Key facts
- MAMO - Massimo Group has 8 insiders with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 8 Insiders of Massimo Group
- Symbol
- MAMO on Nasdaq
- Location
- Garland, TX
Change
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Research use
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 25 May 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 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 |
Massimo Group executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| David Shan | Chief Executive Officer, Director, 10%+ Owner | $74,289,600 | Mixed | 29 May 2025 | ||
| Yunhao Chen | Chief Financial Officer | $308,001 | Mixed | 29 May 2025 | ||
| Michael Glenn Smith | Former Officer | $115,500 | Mixed | 29 May 2025 | ||
| Paolo Pietrogrande | Director | $20,790 | Mixed | 29 May 2025 | ||
| Mark Sheffield | Director | $20,790 | Mixed | 29 May 2025 | ||
| Ting Zhu | Director | $20,790 | Mixed | 29 May 2025 | ||
| Quenton Petersen | Vice President | Mixed | 01 Mar 2025 | |||
| Mingqiu Xu | Chief Financial Officer | Mixed | 02 Mar 2026 |
Top shareholders of Massimo Group (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: 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.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| David Shan |
3/4/5
13D/G
|
Chief Executive Officer, Director, 10%+ Owner |
77%
from 13D/G
|
32,160,000
|
$74,289,600 | — | 29 May 2025 | |
| Asia International Securities Exchange Co., Ltd. |
13D/G
|
— |
1%
|
399,999
|
$1,559,996 | $0 | 20 Jun 2025 | |
| Yunhao Chen |
3/4/5
|
Chief Financial Officer |
0.33%
|
133,334
|
$308,001 | — | 29 May 2025 | |
| Michael Glenn Smith |
3/4/5
|
Former Officer |
0.13%
|
50,000
|
$115,500 | — | 29 May 2025 | |
| Mark Sheffield |
3/4/5
|
Director |
0.02%
|
9,000
|
$20,790 | — | 29 May 2025 | |
| Paolo Pietrogrande |
3/4/5
|
Director |
0.02%
|
9,000
|
$20,790 | — | 29 May 2025 | |
| Ting Zhu |
3/4/5
|
Director |
0.02%
|
9,000
|
$20,790 | — | 29 May 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.31%
|
122,434
|
$121,968 | — | 31 Mar 2026 | |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.11%
|
42,600
|
$42,430 | — | 31 Mar 2026 | |
| VANGUARD FIDUCIARY TRUST CO |
13F
|
Company |
0.05%
|
21,231
|
$21,146 | — | 31 Mar 2026 | |
| UBS Group AG |
13F
|
Company |
0.04%
|
15,242
|
$15,181 | — | 31 Mar 2026 | |
| BlackRock, Inc. |
13F
|
Company |
0.04%
|
14,292
|
$14,238 | — | 31 Mar 2026 | |
| XTX Topco Ltd |
13F
|
Company |
0.03%
|
13,130
|
$13,080 | — | 31 Mar 2026 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.03%
|
12,600
|
$12,552 | — | 31 Mar 2026 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.03%
|
10,241
|
$10,202 | — | 31 Mar 2026 | |
| Tower Research Capital LLC (TRC) |
13F
|
Company |
0.02%
|
9,052
|
$9,018 | — | 31 Mar 2026 | |
| Advisory Services Network, LLC |
13F
|
Company |
0%
|
91
|
$91 | — | 31 Mar 2026 | |
| SBI Securities Co., Ltd. |
13F
|
Company |
0%
|
6
|
$6 | — | 31 Mar 2026 |
Recent Insider Transactions by Companies or Individuals for Massimo Group
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Paolo Pietrogrande | MAMO | Common Stock | Award | 33.3% | 2,250 | 9,000 | 29 May 2025 | Direct | ||
| Yunhao Chen | MAMO | Common Stock | Award | 23.1% | 25,000 | 133,334 | 29 May 2025 | Direct | ||
| Mark Sheffield | MAMO | Common Stock | Award | 33.3% | 2,250 | 9,000 | 29 May 2025 | Direct | ||
| Michael Glenn Smith | MAMO | Common Stock | Award | 100% | 25,000 | 50,000 | 29 May 2025 | Direct | ||
| David Shan | MAMO | Common Stock | Award | 0.12% | 37,500 | 32,160,000 | 29 May 2025 | Direct | ||
| Ting Zhu | MAMO | Common Stock | Award | 33.3% | 2,250 | 9,000 | 29 May 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.