Comparable stake leader
Rita M. O'Connor
SEC ownership of PLx Pharma Winddown Corp.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001497504.
Disclosed value leader
Rita M. O'Connor
Comparable rows
0/7
Latest evidence
15 Mar 2022
- Parsed ownership sources
- 3/4/5
- Largest SEC-reported holder
- Rita M. O'Connor
- Latest parsed ownership date
- 15 Mar 2022
- Issuer CIK
- 0001497504
- Issuer location
- Sparta, NJ
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 PLx Pharma Winddown Corp. (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
Rita M. O'Connor
Disclosed value leader
Rita M. O'Connor
Comparable rows
0/7
Latest evidence
15 Mar 2022
3/4/5
Highest disclosed value: $97,423
7 rows are not safely comparable across share classes.
Quick read
Rita M. O'Connor has the largest disclosed position value at $97.4K.
0 of 7 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 Rita M. O'Connor's linked filing trail.
Disclosed position value
Top 2
Rita M. O'Connor
$97.4K
Natasha Giordano
$18.9K
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-7 of 7 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Rita M. O'Connor |
3/4/5
Chief Financial Officer
|
—
mixed-class rows
|
$97,423
136,670 shares
mixed-class rows
|
— | 15 Mar 2022 |
| Natasha Giordano |
3/4/5
Chief Executive Officer, Director
|
—
mixed-class rows
|
$18,944
305,186 shares
mixed-class rows
|
— | 15 Mar 2022 |
| Michael J. Valentino |
3/4/5
Executive Chairman, Director
|
—
class O/S missing
|
—
80,000 shares
|
— | 22 Feb 2022 |
| Gary S. Balkema |
3/4/5
Director
|
—
class O/S missing
|
—
20,000 shares
|
— | 22 Feb 2022 |
| John Hadden |
3/4/5
Director
|
—
class O/S missing
|
—
20,000 shares
|
— | 22 Feb 2022 |
| Kirk K. Calhoun |
3/4/5
Director
|
—
class O/S missing
|
—
20,000 shares
|
— | 22 Feb 2022 |
| Robert Casale |
3/4/5
Director
|
—
class O/S missing
|
—
20,000 shares
|
— | 22 Feb 2022 |
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 06 Jun 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 1-7 of 7 reporting-owner rows connected to PLx Pharma Winddown Corp.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
7
Largest Forms 3/4/5 holder
Rita M. O'Connor
Net 12M change
$0
Latest report
15 Mar 2022
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Rita M. O'Connor | Chief Financial Officer | $97,423 | Filing P/S | 15 Mar 2022 | ||
| Natasha Giordano | Chief Executive Officer, Director | $18,944 | Filing P/S | 15 Mar 2022 | ||
| Kirk K. Calhoun | Director | Mixed | 22 Feb 2022 | |||
| Gary S. Balkema | Director | Mixed | 22 Feb 2022 | |||
| Robert Casale | Director | Mixed | 22 Feb 2022 | |||
| Michael J. Valentino | Executive Chairman, Director | Mixed | 22 Feb 2022 | |||
| John Hadden | Director | Mixed | 22 Feb 2022 |
Recent insider transactions for PLx Pharma Winddown Corp.
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.