Comparable stake leader
Thomas J. Herzfeld Advisors, Inc.
SEC ownership of Neostellar Capital Corp.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001509470.
Disclosed value leader
Mark D. Klein
Comparable rows
50/50
Latest evidence
26 Aug 2026
- Public ticker
- NSLR, NSLRL on Nasdaq
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Thomas J. Herzfeld Advisors, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Thomas J. Herzfeld Advisors, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
26 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001509470
- Issuer location
- New York, NY
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 Neostellar Capital 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
Thomas J. Herzfeld Adviso...
Disclosed value leader
Mark D. Klein
Comparable rows
50/50
Latest evidence
26 Aug 2026
13F
13D/G
3/4/5
Lead comparable stake: 0.72%
13D/G row: Thomas J. Herzfeld Advisors, Inc.
Showing 1-8 of 50 holder rows.
Quick read
Thomas J. Herzfeld Advisors, Inc. leads the comparable SEC ownership view at 0.72%.
50 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 Thomas J. Herzfeld Advisors, Inc.'s linked filing trail.
Comparable ownership
Top 5
Thomas J. Herzfeld Advisors, Inc.
0.72%
Mark D. Klein
7.5%
Allison Green
0.88%
Leonard Potter
0.45%
Marc Mazur
0.29%
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 |
|---|---|---|---|---|---|
| Thomas J. Herzfeld Advisors, Inc. |
13F
13D/G
Company
|
0.72%
from 13D/G
|
$9,886,574
788,403 shares
|
— | 30 Jun 2026 |
| Mark D. Klein |
3/4/5
Chairman, CEO and President, Director
|
7.5%
|
$16,884,441
1,758,796 shares
|
+$315,809 | 10 Aug 2026 |
| Allison Green |
3/4/5
Chief Financial Officer, Treasurer and Corporate Secretary
|
0.88%
|
$2,227,572
207,990 shares
|
— | 12 Jun 2026 |
| Leonard Potter |
3/4/5
Director
|
0.45%
|
$1,133,278
105,815 shares
|
— | 10 Jun 2026 |
| Marc Mazur |
3/4/5
Director
|
0.29%
|
$738,454
68,950 shares
|
— | 10 Jun 2026 |
| Lisa Westley |
3/4/5
Director
|
0.25%
|
$630,080
58,831 shares
|
— | 10 Jun 2026 |
| Erik A. Falk |
3/4/5
Director
|
0.21%
|
$511,000
50,000 shares
|
+$511,000 | 26 Aug 2026 |
| Ronald M. Lott |
3/4/5
Director
|
0.09%
|
$235,425
21,517 shares
|
-$143,805 | 23 Jun 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
Net insider flow leans to buying over the last 12 months. Net value: +$683,004.
Buys
$826,809
Insiders: 2
Sells
$143,805
Insiders: 1
Net
+$683,004
Shares: +69,871
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 81,040
Shares: 11,169
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 76,040 | 500 | $760,984 | $6,175 | +$754,809 |
| 3-6 | 5,000 | 10,669 | $65,825 | $137,630 | -$71,805 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-9 of 9 reporting-owner rows connected to Neostellar Capital Corp.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
9
Largest Forms 3/4/5 holder
Mark D. Klein
Net 12M change
+$683,004
Latest report
26 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Mark D. Klein | Chairman, CEO and President, Director | $16,884,441 | +$315,809 | +1.9% | Filing P/S | 10 Aug 2026 |
| Allison Green | Chief Financial Officer, Treasurer and Corporate Secretary | $2,227,572 | Mixed | 12 Jun 2026 | ||
| Leonard Potter | Director | $1,133,278 | Mixed | 10 Jun 2026 | ||
| Marc Mazur | Director | $738,454 | Mixed | 10 Jun 2026 | ||
| Lisa Westley | Director | $630,080 | Mixed | 10 Jun 2026 | ||
| Erik A. Falk | Director | $511,000 | +$511,000 | +100% | Filing P/S | 26 Aug 2026 |
| Ronald M. Lott | Director | $235,425 | -$143,805 | -38% | Mixed | 23 Jun 2026 |
| Richard C. Szuch | Director | $99,635 | Mixed | 10 Jun 2026 | ||
| James Robert Nash | Chief Compliance Officer | Mixed | 15 Mar 2026 |
Recent insider transactions for Neostellar Capital 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Erik A. Falk | NSLR | Common Stock | Purchase | $511,000 | $10.22 | 50,000 | 50,000 | 26 Aug 2026 | By revocable trust | |
| Mark D. Klein | NSLR | Common Stock | Purchase | 1.5% | $249,984 | $9.60 | 26,040 | 1,758,796 | 10 Aug 2026 | Direct |
| Ronald M. Lott | SSSS | Common Stock | Sale | -14.1% | $6,175 | $12.35 | -500 | 3,036 | 23 Jun 2026 | Direct |
| Allison Green | SSSS | Common Stock | Tax liability | -16.7% | -41,815 | 207,990 | 15 Jun 2026 | Direct | ||
| Mark D. Klein | SSSS | Common Stock | Tax liability | -14.5% | -293,265 | 1,732,756 | 15 Jun 2026 | Direct | ||
| Allison Green | SSSS | Common Stock | Award | 31.6% | 60,000 | 249,805 | 12 Jun 2026 | Direct | ||
| Mark D. Klein | SSSS | Common Stock | Award | 20.9% | 350,000 | 2,026,021 | 12 Jun 2026 | Direct | ||
| Lisa Westley | SSSS | Common Stock | Award | 6.39% | 3,536 | 58,831 | 10 Jun 2026 | Direct | ||
| Marc Mazur | SSSS | Common Stock | Award | 5.41% | 3,536 | 68,950 | 10 Jun 2026 | Direct | ||
| Richard C. Szuch | SSSS | Common Stock | Award | 61.3% | 3,536 | 9,303 | 10 Jun 2026 | Direct | ||
| Ronald M. Lott | SSSS | Common Stock | Award | 3,536 | 3,536 | 10 Jun 2026 | Direct | |||
| Leonard Potter | SSSS | Common Stock | Award | 3.46% | 3,536 | 105,815 | 10 Jun 2026 | Direct | ||
| Ronald M. Lott | SSSS | Common Stock | Sale | -50% | $137,630 | $12.90 | -10,669 | 10,669 | 28 Apr 2026 | By Family Trust |
| Mark D. Klein | SSSS | Common Stock | Purchase | 0.15% | $33,125 | $13.25 | 2,500 | 1,676,021 | 22 Apr 2026 | Direct |
| Mark D. Klein | SSSS | Common Stock | Purchase | 0.15% | $32,700 | $13.08 | 2,500 | 1,673,521 | 21 Apr 2026 | Direct |
| Mark D. Klein | SSSS | Common Stock | Tax liability | -1.01% | -17,017 | 1,671,021 | 15 Dec 2025 | Direct | ||
| Allison Green | SSSS | Common Stock | Tax liability | -2.18% | -4,232 | 189,805 | 15 Dec 2025 | Direct | ||
| Mark D. Klein | SSSS | Common Stock | Tax liability | -1% | -17,017 | 1,688,038 | 10 Dec 2025 | Direct | ||
| Allison Green | SSSS | Common Stock | Tax liability | -2.13% | -4,232 | 194,037 | 10 Dec 2025 | Direct | ||
| Mark D. Klein | SSSS | Common Stock | Award | 11.4% | 174,465 | 1,705,055 | 21 Nov 2025 | Direct | ||
| Allison Green | SSSS | Common Stock | Award | 0.48% | 956 | 198,269 | 21 Nov 2025 | Direct | ||
| Richard C. Szuch | SSSS | Common Stock | Award | 5,767 | 5,767 | 03 Sep 2025 | Direct |
* marks a reported price that did not pass the local price check.