Comparable stake leader
NGP Energy Technology Partners II, L.P.
SEC ownership of GSE SYSTEMS INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000944480.
Disclosed value leader
NGP Energy Technology Partners II, L.P.
Comparable rows
0/12
Latest evidence
30 Sep 2024
- Parsed ownership sources
-
3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
NGP Energy Technology Partners II, L.P.
Ranking: Comparable ownership first, then disclosed value
- Latest parsed ownership date
-
30 Sep 2024
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000944480
- Issuer location
- Columbia, MD
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
1 signal
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of GSE SYSTEMS INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
NGP Energy Technology Par...
Disclosed value leader
NGP Energy Technology Par...
Comparable rows
0/12
Latest evidence
30 Sep 2024
3/4/5
Highest disclosed value: $3,770,314
12 rows are not safely comparable across share classes.
Showing 1-8 of 12 holder rows.
Quick read
NGP Energy Technology Partners II, L.P. has the largest disclosed position value at $3.77M.
0 of 12 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens NGP Energy Technology Partners II, L.P.'s linked filing trail.
Disclosed position value
Top 5
NGP Energy Technology Partners II...
$3.77M
O'Connor Kathryn
$558.4K
William S. Corey Jr.
$531.1K
Loudermilk Kyle Justin
$430.5K
Suresh Sundaram
$412.2K
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-8 of 12 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| NGP Energy Technology Partners II, L.P. |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$3,770,314
1,875,778 shares
|
— | 17 Mar 2023 |
| O'Connor Kathryn |
3/4/5
Director
|
—
class O/S missing
|
$558,390
277,806 shares
|
— | 12 Jun 2023 |
| William S. Corey Jr. |
3/4/5
Director
|
—
class O/S missing
|
$531,074
264,216 shares
|
— | 12 Jun 2023 |
| Loudermilk Kyle Justin |
3/4/5
President & CEO, Director
|
—
mixed-class rows
|
$430,473
233,776 shares
mixed-class rows
|
— | 31 Mar 2024 |
| Suresh Sundaram |
3/4/5
Director
|
—
class O/S missing
|
$412,225
205,087 shares
|
— | 14 Jun 2022 |
| Dougherty III Thomas James |
3/4/5
Director
|
—
class O/S missing
|
$394,456
196,247 shares
|
— | 12 Jun 2023 |
| Pugh Daniel Warren |
3/4/5
Chief Legal and Risk Officer
|
—
mixed-class rows
|
$248,922
162,092 shares
mixed-class rows
|
— | 05 Apr 2023 |
| Pepe Emmett Anthony |
3/4/5
Chief Financial Officer
|
—
mixed-class rows
|
$173,130
59,288 shares
mixed-class rows
|
— | 30 Sep 2024 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 01 Jul 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-12 of 12 reporting-owner rows connected to GSE SYSTEMS INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
12
Largest Forms 3/4/5 holder
NGP Energy Technology Partners II, L.P.
Net 12M change
$0
Latest report
30 Sep 2024
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| NGP Energy Technology Partners II, L.P. | 10%+ Owner | $3,770,314 | Mixed | 17 Mar 2023 | ||
| O'Connor Kathryn | Director | $558,390 | Mixed | 12 Jun 2023 | ||
| William S. Corey Jr. | Director | $531,074 | Mixed | 12 Jun 2023 | ||
| Loudermilk Kyle Justin | President & CEO, Director | $430,473 | Mixed | 31 Mar 2024 | ||
| Suresh Sundaram | Director | $412,225 | Mixed | 14 Jun 2022 | ||
| Dougherty III Thomas James | Director | $394,456 | Mixed | 12 Jun 2023 | ||
| Pugh Daniel Warren | Chief Legal and Risk Officer | $248,922 | Mixed | 05 Apr 2023 | ||
| Pepe Emmett Anthony | Chief Financial Officer | $173,130 | Mixed | 30 Sep 2024 | ||
| Donald Horn | President, GSE Engineering | $127,852 | Mixed | 31 Mar 2023 | ||
| Meyssami Bahram | Chief Technology Officer | $94,151 | Mixed | 30 Sep 2024 | ||
| Khanna Ravi | President & CEO, Director | $46,370 | Mixed | 30 Sep 2024 | ||
| Greene Brian | VP, GSE Workforce Solutions | $15,173 | Mixed | 30 Sep 2024 |
Recent insider transactions for GSE SYSTEMS INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* marks a reported price that did not pass the local price check.