Comparable stake leader
PERCEPTIVE ADVISORS LLC
SEC ownership of CHEMBIO DIAGNOSTICS, INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001092662.
Disclosed value leader
PERCEPTIVE ADVISORS LLC
Comparable rows
0/1
Latest evidence
04 Apr 2023
- Parsed ownership sources
- 3/4/5
- Largest SEC-reported holder
- PERCEPTIVE ADVISORS LLC
- Latest parsed ownership date
- 04 Apr 2023
- Issuer CIK
- 0001092662
- Issuer location
- Hauppauge, NY
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 CHEMBIO DIAGNOSTICS, 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
PERCEPTIVE ADVISORS LLC
Disclosed value leader
PERCEPTIVE ADVISORS LLC
Comparable rows
0/1
Latest evidence
04 Apr 2023
3/4/5
Highest disclosed value: $1,652,698
1 rows are not safely comparable across share classes.
Quick read
PERCEPTIVE ADVISORS LLC has the largest disclosed position value at $1.65M.
0 of 1 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 PERCEPTIVE ADVISORS LLC's linked filing trail.
Disclosed position value
Top 1
PERCEPTIVE ADVISORS LLC
$1.65M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-1 of 1 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$1,652,698
3,672,662 shares
|
— | 04 Apr 2023 |
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 1-12 of 12 reporting-owner rows connected to CHEMBIO DIAGNOSTICS, INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
12
Largest Forms 3/4/5 holder
PERCEPTIVE ADVISORS LLC
Net 12M change
$0
Latest report
27 Apr 2023
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC | 10%+ Owner | $1,652,698 | Mixed | 04 Apr 2023 | ||
| Lawrence J. Steenvoorden | Officer | Mixed | 05 Jan 2023 | |||
| Richard L. Eberly | Chief Executive Officer and President, Director | Mixed | 15 Mar 2022 | |||
| David Acheson | Director | Mixed | 11 Mar 2022 | |||
| John Gary Potthoff | Director | Mixed | 11 Mar 2022 | |||
| Paul J. Angelico | Officer | Mixed | 28 Oct 2022 | |||
| Leslie Teso-Lichtman | Director | Mixed | 27 Apr 2023 | |||
| Perceptive Credit Advisors, LLC | Former 10% Owner | Mixed | 27 Apr 2023 | |||
| Charles Caso | Senior Vice President, Global Commercial Operations | Mixed | 01 Jun 2022 | |||
| David William Bespalko | Director | Mixed | 15 Mar 2022 | |||
| Katherine Lyon Davis | Director | Mixed | 11 Mar 2022 | |||
| Javan Esfandiari | Executive Vice President, Chief Science and Technology Officer | Mixed | 11 Mar 2022 |
Recent insider transactions for CHEMBIO DIAGNOSTICS, 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.