Mihael Hristos Polymeropoulos

CIK: 0001355537

Transaction Breakdown

Open Market Buys (P)14 (77.8%)

High conviction signal

Open Market Sales (S)1 (5.6%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (11.1%)

Compensation grants

Other (G, F, J, C, D, …)1 (5.6%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

VNDA

Vanda Pharmaceuticals Inc.

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (18 total)

VNDA
Vanda Pharmaceuticals Inc.
Mar 2, 2026
Sale(S)
Direct
156.2K shares at avg. $8.17$1.3M
VNDA
Vanda Pharmaceuticals Inc.
Feb 18, 2026
Award(A)
Direct
525K shares-
VNDA
Vanda Pharmaceuticals Inc.
Aug 7, 2025
Purchase(P)
Direct
10K shares at avg. $4.15$42K
VNDA
Vanda Pharmaceuticals Inc.
May 21, 2025
Purchase(P)
Direct
9.5K shares at avg. $4.40$42K
VNDA
Vanda Pharmaceuticals Inc.
May 21, 2025
Purchase(P)
Direct
481 shares at avg. $4.39$2K
VNDA
Vanda Pharmaceuticals Inc.
May 16, 2025
Purchase(P)
Direct
20K shares at avg. $4.22$84K
VNDA
Vanda Pharmaceuticals Inc.
Mar 6, 2025
Purchase(P)
Direct
5K shares at avg. $5.01$25K
VNDA
Vanda Pharmaceuticals Inc.
Mar 6, 2025
Purchase(P)
Direct
5K shares at avg. $5.02$25K
VNDA
Vanda Pharmaceuticals Inc.
Mar 5, 2025
Purchase(P)
Direct
5K shares at avg. $5.01$25K
VNDA
Vanda Pharmaceuticals Inc.
Mar 5, 2025
Purchase(P)
Direct
5K shares at avg. $5.03$25K
VNDA
Vanda Pharmaceuticals Inc.
Mar 3, 2025
Purchase(P)
Direct
10K shares at avg. $4.71$47K
VNDA
Vanda Pharmaceuticals Inc.
Mar 1, 2025
Tax Payment(F)
Direct
96K shares at avg. $4.76$457K
VNDA
Vanda Pharmaceuticals Inc.
Feb 28, 2025
Purchase(P)
Direct
10K shares at avg. $4.76$48K
VNDA
Vanda Pharmaceuticals Inc.
Feb 27, 2025
Purchase(P)
Direct
10K shares at avg. $4.76$48K
VNDA
Vanda Pharmaceuticals Inc.
Feb 26, 2025
Purchase(P)
Direct
5K shares at avg. $4.78$24K
VNDA
Vanda Pharmaceuticals Inc.
Feb 26, 2025
Purchase(P)
Direct
5K shares at avg. $4.75$24K
VNDA
Vanda Pharmaceuticals Inc.
Feb 25, 2025
Purchase(P)
Direct
10K shares at avg. $4.46$45K
VNDA
Vanda Pharmaceuticals Inc.
Feb 18, 2025
Award(A)
Direct
450K shares-

		Type	Shares	Price		Ownership
Mar 2, 2026	VNDA Vanda Pharmaceuticals Inc.	Sale(S)	156,235	$8.17	$1,276,971	Direct
Feb 18, 2026	VNDA Vanda Pharmaceuticals Inc.	Award(A)	525,000	-	$0	Direct
Aug 7, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	10,000	$4.15	$41,500	Direct
May 21, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	9,519	$4.40	$41,884	Direct
May 21, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	481	$4.39	$2,112	Direct
May 16, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	20,000	$4.22	$84,472	Direct
Mar 6, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	5,000	$5.01	$25,050	Direct
Mar 6, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	5,000	$5.02	$25,100	Direct
Mar 5, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	5,000	$5.01	$25,050	Direct
Mar 5, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	5,000	$5.03	$25,150	Direct
Mar 3, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	10,000	$4.71	$47,050	Direct
Mar 1, 2025	VNDA Vanda Pharmaceuticals Inc.	Tax Payment(F)	95,999	$4.76	$456,955	Direct
Feb 28, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	10,000	$4.76	$47,600	Direct
Feb 27, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	10,000	$4.76	$47,600	Direct
Feb 26, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	5,000	$4.78	$23,900	Direct
Feb 26, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	5,000	$4.75	$23,750	Direct
Feb 25, 2025	VNDA Vanda Pharmaceuticals Inc.	Purchase(P)	10,000	$4.46	$44,640	Direct
Feb 18, 2025	VNDA Vanda Pharmaceuticals Inc.	Award(A)	450,000	-	-	Direct

1-18 of 18 transactions

About Polymeropoulos Mihael Hristos

Polymeropoulos Mihael Hristos (SEC CIK 0001355537) files insider reports with the SEC as President and CEO of Vanda Pharmaceuticals Inc. (VNDA).

Signal8 holds 13 ownership filings by Polymeropoulos Mihael Hristos, all Form 4s, filed between Feb 20, 2025 and Mar 4, 2026. Those filings report 18 transactions, from Feb 18, 2025 to Mar 2, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Polymeropoulos Mihael Hristos's filings is in WASHINGTON, DC.

Recent filings by Polymeropoulos Mihael Hristos

Mar 2, 2026: Open-market sale of VNDA shares (Form 4, code S).
Feb 18, 2026: Grant or award of VNDA shares (Form 4, code A).
Aug 7, 2025: Open-market purchase of VNDA shares (Form 4, code P).
May 21, 2025: Open-market purchases of VNDA shares (2 lines, Form 4, code P).
May 16, 2025: Open-market purchase of VNDA shares (Form 4, code P).

Other insiders filing for Vanda Pharmaceuticals Inc. (VNDA)

McGuire Daniel Patrick, SVP, GC and Secretary
Chrousos Phaedra, Director
Duncan Charles Cliff, Director
DUGAN RICHARD W, Director
Ward Anne Sempowski, Director
Honore Tage, Director

How to read Form 4 transaction codes