Comparable stake leader
Tom Y. Lee
SEC ownership of PURE BIOSCIENCE, INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001006028.
Disclosed value leader
Darin Zehr
Comparable rows
0/10
Latest evidence
17 Nov 2025
- Public ticker
- PURE on OTC
- Parsed ownership sources
-
3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Tom Y. Lee
Ranking: Comparable ownership first, then disclosed value
- Latest parsed ownership date
-
17 Nov 2025
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001006028
- Issuer location
- El Cajon, CA
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 PURE BIOSCIENCE, 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
Tom Y. Lee
Disclosed value leader
Darin Zehr
Comparable rows
0/10
Latest evidence
17 Nov 2025
3/4/5
Highest disclosed value: $7
10 rows are not safely comparable across share classes.
Showing 1-8 of 10 holder rows.
Quick read
Darin Zehr has the largest disclosed position value at $7.
0 of 10 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 Darin Zehr's linked filing trail.
Disclosed position value
Top 1
Darin Zehr
$7
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-8 of 10 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Tom Y. Lee |
3/4/5
Director, 10%+ Owner
|
—
class O/S missing
|
—
125,000 shares
|
— | 20 Aug 2024 |
| Darin Zehr |
3/4/5
Director
|
—
mixed-class rows
|
$7
125,050 shares
mixed-class rows
|
— | 20 Aug 2024 |
| Robert F. Bartlett |
3/4/5
CEO and President, Director
|
—
class O/S missing
|
—
500,000 shares
|
— | 20 Aug 2024 |
| Mark Stuart Elliott |
3/4/5
Vice President, Finance
|
—
class O/S missing
|
—
155,000 shares
|
— | 20 Aug 2024 |
| Thomas Richard Myers |
3/4/5
Exec VP, Tech & Development
|
—
class O/S missing
|
—
155,000 shares
|
— | 20 Aug 2024 |
| Ivan Chen |
3/4/5
Director
|
—
class O/S missing
|
—
150,000 shares
|
— | 20 Aug 2024 |
| Bernard Blotner |
3/4/5
Director
|
—
class O/S missing
|
—
125,000 shares
|
— | 20 Aug 2024 |
| David Rendall |
3/4/5
Director
|
—
class O/S missing
|
—
125,000 shares
|
— | 20 Aug 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 21 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 1-10 of 10 reporting-owner rows connected to PURE BIOSCIENCE, INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
10
Largest Forms 3/4/5 holder
Darin Zehr
Net 12M change
$0
Latest report
17 Nov 2025
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Darin Zehr | Director | $7 | Mixed | 20 Aug 2024 | ||
| Tom Y. Lee | Director, 10%+ Owner | Mixed | 20 Aug 2024 | |||
| Mark Stuart Elliott | Vice President, Finance | Mixed | 20 Aug 2024 | |||
| David Rendall | Director | Mixed | 20 Aug 2024 | |||
| Thomas Richard Myers | Exec VP, Tech & Development | Mixed | 20 Aug 2024 | |||
| Kristin Taylor | Director | Mixed | 30 Sep 2022 | |||
| Ivan Chen | Director | Mixed | 20 Aug 2024 | |||
| Robert F. Bartlett | CEO and President, Director | Mixed | 20 Aug 2024 | |||
| Jeffrey Scott Kitchell | President, Corporate Secretary | Mixed | 17 Nov 2025 | |||
| Bernard Blotner | Director | Mixed | 20 Aug 2024 |
Recent insider transactions for PURE BIOSCIENCE, 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Jeffrey Scott Kitchell | PURE | Common Stock | 0 | 12,998 | 17 Nov 2025 | Direct |
* marks a reported price that did not pass the local price check.