Comparable stake leader
Elizabeth Plaza
SEC ownership of Pharma-Bio Serv, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001304161.
Disclosed value leader
Elizabeth Plaza
Comparable rows
0/7
Latest evidence
10 Jan 2026
- Public ticker
- PBSV on OTC
- Parsed ownership sources
- 3/4/5
- Largest SEC-reported holder
- Elizabeth Plaza
- Latest parsed ownership date
- 10 Jan 2026
- Issuer CIK
- 0001304161
- Issuer location
- Dorado, PR
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 Pharma-Bio Serv, 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
Elizabeth Plaza
Disclosed value leader
Elizabeth Plaza
Comparable rows
0/7
Latest evidence
10 Jan 2026
3/4/5
Highest disclosed value: $4,084,096
7 rows are not safely comparable across share classes.
Quick read
Elizabeth Plaza has the largest disclosed position value at $4.08M.
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 Elizabeth Plaza's linked filing trail.
Disclosed position value
Top 3
Elizabeth Plaza
$4.08M
Pedro J. Lasanta
$126.3K
Altura Victor Sanchez
$12.1K
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 |
|---|---|---|---|---|---|
| Elizabeth Plaza |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$4,084,096
3,852,921 shares
|
— | 24 Jun 2021 |
| Pedro J. Lasanta |
3/4/5
Chief Financial Officer
|
—
mixed-class rows
|
$126,339
129,188 shares
mixed-class rows
|
— | 26 Dec 2023 |
| Altura Victor Sanchez |
3/4/5
President and CEO
|
—
mixed-class rows
|
$12,065
28,057 shares
mixed-class rows
|
— | 06 Mar 2023 |
| Dov Perlysky |
3/4/5
Director
|
—
class O/S missing
|
—
20,000 shares
|
— | 10 Jan 2026 |
| Howard Spindel |
3/4/5
Director
|
—
class O/S missing
|
—
20,000 shares
|
— | 10 Jan 2026 |
| Irving L. Wiesen |
3/4/5
Director
|
—
class O/S missing
|
—
20,000 shares
|
— | 10 Jan 2026 |
| Kirk Wheeler Michel |
3/4/5
Chairman, Director
|
—
class O/S missing
|
—
20,000 shares
|
— | 10 Jan 2026 |
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 Pharma-Bio Serv, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
7
Largest Forms 3/4/5 holder
Elizabeth Plaza
Net 12M change
$0
Latest report
10 Jan 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Elizabeth Plaza | 10%+ Owner | $4,084,096 | Mixed | 24 Jun 2021 | ||
| Pedro J. Lasanta | Chief Financial Officer | $126,339 | Mixed | 26 Dec 2023 | ||
| Altura Victor Sanchez | President and CEO | $12,065 | Mixed | 06 Mar 2023 | ||
| Howard Spindel | Director | Mixed | 10 Jan 2026 | |||
| Dov Perlysky | Director | Mixed | 10 Jan 2026 | |||
| Kirk Wheeler Michel | Chairman, Director | Mixed | 10 Jan 2026 | |||
| Irving L. Wiesen | Director | Mixed | 10 Jan 2026 |
Recent insider transactions for Pharma-Bio Serv, 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Kirk Wheeler Michel | PBSV | Stock Option | Award | 20,000 | 20,000 | 10 Jan 2026 | Direct | |||
| Dov Perlysky | PBSV | Stock Option | Award | 20,000 | 20,000 | 10 Jan 2026 | Direct | |||
| Howard Spindel | PBSV | Stock Option | Award | 20,000 | 20,000 | 10 Jan 2026 | Direct | |||
| Irving L. Wiesen | PBSV | Stock Option | Award | 20,000 | 20,000 | 10 Jan 2026 | Direct |
* marks a reported price that did not pass the local price check.