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Amylyx Pharmaceuticals, Inc. (NASDAQ:AMLX)
US · Delayed Price · Currency is USD
Healthcare · Biotechnology
27.09-0.11 (-0.40%)
Insider Score
––Not scored
AMLX Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
AMLX Stock Insider Trading Activity
AMLX stock’s insider trading shows 1 purchase for an estimated $51.34K and 13 sales on the open market for an estimated $4.31M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| MILNE GEORGE M JR Director | Sell | 30,000 | $27.70 | $830.90K | 3.7% | 782,881 | Oct 5, 2026 | — | Form 4 |
| Klee Justin B. CEO | Sell | 1,439 | $33.16 | $47.71K | 0.0% | 3,613,056 | Sep 10, 2026 | — | Form 4 |
| Cohen Joshua B CEO | Sell | 29,545 | $32.16 | $950.04K | 0.8% | 3,614,042 | Sep 10, 2026 | — | Form 4 |
| Cohen Joshua B CEO | Sell | 919 | $33.15 | $30.46K | 0.0% | 3,613,123 | Sep 10, 2026 | — | Form 4 |
| Klee Justin B. CEO | Sell | 29,025 | $32.13 | $932.55K | 0.8% | 3,614,495 | Sep 10, 2026 | — | Form 4 |
| Mazzariello Gina Other | Sell | 9,525 | $32.46 | $309.14K | 4.8% | 190,849 | Sep 10, 2026 | — | Form 4 |
| Mazzariello Gina Other | Sell | 11 | $33.34 | $366.74 | 0.0% | 190,838 | Sep 10, 2026 | — | Form 4 |
| Bedrosian Camille L Other | Sell | 7,947 | $32.21 | $256.00K | 2.8% | 280,145 | Sep 10, 2026 | — | Form 4 |
| Bedrosian Camille L Other | Sell | 2,081 | $33.09 | $68.86K | 0.7% | 278,064 | Sep 10, 2026 | — | Form 4 |
| FRATES JAMES M CFO | Sell | 9,768 | $32.27 | $315.19K | 4.0% | 234,667 | Sep 10, 2026 | — | Form 4 |
| FRATES JAMES M CFO | Sell | 1,042 | $33.23 | $34.63K | 0.4% | 233,625 | Sep 10, 2026 | — | Form 4 |
| Firestone Karen Director | Option exercise | 25,000 | $1.76 | $44.00K | 37.4% | 91,900 | Aug 31, 2026 | — | Form 4 |
| Firestone Karen Director | Option exercise | 25,000 | $5.05 | $126.25K | 27.2% | 116,900 | Aug 31, 2026 | — | Form 4 |
| FRATES JAMES M CFO | Award | 22,807 | — | — | 10.3% | 244,435 | Aug 18, 2026 | — | Form 4 |
| Klee Justin B. CEO | Award | 60,039 | — | — | 1.7% | 3,643,520 | Aug 18, 2026 | — | Form 4 |
| Mazzariello Gina Other | Award | 21,284 | — | — | 11.9% | 200,374 | Aug 18, 2026 | — | Form 4 |
| Bedrosian Camille L Other | Award | 22,807 | — | — | 8.6% | 288,092 | Aug 18, 2026 | — | Form 4 |
| Cohen Joshua B CEO | Award | 60,039 | — | — | 1.7% | 3,643,587 | Aug 18, 2026 | — | Form 4 |
| Mazzariello Gina Other | Sell | 15,000 | $17.61 | $264.12K | 7.7% | 179,090 | Jul 10, 2026 | — | Form 4 |
| Mazzariello Gina Other | Sell | 15,000 | $18.32 | $274.75K | 7.2% | 194,090 | Jul 9, 2026 | — | Form 4 |
| Firestone Karen Director | Buy | 3,800 | $13.51 | $51.34K | 6.0% | 66,900 | May 21, 2026 | DDilution | Form 4 |
| Klee Justin B. CEO | Award | 248,865 | — | — | 7.5% | 3,583,481 | Mar 5, 2026 | — | Form 4 |
| Bedrosian Camille L Other | Award | 95,990 | — | — | 56.7% | 265,285 | Mar 5, 2026 | — | Form 4 |
| Mazzariello Gina Other | Award | 74,660 | — | — | 55.5% | 209,090 | Mar 5, 2026 | — | Form 4 |
| FRATES JAMES M CFO | Award | 95,990 | — | — | 58.0% | 261,628 | Mar 5, 2026 | — | Form 4 |
| Cohen Joshua B CEO | Award | 248,865 | — | — | 7.5% | 3,583,548 | Mar 5, 2026 | — | Form 4 |
| Cohen Joshua B CEO | Sell | 29,282 | $14.48 | $424.00K | 0.9% | 3,334,683 | Mar 2, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Buy (P) — Open-market or private purchase
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
- Option exercise (M) — Exercise or conversion of an exempt derivative
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.