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Amylyx Pharmaceuticals, Inc.

AMLX Net selling
CIK 0001658551 #1444 in the set updated 17 Sep 2026
Bought (12 mo)
$152.18K
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$10.62M
$538.87K on a plan · $3.76M straight out of an exercise
Sold at will
$6.33M
31 of 37 sales
Net
−$10.47M
−$6.18M against sales at will

By person

8 insiders · 41 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Klee Justin B.
Co-Chief Executive Officer
—
$4.03M (9)
−$4.03M
3,613,056
3.24%
$119.77M
+15.1%
Cohen Joshua B
Co-Chief Executive Officer
—
$4.03M (9)
−$4.03M
3,613,123
3.24%
$119.77M
+11.6%
Mazzariello Gina
Chief Legal Officer
—
$1.18M (8)
−$1.18M
190,838
0.1713%
$6.33M
+26.0%
FRATES JAMES M
Chief Financial Officer
—
$708.37K (6)
−$708.37K
273,625
0.2456%
$9.07M
+105.0%
Bedrosian Camille L
Chief Medical Officer
—
$689.01K (5)
−$689.01K
278,064
0.2496%
$9.22M
+79.1%
Firestone Karen
Director
$152.18K (2)
—
+$152.18K
116,900
0.1049%
$3.88M
+112.5%
MILNE GEORGE M JR
Director
—
—
—
812,881
0.7295%
$26.95M
−5.3%
Zeiher Bernhardt G
Director
—
—
—
10,000
0.0090%
$331.49K
—

Individual transactions

41
Insider
Date
Role
Action
Shares
Price
Amount
Cohen Joshua B
10 Sep 2026
Co-Chief Executive Officer
Sell
919
$33.15
$30.46K
Cohen Joshua B
10 Sep 2026
Co-Chief Executive Officer
Sell
29,545
$32.16
$950.04K
Klee Justin B.
10 Sep 2026
Co-Chief Executive Officer
Sell
1,439
$33.16
$47.71K
Klee Justin B.
10 Sep 2026
Co-Chief Executive Officer
Sell
29,025
$32.13
$932.55K
Mazzariello Gina
10 Sep 2026
Chief Legal Officer
Sell
11
$33.34
$366.74
Mazzariello Gina
10 Sep 2026
Chief Legal Officer
Sell
9,525
$32.46
$309.14K
FRATES JAMES M
10 Sep 2026
Chief Financial Officer
Sell
1,042
$33.23
$34.63K
FRATES JAMES M
10 Sep 2026
Chief Financial Officer
Sell
9,768
$32.27
$315.19K
Bedrosian Camille L
10 Sep 2026
Chief Medical Officer
Sell
2,081
$33.09
$68.86K
Bedrosian Camille L
10 Sep 2026
Chief Medical Officer
Sell
7,947
$32.21
$256.00K
Firestone Karen
31 Aug 2026
Director
Exercised, kept
25,000
$5.05
$126.25K
Firestone Karen
31 Aug 2026
Director
Exercised, kept
25,000
$1.76
$44.00K
Mazzariello Gina
10 Jul 2026
Chief Legal Officer
Sold on a plan
15,000
$17.61
$264.12K
Mazzariello Gina
9 Jul 2026
Chief Legal Officer
Sold on a plan
15,000
$18.32
$274.75K
Firestone Karen
21 May 2026
Director
Buy
3,800
$13.51
$51.34K
Mazzariello Gina
2 Mar 2026
Chief Legal Officer
Sell
6,844
$14.52
$99.38K
FRATES JAMES M
2 Mar 2026
Chief Financial Officer
Sell
7,909
$14.52
$114.85K
Bedrosian Camille L
2 Mar 2026
Chief Medical Officer
Sell
6,461
$14.58
$94.21K
Cohen Joshua B
2 Mar 2026
Co-Chief Executive Officer
Sell
29,282
$14.48
$424.12K
Klee Justin B.
2 Mar 2026
Co-Chief Executive Officer
Sell
29,282
$14.47
$423.76K
Mazzariello Gina
23 Feb 2026
Chief Legal Officer
Sell
3,419
$14.14
$48.35K
Klee Justin B.
2 Feb 2026
Co-Chief Executive Officer
Sell
15,500
$14.69
$227.62K
Mazzariello Gina
2 Feb 2026
Chief Legal Officer
Sell
3,448
$14.65
$50.52K
Cohen Joshua B
2 Feb 2026
Co-Chief Executive Officer
Sell
15,500
$14.68
$227.59K
FRATES JAMES M
2 Feb 2026
Chief Financial Officer
Sell
3,557
$14.65
$52.10K
Klee Justin B.
16 Jan 2026
Co-Chief Executive Officer
Sold after exercise
1,995
$13.89
$27.70K
Cohen Joshua B
16 Jan 2026
Co-Chief Executive Officer
Sold after exercise
1,974
$13.83
$27.30K
Klee Justin B.
15 Jan 2026
Co-Chief Executive Officer
Sold after exercise
136,193
$13.58
$1.85M
Cohen Joshua B
15 Jan 2026
Co-Chief Executive Officer
Sold after exercise
136,193
$13.59
$1.85M
Klee Justin B.
6 Jan 2026
Co-Chief Executive Officer
Sell
7,715
$11.09
$85.59K
Cohen Joshua B
6 Jan 2026
Co-Chief Executive Officer
Sell
7,715
$11.09
$85.60K
FRATES JAMES M
6 Jan 2026
Chief Financial Officer
Sell
3,326
$11.11
$36.95K
Firestone Karen
23 Dec 2025
Director
Buy
8,100
$12.45
$100.85K
Bedrosian Camille L
1 Dec 2025
Chief Medical Officer
Sell
6,580
$14.35
$94.42K
Bedrosian Camille L
30 Sep 2025
Chief Medical Officer
Sell
12,039
$14.58
$175.52K
Cohen Joshua B
30 Sep 2025
Co-Chief Executive Officer
Sell
200
$15.00
$3.00K
Cohen Joshua B
30 Sep 2025
Co-Chief Executive Officer
Sell
29,733
$14.34
$426.47K
FRATES JAMES M
30 Sep 2025
Chief Financial Officer
Sell
10,558
$14.65
$154.65K
Mazzariello Gina
30 Sep 2025
Chief Legal Officer
Sell
8,828
$14.58
$128.67K
Klee Justin B.
30 Sep 2025
Co-Chief Executive Officer
Sell
200
$15.01
$3.00K
Klee Justin B.
30 Sep 2025
Co-Chief Executive Officer
Sell
29,775
$14.37
$427.95K

What was left out

Form 4 filings counted 46
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 2
Sales straight out of an exercise 4
Sales at will 31
Transactions with no price 0
Shares from compensation/vesting 1,419,126
History held since 10 Jan 2022