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HYPERION DEFI, INC.

HYPD Net buying
CIK 0001682639 #4713 in the set updated 19 Sep 2026
Bought (120 mo)
$18.24M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$1.28M
$1.28M on a plan · $0.00 straight out of an exercise
Sold at will
$0.00
0 of 5 sales
Net
+$16.97M
+$18.24M against sales at will

By person

24 insiders · 134 transactions

There is no salary here to measure against. HYPERION DEFI, INC.'s chief executive is paid a token, so dividing a holding by it says nothing.

Which is why this company is in neither direction of the chief executive filter on the transactions page. A stake that cannot be expressed as a multiple is not the same thing as a small one.

Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Grant Stuart M.
10% owner
$9.46M (58)
+$9.46M
10,914,153
$40.16M
+76.9%
ESHELMAN FREDRIC N
Director
$3.35M (1)
+$3.35M
1,618,835
$5.96M
+28.7%
MARIO ERNEST
Director
$1.19M (3)
+$1.19M
382,706
$1.41M
+258.5%
Senju Pharmaceutical Co., Ltd. entity
10% owner
$1.00M (1)
+$1.00M
1,718,566
$6.32M
+6.2%
Yoshida Shuhei
Director
$1.00M (1)
+$1.00M
1,751,900
$6.45M
+8.2%
Strahlman Ellen R
Director
$309.66K (12)
+$309.66K
184,947
$680.60K
Walters Happy David
Director
$187.15K (1)
+$187.15K
170,847
$628.72K
Ianchulev Tsontcho
Director
$1.10M (5)
$1.28M (5) scheduled
−$176.90K
622,791
$2.29M
+18.9%
LaBelle Curt H
Director
$150.00K (2)
+$150.00K
648,903
$2.39M
−29.5%
Knox David R.
Chief Financial Officer
$100.34K (1)
+$100.34K
307,119
$1.13M
MATHER CHARLES E IV
Director
$96.44K (8)
+$96.44K
9,953
$36.63K
Rowe Michael M
Chief Executive Officer
$90.87K (12)
+$90.87K
7,975
$29.35K
GELTZEILER MICHAEL S
Director
$90.21K (1)
+$90.21K
146,932
$540.71K
LEE KENNETH B JR
Director
$54.51K (4)
+$54.51K
64,544
$237.52K
GANDOLFO JOHN P
Chief Financial Officer
$30.90K (3)
+$30.90K
8,000
$29.44K
Jung Hyunsu
See Remarks
$29.58K (4)
+$29.58K
1,345,676
$4.95M
Kern Bren
Chief Operating Officer
$6.83K (1)
+$6.83K
50,031
$184.11K
JACOBSON RACHEL
Director
115,218
$424.00K
Rubenstein Robert
General Counsel
75,000
$276.00K
Clasby Jennifer G
VP, Regulatory and Clinical
65,950
$242.70K
Haller Julia A
Director
30,408
$111.90K
SUN ANTHONY Y
Director
26,322
$96.86K
Benjamin Stephen Keith
Director
25,511
$93.88K
Palanki Ram
Director
4,236
$15.59K

No percentages here. This company's share count has moved by a factor of 30.5 over the window, from 2,830,546 to 86,441,611 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Insider
Date
Role
Action
Shares
Price
Amount
Jung Hyunsu
2 Jun 2026
See Remarks
Buy
500
$3.68
$1.84K
Jung Hyunsu
2 Jun 2026
See Remarks
Buy
500
$3.64
$1.82K
Jung Hyunsu
1 Jun 2026
See Remarks
Buy
2,000
$3.81
$7.62K
Jung Hyunsu
1 Jun 2026
See Remarks
Buy
5,000
$3.66
$18.30K
Knox David R.
31 Dec 2025
Chief Financial Officer
Buy
27,950
$3.59
$100.34K
Strahlman Ellen R
29 Dec 2025
Director
Buy indirect
11,856
$3.61
$42.80K
Strahlman Ellen R
29 Dec 2025
Director
Buy
12,112
$3.60
$43.60K
Strahlman Ellen R
26 Dec 2025
Director
Buy indirect
3,311
$3.86
$12.78K
Strahlman Ellen R
26 Dec 2025
Director
Buy
3,601
$3.86
$13.91K
Strahlman Ellen R
18 Dec 2025
Director
Buy indirect
19,702
$3.14
$61.83K
Strahlman Ellen R
18 Dec 2025
Director
Buy
18,742
$3.14
$58.83K
GELTZEILER MICHAEL S
17 Dec 2025
Director
Buy
30,000
$3.01
$90.21K
Walters Happy David
17 Dec 2025
Director
Buy
61,930
$3.02
$187.15K
Rowe Michael M
28 Aug 2024
Chief Executive Officer
Buy
27,071
$0.52
$14.08K
Rowe Michael M
26 Aug 2024
Chief Executive Officer
Buy
50,000
$0.57
$28.50K
Grant Stuart M.
2 Jul 2024
10% owner
Buy
1,515,151
$0.66
$1,000.00K
Grant Stuart M.
28 Mar 2024
10% owner
Buy
100,000
$0.98
$98.00K
Grant Stuart M.
19 Mar 2024
10% owner
Buy
50,000
$1.23
$61.50K
Grant Stuart M.
8 Mar 2024
10% owner
Buy
10,717
$1.58
$16.91K
Rowe Michael M
4 Dec 2023
Chief Executive Officer
Buy
4,890
$1.36
$6.65K
Strahlman Ellen R
29 Sep 2023
Director
Buy
4,820
$1.68
$8.10K
Rowe Michael M
19 Sep 2023
Chief Executive Officer
Buy
1,400
$1.66
$2.32K
Rowe Michael M
15 Sep 2023
Chief Executive Officer
Buy
1,137
$1.75
$1.99K
Grant Stuart M.
17 Aug 2023
10% owner
Buy
30,000
$1.87
$56.10K
Grant Stuart M.
16 Aug 2023
10% owner
Buy
45,000
$1.91
$85.82K
GANDOLFO JOHN P
31 May 2023
Chief Financial Officer
Buy
2,000
$2.79
$5.58K
MATHER CHARLES E IV
26 May 2023
Director
Buy
3,000
$2.49
$7.47K
Kern Bren
26 May 2023
Chief Operating Officer
Buy
2,500
$2.73
$6.83K
Grant Stuart M.
25 May 2023
10% owner
Buy
88,247
$2.65
$233.85K
Strahlman Ellen R
23 May 2023
Director
Buy
10,000
$3.10
$30.98K
MATHER CHARLES E IV
15 May 2023
Director
Buy
4,000
$3.39
$13.56K
Rowe Michael M
1 May 2023
Chief Executive Officer
Exercised, kept
10,000
$2.72
$27.20K
Ianchulev Tsontcho
1 May 2023
Director
Sold on a plan
90,000
$5.50
$495.00K
Ianchulev Tsontcho
27 Apr 2023
Director
Sold on a plan
60,000
$5.00
$300.00K
Ianchulev Tsontcho
14 Apr 2023
Director
Sold on a plan
40,000
$4.50
$180.00K
Ianchulev Tsontcho
11 Apr 2023
Director
Sold on a plan
40,000
$4.00
$160.00K
Ianchulev Tsontcho
31 Mar 2023
Director
Sold on a plan
40,000
$3.50
$140.00K
Grant Stuart M.
30 Dec 2022
10% owner
Buy
21,753
$1.50
$32.63K
Rowe Michael M
30 Dec 2022
CHIEF EXECUTIVE OFFICER
Buy
10,000
$1.54
$15.40K
Strahlman Ellen R
31 Aug 2022
Director
Buy
6,686
$1.62
$10.81K
Strahlman Ellen R
30 Aug 2022
Director
Buy
6,744
$1.60
$10.80K
Strahlman Ellen R
29 Aug 2022
Director
Buy
7,931
$1.62
$12.84K
Strahlman Ellen R
24 Aug 2022
Director
Buy
1,504
$1.59
$2.38K
Grant Stuart M.
21 Jun 2022
10% owner
Buy
100,000
$1.65
$165.00K
LEE KENNETH B JR
19 May 2022
Director
Buy
10,000
$2.20
$22.00K
MATHER CHARLES E IV
18 May 2022
Director
Buy
7,000
$2.03
$14.23K
Grant Stuart M.
11 May 2022
10% owner
Buy
25,000
$1.95
$48.75K
Grant Stuart M.
10 May 2022
10% owner
Buy
50,000
$1.98
$99.00K
Grant Stuart M.
5 May 2022
10% owner
Buy
25,926
$2.26
$58.59K
Grant Stuart M.
4 May 2022
10% owner
Buy
24,074
$2.26
$54.41K
Grant Stuart M.
22 Apr 2022
10% owner
Buy
20,000
$2.55
$51.00K
Grant Stuart M.
21 Apr 2022
10% owner
Buy
38,800
$2.59
$100.49K
MATHER CHARLES E IV
31 Mar 2022
Director
Buy
4,000
$3.12
$12.46K
Grant Stuart M.
22 Feb 2022
10% owner
Buy
42,000
$2.75
$115.50K
Grant Stuart M.
18 Feb 2022
10% owner
Buy
10,000
$2.85
$28.50K
Grant Stuart M.
7 Feb 2022
10% owner
Buy
36,030
$2.97
$107.01K
Grant Stuart M.
15 Dec 2021
10% owner
Buy
100,000
$3.45
$345.00K
Grant Stuart M.
16 Nov 2021
10% owner
Buy
25,000
$3.52
$88.00K
Grant Stuart M.
15 Nov 2021
10% owner
Buy
25,000
$3.67
$91.75K
Grant Stuart M.
15 Nov 2021
10% owner
Buy
25,000
$3.64
$91.00K
Grant Stuart M.
15 Nov 2021
10% owner
Buy
25,000
$3.60
$90.00K
Ianchulev Tsontcho
3 Nov 2021
CHIEF EXECUTIVE OFFICER
Buy
30,000
$4.04
$121.21K
MATHER CHARLES E IV
1 Nov 2021
Director
Buy
4,000
$3.83
$15.31K
Grant Stuart M.
29 Oct 2021
10% owner
Buy
15,105
$3.75
$56.64K
Grant Stuart M.
29 Oct 2021
10% owner
Buy
400
$3.74
$1.50K
Rowe Michael M
27 Oct 2021
CHIEF OPERATING OFFICER
Buy
1,200
$4.14
$4.97K
Grant Stuart M.
26 Oct 2021
10% owner
Buy
100,000
$4.00
$400.00K
Grant Stuart M.
25 Oct 2021
10% owner
Buy
33,806
$4.00
$135.22K
Rowe Michael M
13 Sep 2021
Chief Operating Officer
Buy
1,500
$4.40
$6.60K
Grant Stuart M.
19 Aug 2021
10% owner
Buy
49,057
$3.98
$195.25K
Grant Stuart M.
19 Aug 2021
10% owner
Buy
750
$3.96
$2.97K
Grant Stuart M.
19 Aug 2021
10% owner
Buy
193
$3.98
$767.18
Grant Stuart M.
18 Aug 2021
10% owner
Buy
100
$3.95
$395.00
Grant Stuart M.
18 Aug 2021
10% owner
Buy
100
$3.95
$394.60
Grant Stuart M.
18 Aug 2021
10% owner
Buy
724
$3.93
$2.85K
Grant Stuart M.
17 Aug 2021
10% owner
Buy
23,419
$4.00
$93.68K
Clasby Jennifer G
17 Jun 2021
VP, Regulatory and Clinical
Exercised, kept
24,510
$1.95
$47.79K
LEE KENNETH B JR
15 Jun 2021
Director
Buy
2,000
$5.41
$10.81K
LEE KENNETH B JR
14 Jun 2021
Director
Buy
2,000
$5.47
$10.94K
LEE KENNETH B JR
11 Jun 2021
Director
Buy
2,000
$5.38
$10.76K
MATHER CHARLES E IV
28 May 2021
Director
Buy
3,000
$4.76
$14.27K
Rowe Michael M
27 May 2021
Chief Operating Officer
Buy
1,400
$4.71
$6.59K
Grant Stuart M.
20 Apr 2021
10% owner
Buy
5,000
$4.70
$23.50K
Grant Stuart M.
20 Apr 2021
10% owner
Buy
25,000
$4.80
$120.00K
Grant Stuart M.
19 Apr 2021
10% owner
Buy
5,692
$4.86
$27.66K
Grant Stuart M.
19 Apr 2021
10% owner
Buy
25,000
$4.90
$122.50K
Grant Stuart M.
5 Mar 2021
10% owner
Buy
35,000
$5.50
$192.50K
MARIO ERNEST
15 Jan 2021
Director
Exercised, kept
41,216
$2.27
$93.56K
Ianchulev Tsontcho
5 Jan 2021
Chief Executive Officer
Exercised, kept
41,216
$2.27
$93.56K
GANDOLFO JOHN P
19 Nov 2020
Chief Financial Officer
Buy
4,000
$3.40
$13.60K
Grant Stuart M.
12 Oct 2020
10% owner
Buy
50,000
$3.60
$180.00K
Grant Stuart M.
12 Oct 2020
10% owner
Buy
50,000
$3.50
$175.00K
Grant Stuart M.
24 Sep 2020
10% owner
Buy
50,000
$3.00
$150.00K
Grant Stuart M.
24 Sep 2020
10% owner
Buy
25,000
$2.98
$74.50K
Clasby Jennifer G
18 Sep 2020
VP, Clinical Operations
Exercised, kept
26,737
$1.95
$52.14K
Grant Stuart M.
20 Aug 2020
10% owner
Buy
451,620
$2.06
$929.43K
Grant Stuart M.
19 Aug 2020
10% owner
Buy
333,000
$3.60
$1.20M
MARIO ERNEST
24 Mar 2020
Director
Buy
82,431
$2.27
$187.12K
Ianchulev Tsontcho
24 Mar 2020
Chief Executive Officer
Buy
82,431
$2.27
$187.12K
Grant Stuart M.
23 Mar 2020
10% owner
Buy
903,240
$2.06
$1.86M
Grant Stuart M.
13 Nov 2019
10% owner
Buy
10,000
$2.65
$26.50K
Grant Stuart M.
12 Nov 2019
10% owner
Buy
29,945
$2.70
$80.76K
Grant Stuart M.
31 Oct 2019
10% owner
Buy
6,072
$2.71
$16.45K
Grant Stuart M.
30 Oct 2019
10% owner
Buy
25,000
$2.85
$71.35K
Grant Stuart M.
17 Oct 2019
10% owner
Buy
3,328
$3.01
$10.02K
Grant Stuart M.
16 Oct 2019
10% owner
Buy
15,000
$3.14
$47.06K
Grant Stuart M.
15 Oct 2019
10% owner
Buy
6,720
$3.25
$21.81K
Grant Stuart M.
14 Oct 2019
10% owner
Buy
6,700
$3.25
$21.78K
Grant Stuart M.
2 Oct 2019
10% owner
Buy
5,000
$3.33
$16.65K
Grant Stuart M.
1 Oct 2019
10% owner
Buy
5,000
$3.44
$17.20K
Grant Stuart M.
30 Sep 2019
10% owner
Buy
17,940
$3.70
$66.36K
Rowe Michael M
30 Sep 2019
Vice President, Commercial
Buy
100
$3.84
$384.00
Grant Stuart M.
27 Sep 2019
10% owner
Buy
312
$4.00
$1.25K
Ianchulev Tsontcho
11 Jul 2019
Chief Executive Officer
Buy
233,813
$2.78
$650.00K
LaBelle Curt H
11 Jul 2019
Director
Buy
17,985
$2.78
$50.00K
MARIO ERNEST
11 Jul 2019
Director
Buy
35,971
$2.78
$100.00K
Yoshida Shuhei
14 May 2019
Director
Exercised, kept
33,334
$1.95
$65.00K
Ianchulev Tsontcho
2 Jan 2019
Chief Executive Officer
Exercised, kept indirect
140,000
$1.24
$173.60K
Ianchulev Tsontcho
2 Jan 2019
Chief Executive Officer
Exercised, kept
133,686
$1.95
$260.69K
Ianchulev Tsontcho
2 Jan 2019
Chief Executive Officer
Exercised, kept
40,000
$1.24
$49.60K
LaBelle Curt H
2 Jan 2019
Director
Exercised, kept indirect
140,000
$1.24
$173.60K
Rowe Michael M
25 Sep 2018
Vice President of Marketing
Buy
600
$4.27
$2.56K
Rowe Michael M
24 Sep 2018
Vice President of Marketing
Buy
200
$4.09
$818.00
MATHER CHARLES E IV
19 Sep 2018
Director
Buy
3,000
$4.78
$14.34K
MATHER CHARLES E IV
18 Sep 2018
Director
Buy
1,000
$4.80
$4.80K
Clasby Jennifer G
10 Sep 2018
VP, Clinical Operations
Exercised, kept
28,965
$1.95
$56.48K
Ianchulev Tsontcho
28 Jun 2018
Chief Executive Officer
Buy indirect
6,000
$6.63
$39.78K
GANDOLFO JOHN P
28 Jun 2018
Chief Financial Officer
Buy
2,000
$5.86
$11.72K
ESHELMAN FREDRIC N
29 Jan 2018
Director
Buy
335,000
$10.00
$3.35M
Ianchulev Tsontcho
29 Jan 2018
Chief Executive Officer
Buy
10,000
$10.00
$100.00K
LaBelle Curt H
29 Jan 2018
Director
Buy
10,000
$10.00
$100.00K
Senju Pharmaceutical Co., Ltd.
29 Jan 2018
10% owner
Buy
100,000
$10.00
$1.00M
Yoshida Shuhei
29 Jan 2018
Director
Buy indirect
100,000
$10.00
$1.00M
MARIO ERNEST
29 Jan 2018
Director
Buy
90,000
$10.00
$900.00K

What was left out

Form 4 filings counted 194
Amendments (4/A) skipped 10
Filings about a different issuer 0
Unreadable filings 0
Joint filings 1
Sales on a Rule 10b5-1 plan 5
Sales straight out of an exercise 0
Sales at will 0
Transactions with no price 0
Shares from compensation/vesting 4,983,345
History held since 6 Feb 2018