
Sara Bonstein has filed Form 4 at INSM (INSMED Inc) as Chief Financial Officer; SCPH (scPharmaceuticals Inc.); XLO (Xilio Therapeutics, Inc.). 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.