Nuburu, Inc.
Nuburu, Inc. (BURU) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · BURU · as of Jun 8, 2026
Activity summary
Buy transactions
1
P-Purchase only
Sell transactions
0
12 Months
Buy/Sell ratio
∞
Buy/Sell (by trades)
Overall sentiment
Nuburu, Inc. insiders have been net buyers of shares over the past 12 Months, which may signal confidence in the company's outlook.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
BURU insider buying and selling by quarter
BURU insider selling · BURU insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · BURU ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
BURU executive sell shares · BURU board member insider trading · BURU insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Dec 31, 2025 | Zamboni Alessandro Co-Chief Executive Officer · Director | Purchase | 4,332,525 | $1.50M⚡ | Form 4 |
| Oct 1, 2025 | Zamboni Alessandro Co-Chief Executive Officer · Director | Award | 355,511 | — | Form 4 |
| Nov 21, 2024 | Seldin David 10 percent owner | Other | 61,085 | — | Form 4 |
| Nov 21, 2024 | Seldin David 10 percent owner | Other | 25,544 | — | Form 4 |
| Nov 21, 2024 | Seldin David 10 percent owner | Other | 5,391 | — | Form 4 |
| Nov 21, 2024 | Seldin David 10 percent owner | Other | 19,979 | — | Form 4 |
| May 10, 2024 | Knaley Brian CEO | Award | 1,828,996 | $246K | Form 4 |
| Aug 9, 2023 | Seldin David 10 percent owner | Sale | 19,777 | $13K | Form 4 |
| Aug 10, 2023 | Seldin David 10 percent owner | Sale | 323,586 | $240K | Form 4 |
| Aug 11, 2023 | Seldin David 10 percent owner | Sale | 1,325 | $919 | Form 4 |
| Aug 9, 2023 | Seldin David 10 percent owner | Sale | 7,859 | $5K | Form 4 |
| Aug 10, 2023 | Seldin David 10 percent owner | Sale | 128,584 | $95K | Form 4 |
| Aug 11, 2023 | Seldin David 10 percent owner | Sale | 527 | $365 | Form 4 |
| Aug 9, 2023 | Seldin David 10 percent owner | Sale | 3,615 | $2K | Form 4 |
| Aug 10, 2023 | Seldin David 10 percent owner | Sale | 59,142 | $44K | Form 4 |
| Aug 11, 2023 | Seldin David 10 percent owner | Sale | 242 | $168 | Form 4 |
| Aug 9, 2023 | Seldin David 10 percent owner | Sale | 2,970 | $2K | Form 4 |
| Aug 10, 2023 | Seldin David 10 percent owner | Sale | 48,597 | $36K | Form 4 |
| Aug 11, 2023 | Seldin David 10 percent owner | Sale | 199 | $138 | Form 4 |
| Aug 9, 2023 | Seldin David 10 percent owner | Sale | 983 | $670 | Form 4 |
| Aug 10, 2023 | Seldin David 10 percent owner | Sale | 16,075 | $12K | Form 4 |
| Aug 11, 2023 | Seldin David 10 percent owner | Sale | 66 | $46 | Form 4 |
| Aug 9, 2023 | Seldin David 10 percent owner | Sale | 348 | $237 | Form 4 |
| Aug 10, 2023 | Seldin David 10 percent owner | Sale | 5,687 | $4K | Form 4 |
| Aug 11, 2023 | Seldin David 10 percent owner | Sale | 23 | $16 | Form 4 |
Zamboni Alessandro
Co-Chief Executive Officer · Director
Date
Dec 31
Shares
4,332,525
Price
$0.35
Value
$1.50M ⚡
Zamboni Alessandro
Co-Chief Executive Officer · Director
Date
Oct 1
Shares
355,511
Price
—
Value
—
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About BURU insider trading
BURU insider trades
Nuburu, Inc. (BURU) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Zamboni Alessandro (Co-Chief Executive Officer · Director). Over the past 12 months, 1 insiders have filed transactions with the SEC. BURU insiders have been primarily buying, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Nuburu, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
BURU insider trading · 5 questionsThe insiders of Nuburu, Inc. (BURU) include executives and directors such as Zamboni Alessandro (Co-Chief Executive Officer · Director), among others. Over the past 12 months, 1 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026