Insider · CIK 0001652478
Alex Spiro
Files at MTZ (MASTEC INC), GLAE (GlassBridge Enterprises, Inc.), TMC (TMC the metals Co Inc.), MRT (Marti Technologies, Inc.). First filing -, latest -.
In brief
Alex Spiro files SEC Form 4 as director at MTZ (MASTEC INC), and also at GLAE (GlassBridge Enterprises, Inc.), TMC (TMC the metals Co Inc.), MRT (Marti Technologies, Inc.). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.
A track record needs three past buys with six months of prices behind them; Alex Spiro has 0, so none is measured yet.
Signals
This insider’s open-market buys and sells, scored.
Transactions
Every row this insider has filed, 7 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 30, 2026 | MRT Marti Technologies, Inc. | AGrant or award Class A Ordinary Shares, par value $0.0001 per share | +2,666 | $0.00 | $0 | 59,280 | 12 d ago |
| Aug 14, 2026 | MTZ MASTEC INC | AGrant or award Common Stock | +139 | $0.00 | $0 | 139 | Aug 18, 2026 |
| Jun 30, 2026 | MRT Marti Technologies, Inc. | AGrant or award Class A Ordinary Shares, par value $0.0001 per share | +2,666 | $0.00 | $0 | 56,614 | Jul 2, 2026 |
| Mar 31, 2026 | MRT Marti Technologies, Inc. | AGrant or award Class A Ordinary Shares, par value $0.0001 per share | +2,666 | $0.00 | $0 | 53,948 | Apr 2, 2026 |
| Sep 2, 2025 | TMC TMC the metals Co Inc. | AGrant or award Common Shares | +1,750,000 | $0.00 | $0 | 1,750,000 | Sep 4, 2025 |
| Sep 22, 2023 | GLAE GlassBridge Enterprises, Inc. | AGrant or award Restricted Stock Unitderivative | +3,039 | $0.00 | $0 | 3,039 | Mar 7, 2024 |
| Sep 22, 2023 | GLAE GlassBridge Enterprises, Inc. | AGrant or award Non-qualified Stock Optionderivative | +1,075 | $0.00 | $0 | 1,075 | Mar 7, 2024 |
Questions about Alex Spiro
Answered from the filings on this page, as of the latest one.
Is Alex Spiro buying or selling?
Alex Spiro has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.
How did Alex Spiro's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Alex Spiro has 0.
Where does Alex Spiro file Form 4?
Alex Spiro has filed Form 4 at MTZ (MASTEC INC); GLAE (GlassBridge Enterprises, Inc.); TMC (TMC the metals Co Inc.); MRT (Marti Technologies, Inc.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.