Insider · CIK 0001870278
Michael Alexander Smith
officer
Files at INSM (INSMED Inc). First filing Jan 10, 2025, latest Jun 24, 2026.
Michael Alexander Smith files SEC Form 4 as officer at INSM (INSMED Inc). Since Jan 10, 2025, Michael Alexander Smith has reported 0 open-market buys worth $0 and 17 open-market sells worth $22M, the latest filed on Jun 24, 2026.
A track record needs three past buys with six months of prices behind them; Michael Alexander Smith has 0, so none is measured yet.
The newest scored trade: sold $173k of INSM on Jun 22, 2026, filed Jun 24, 2026, scored 14 (weak), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 9 sells worth $14M.
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 / 17
$0 bought, $22M 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.
INSM: INSMED Inc
INSMOct 9, 2026 · close 100.60
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 |
|---|---|---|---|---|---|
| 14Weak | INSMED Inc | $173k 1,806 shares | -5% | +7% from low-53% from high | |
| 42Moderate | INSMED Inc | $221k 2,159 shares | -5% | +47% from low-51% from high | |
| 35Weak | INSMED Inc | $667k 6,149 shares | -13% | +61% from low-50% from high | |
| 48Moderate | INSMED Inc | $477k 4,109 shares | -8% | +80% from low-44% from high | |
| 30Weak | INSMED Inc | $3.0M 19,638 shares | -27% | +137% from low-27% from high | |
| 23Weak | INSMED Inc | $3.9M 24,774 shares | -32% | +145% from low-25% from high | |
| 40Moderate | INSMED Inc | $100k 640 shares | -1% | +142% from low-26% from high | |
| 49Moderate | INSMED Inc | $549k 3,158 shares | -5% | +170% from low-17% from high | |
| 30Weak | INSMED Inc | $5.0M 27,130 shares | -33% | +187% from low-4% from high | |
| 30Weak | INSMED Inc | $3.5M 24,272 shares | -31% | +124% from low0% from high | |
| 21Weak | INSMED Inc | $168k 1,681 shares | -2% | +51% from low-7% from high | |
| 21Weak | INSMED Inc | $138k 1,879 shares | -3% | +12% from low-13% from high | |
| 40Moderate | INSMED Inc | $104k 1,448 shares | -2% | +13% from low-13% from high | |
| 45Moderate | INSMED Inc | $1.8M 26,327 shares | -27% | +8% from low-17% from high | |
| 45Moderate | INSMED Inc | $326k 4,816 shares | -5% | +1% from low-22% from high | |
| 60Notable | INSMED Inc | $1.7M 20,650 shares | -18% | - | |
| 43Moderate | INSMED Inc | $243k 3,689 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 22, 2026 | INSM INSMED INC | 1,806 0.00% of outstanding | $173k | Jun 22, 2026 | $4.3M |
| Jun 3, 2026 | INSM INSMED INC | 2,159 0.00% of outstanding | $221k | Jun 3, 2026 | $4.1M |
| May 22, 2026 | INSM INSMED INCORPORATED | 6,149 0.00% of outstanding | $667k | May 22, 2026 | $7.3M |
| May 13, 2026 | INSM INSMED INC | 4,109 0.00% of outstanding | $477k | May 13, 2026 | $6.8M |
| Mar 30, 2026 | INSM INSMED INC | 19,638 0.01% of outstanding | $3.0M | Mar 30, 2026 | $4.5M |
| Feb 24, 2026 | INSM INSMED INCORPORATED | 24,774 0.01% of outstanding | $3.9M | Feb 24, 2026 | $650k |
| Feb 3, 2026 | INSM INSMED INC | 640 0.00% of outstanding | $100k | Feb 3, 2026 | $5.5M |
| Jan 8, 2026 | INSM INSMED INC | 1,053 0.00% of outstanding | $183k | Jan 8, 2026 | $5.4M |
| Jan 7, 2026 | INSM INSMED INC | 709 0.00% of outstanding | $124k | Jan 7, 2026 | $5.2M |
| Jan 6, 2026 | INSM INSMED INC | 1,396 0.00% of outstanding | $242k | Jan 6, 2026 | $5.0M |
| Nov 3, 2025 | INSM Insmed Inc | 27,130 0.01% of outstanding | $5.0M | Nov 3, 2025 | $3.5M |
| Sep 2, 2025 | INSM INSMED Inc | 24,272 0.01% of outstanding | $3.5M | Sep 2, 2025 | $409k |
| Jul 15, 2025 | INSM INSMED Inc | 933 0.00% of outstanding | $96k | Jul 15, 2025 | $2.5M |
| Jul 11, 2025 | INSM INSMED Inc | 748 0.00% of outstanding | $72k | Jul 11, 2025 | $2.4M |
| Jun 5, 2025 | INSM INSMED Inc | 1,879 0.00% of outstanding | $138k | Jun 5, 2025 | $2.3M |
| Jun 3, 2025 | INSM INSMED Inc | 1,448 0.00% of outstanding | $104k | Jun 3, 2025 | $2.2M |
| May 30, 2025 | INSM INSMED Inc | 26,327 0.01% of outstanding | $1.8M | May 30, 2025 | $326k |
| May 14, 2025 | INSM INSMED Inc | 409 0.00% of outstanding | $27k | May 14, 2025 | $299k |
| May 13, 2025 | INSM INSMED Inc | 4,407 0.00% of outstanding | $299k | May 13, 2025 | none |
| Feb 6, 2025 | INSM INSMED Inc | 21,000 0.01% of outstanding | $1.7M | Feb 6, 2025 | $243k |
| Jan 10, 2025 | INSM INSMED Inc | 319 0.00% of outstanding | $20k | Jan 10, 2025 | $223k |
| Jan 8, 2025 | INSM INSMED Inc | 1,064 0.00% of outstanding | $70k | Jan 8, 2025 | $152k |
| Jan 7, 2025 | INSM INSMED Inc | 2,306 0.00% of outstanding | $152k | Jan 7, 2025 | none |
Transactions
The newest 50 of 55 rows this insider has filed.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 22, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -1,806 | $95.82 | $173k | 37,648 | Jun 24, 2026 |
| Jun 3, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock | -2,159 | $102.27 | $221k | 39,454 | Jun 5, 2026 |
| May 22, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -6,149 | $108.47 | $667k | 41,613 | May 22, 2026 |
| May 13, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock | -4,109 | $116.18 | $477k | 47,762 | May 15, 2026 |
| Mar 30, 2026 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +5,649 | $17.07 | $96k | 57,520 | Mar 31, 2026 |
| Mar 30, 2026 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +13,989 | $27.89 | $390k | 71,509 | Mar 31, 2026 |
| Mar 30, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -19,638 | $150.98 | $3.0M | 51,871 | Mar 31, 2026 |
| Mar 30, 2026 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -5,649 | $0.00 | $0 | 8,633 | Mar 31, 2026 |
| Mar 30, 2026 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -13,989 | $0.00 | $0 | 18,561 | Mar 31, 2026 |
| Feb 24, 2026 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +20,248 | $17.07 | $346k | 76,645 | Feb 25, 2026 |
| Feb 24, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -4,852 | $153.93 | $747k | 71,793 | Feb 25, 2026 |
| Feb 24, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -4,151 | $155.06 | $644k | 67,642 | Feb 25, 2026 |
| Feb 24, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -15,771 | $156.53 | $2.5M | 51,871 | Feb 25, 2026 |
| Feb 24, 2026 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -20,248 | $0.00 | $0 | 14,282 | Feb 25, 2026 |
| Feb 3, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock | -640 | $156.27 | $100k | 56,397 | Feb 4, 2026 |
| Jan 6, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock | -1,396 | $173.33 | $242k | 58,799 | Jan 8, 2026 |
| Jan 7, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock | -709 | $175.07 | $124k | 58,090 | Jan 8, 2026 |
| Jan 8, 2026 | INSM INSMED Inc | SOpen-market sale Common Stock | -1,053 | $174.17 | $183k | 57,037 | Jan 8, 2026 |
| Jan 2, 2026 | INSM INSMED Inc | AGrant or award Common Stock | +5,293 | - | - | 60,195 | Jan 6, 2026 |
| Jan 2, 2026 | INSM INSMED Inc | AGrant or award Stock Option (right to buy)derivative | +27,600 | $0.00 | $0 | 27,600 | Jan 6, 2026 |
| Nov 3, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +27,130 | $23.75 | $644k | 82,032 | Nov 5, 2025 |
| Nov 3, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -1,342 | $181.01 | $243k | 80,690 | Nov 5, 2025 |
| Nov 3, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -7,619 | $181.88 | $1.4M | 73,071 | Nov 5, 2025 |
| Nov 3, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -4,286 | $182.60 | $783k | 68,785 | Nov 5, 2025 |
| Nov 3, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -4,032 | $183.92 | $742k | 64,753 | Nov 5, 2025 |
| Nov 3, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -3,243 | $184.91 | $600k | 61,510 | Nov 5, 2025 |
| Nov 3, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -3,636 | $185.93 | $676k | 57,874 | Nov 5, 2025 |
| Nov 3, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -1,572 | $187.15 | $294k | 56,302 | Nov 5, 2025 |
| Nov 3, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -1,400 | $187.97 | $263k | 54,902 | Nov 5, 2025 |
| Nov 3, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -27,130 | $0.00 | $0 | 0 | Nov 5, 2025 |
| Sep 2, 2025 | INSM INSMED Inc | MOption exercise Common Stock10b5-1 | +12,780 | $30.46 | $389k | 79,174 | Sep 4, 2025 |
| Sep 2, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -1,354 | $141.16 | $191k | 77,820 | Sep 4, 2025 |
| Sep 2, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -1,100 | $142.06 | $156k | 76,720 | Sep 4, 2025 |
| Sep 2, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -7,391 | $143.16 | $1.1M | 69,329 | Sep 4, 2025 |
| Sep 2, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -8,300 | $144.16 | $1.2M | 61,029 | Sep 4, 2025 |
| Sep 2, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -4,944 | $145.18 | $718k | 56,085 | Sep 4, 2025 |
| Sep 2, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -1,183 | $145.89 | $173k | 54,902 | Sep 4, 2025 |
| Sep 2, 2025 | INSM INSMED Inc | MOption exercise Stock Option (right to buy)derivative10b5-1 | -12,780 | $0.00 | $0 | 0 | Sep 4, 2025 |
| Jul 11, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -748 | $96.41 | $72k | 67,327 | Jul 15, 2025 |
| Jul 15, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -933 | $102.51 | $96k | 66,394 | Jul 15, 2025 |
| Jun 5, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -1,879 | $73.50 | $138k | 67,718 | Jun 6, 2025 |
| Jun 3, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock | -1,448 | $71.50 | $104k | 69,597 | Jun 4, 2025 |
| May 30, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -6,327 | $68.56 | $434k | 91,045 | Jun 3, 2025 |
| May 30, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock10b5-1 | -20,000 | $70.00 | $1.4M | 71,045 | Jun 3, 2025 |
| May 15, 2025 | INSM INSMED Inc | AGrant or award Common Stock | +5,578 | $0.00 | $0 | 97,372 | May 19, 2025 |
| May 15, 2025 | INSM INSMED Inc | AGrant or award Stock Option (right to buy)derivative | +27,100 | $0.00 | $0 | 27,100 | May 19, 2025 |
| May 13, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock | -4,407 | $67.81 | $299k | 92,203 | May 15, 2025 |
| May 14, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock | -409 | $65.61 | $27k | 91,794 | May 15, 2025 |
| Feb 5, 2025 | INSM INSMED Inc | AGrant or award Common Stock | +47,295 | $0.00 | $0 | 117,260 | Feb 7, 2025 |
| Feb 6, 2025 | INSM INSMED Inc | SOpen-market sale Common Stock | -20,650 | $80.90 | $1.7M | 96,610 | Feb 7, 2025 |
50 of 55 rows shown.
Questions about Michael Alexander Smith
Answered from the filings on this page, as of the latest one.
Is Michael Alexander Smith buying or selling?
In the last 12 months Michael Alexander Smith reported 0 open-market buys worth $0 and 9 open-market sells worth $14M on SEC Form 4; the latest was sold $173k of INSM on Jun 22, 2026. Grants, option exercises and tax withholding are not counted.
How did Michael Alexander Smith's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Michael Alexander Smith has 0.
Where does Michael Alexander Smith file Form 4?
Michael Alexander Smith has filed Form 4 at INSM (INSMED Inc) as Chief Legal 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.