Comparable stake leader
About Investment Pte. Ltd
SEC ownership of AQUABOUNTY TECHNOLOGIES INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001603978.
Disclosed value leader
Randal J. Kirk
Comparable rows
1/50
Latest evidence
07 Apr 2026
- Public ticker
- AQB on Nasdaq
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
About Investment Pte. Ltd
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
1 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
About Investment Pte. Ltd
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
07 Apr 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001603978
- Issuer location
- Harvard, MA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of AQUABOUNTY TECHNOLOGIES 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
About Investment Pte. Ltd
Disclosed value leader
Randal J. Kirk
Comparable rows
1/50
Latest evidence
07 Apr 2026
13D/G
3/4/5
13F
Lead comparable stake: 6.2%
49 rows are not safely comparable across share classes.
13D/G row: About Investment Pte. Ltd
Showing 1-8 of 50 holder rows.
Quick read
About Investment Pte. Ltd leads the comparable SEC ownership view at 6.2%.
1 of 50 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 About Investment Pte. Ltd's linked filing trail.
Comparable ownership
Top 1
About Investment Pte. Ltd
6.2%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| About Investment Pte. Ltd |
13D/G
|
6.2%
|
—
337,355 shares
|
$0 | 07 Apr 2026 |
| Randal J. Kirk |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$4,752,446
5,339,824 shares
|
— | 23 Nov 2021 |
| Erin S. Sharp |
3/4/5
Director
|
—
mixed-class rows
|
$166,479
189,555 shares
mixed-class rows
|
— | 14 Jun 2023 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
—
class O/S missing
|
$98,858
114,247 shares
|
— | 31 Mar 2026 |
| David Francis Melbourne Jr. |
3/4/5
President
|
—
class O/S missing
|
$95,035
106,781 shares
|
— | 14 Aug 2023 |
| Richard J. Clothier |
3/4/5
Director
|
—
class O/S missing
|
$86,535
97,230 shares
|
— | 14 Mar 2022 |
| Michael K. Stern |
3/4/5
Director
|
—
mixed-class rows
|
$80,594
93,055 shares
mixed-class rows
|
— | 14 Jun 2023 |
| TWO SIGMA INVESTMENTS, LP |
13F
Company
|
—
class O/S missing
|
$80,301
92,801 shares
|
— | 31 Mar 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 11 Aug 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 1-18 of 18 reporting-owner rows connected to AQUABOUNTY TECHNOLOGIES INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
18
Largest Forms 3/4/5 holder
Randal J. Kirk
Net 12M change
$0
Latest report
28 Oct 2025
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Randal J. Kirk | 10%+ Owner | $4,752,446 | Mixed | 23 Nov 2021 | ||
| Erin S. Sharp | Director | $166,479 | Mixed | 14 Jun 2023 | ||
| David Francis Melbourne Jr. | President | $95,035 | Mixed | 14 Aug 2023 | ||
| Richard J. Clothier | Director | $86,535 | Mixed | 14 Mar 2022 | ||
| Michael K. Stern | Director | $80,594 | Mixed | 14 Jun 2023 | ||
| Gail Sharps Myers | Director | $58,723 | Mixed | 14 Jun 2023 | ||
| Ricardo J. Alvarez | Director | $58,344 | Mixed | 14 Jun 2023 | ||
| Christine St.Clare | Director | $57,850 | Mixed | 14 Jun 2023 | ||
| James C. Turk Jr. | Director | $15,512 | Mixed | 14 Mar 2022 | ||
| Bensler Graydon | Director | $0 | Mixed | 28 Oct 2025 | ||
| Braeden Lichti | Director | $0 | Mixed | 28 Oct 2025 | ||
| Angela M. Olsen | General Counsel & Corp Sec | Mixed | 14 Jun 2023 | |||
| Rick L. Sterling | Director | Mixed | 14 Jun 2023 | |||
| Sylvia Wulf | CEO & Director, Director | Mixed | 14 Jun 2023 | |||
| David A. Frank | Chief Financial Officer | Mixed | 14 Jun 2023 | |||
| Alejandro Rojas | Chief Operating Officer | Mixed | 14 Jun 2023 | |||
| Theodore J. Fisher | Director | Mixed | 14 Mar 2022 | |||
| Alana D. Kirk | Director | Mixed | 14 Mar 2022 |
Recent insider transactions for AQUABOUNTY TECHNOLOGIES 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Graydon Bensler | AQB | Common Stock | 0 | 0 | 28 Oct 2025 | Direct | ||||
| Lichti Braeden | AQB | Common Stock | 0 | 0 | 28 Oct 2025 | Direct |
* marks a reported price that did not pass the local price check.