Philip Mazzara is CLO & Secretary at Astera Labs, Inc. (ALAB). They have made 12 open-market trades across 1 company since 2024, most recently 2026-08-17.
CIK 0001998163
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 12 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ALAB | 96,542 | $27.6M |
Shares reported on the most recent Form 4, priced at the 2026-08-19 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ALAB | SELL | 2026-08-17 | 2026-08-19 | $340.50 | $2.3M | +2.9% | +5.1% | — |
| ALAB | SELL | 2026-05-21 | 2026-05-26 | $291.03 | $232K | -1.4% | +24.2% | -13.6% |
| ALAB | SELL | 2026-05-18 | 2026-05-20 | $231.78 | $3.3M | +23.5% | +52.7% | +5.4% |
| ALAB | SELL · 10b5-1 | 2026-04-01 | 2026-04-03 | $107.77 | $1.1M | +47.3% | +72.1% | +247.6% |
| ALAB | SELL | 2026-03-02 | 2026-03-04 | $117.47 | $1.2M | +6.6% | -1.3% | +197.7% |
| ALAB | SELL | 2026-02-17 | 2026-02-19 | $123.80 | $600K | -15.7% | -4.9% | +120.6% |
| ALAB | SELL | 2026-01-02 | 2026-01-06 | $178.41 | $1.8M | +15.2% | -9.6% | -25.3% |
| ALAB | SELL | 2025-11-17 | 2025-11-19 | $144.69 | $1.3M | -7.5% | +6.4% | -19.9% |
| ALAB | SELL · 10b5-1 | 2025-10-01 | 2025-10-03 | $192.37 | $3.2M | -29.4% | -16.2% | -21.4% |
| ALAB | SELL · 10b5-1 | 2025-08-28 | 2025-09-02 | $188.71 | $3.4M | +31.3% | +19.9% | -5.5% |
| ALAB | SELL | 2025-08-18 | 2025-08-20 | $183.51 | $2.7M | +0.2% | +41.0% | -19.8% |
| ALAB | SELL · 10b5-1 | 2025-05-16 | 2025-05-20 | $90.23 | $2.9M | -0.7% | -0.5% | +99.2% |
| ALAB | SELL · 10b5-1 | 2025-02-18 | 2025-02-20 | $88.06 | $10.1M | -21.7% | -17.0% | +3.7% |
| ALAB | SELL | 2024-11-18 | 2024-11-20 | $90.81 | $456K | +13.8% | +29.1% | -8.9% |
| ALAB | SELL · 10b5-1 | 2024-11-07 | 2024-11-12 | $96.43 | $8.8M | +12.0% | +34.0% | +13.1% |
| ALAB | SELL · 10b5-1 | 2024-10-09 | 2024-10-11 | $60.74 | $3.0M | +1.5% | +38.2% | +94.2% |
| ALAB | SELL · 10b5-1 | 2024-08-23 | 2024-08-26 | $41.52 | $438K | -7.0% | +21.2% | +149.6% |
| ALAB | SELL | 2024-08-23 | 2024-08-28 | $40.97 | $2.5M | -12.7% | +22.0% | +140.4% |
| ALAB | SELL | 2024-08-16 | 2024-08-20 | $41.79 | $607K | +10.4% | +20.8% | +131.7% |
| ALAB | SELL | 2024-05-16 | 2024-05-20 | $76.56 | $141K | -10.7% | -12.6% | -43.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.