$ Value
$0
Shares
48,800
Price
$0
Filed
Sep 29
Insider
Name
GILL JOHN
Title
—
CIK
0001409939
Roles
Transaction Details
Transaction Date
2025-09-25
Code
A
Table
Derivative
Ownership
Direct
Equity Swap
No
Shares After
48,800
Footnotes
Represents a bona fide gift of 2,714 shares of common stock made on January 6, 2022. | Certain Section 16 reports previously filed by the reporting person inadvertently overstated the reporting person's direct common stock ownership by 57 shares. As of the date of this filing, the reporting person does not hold any shares of common stock directly or indirectly. | The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following September 25, 2025, subject to the reporting person's continued service through the applicable vesting date.
Filing Info
GILL JOHN's History
| Date | Ticker | Type | Value |
|---|---|---|---|
| 2026-04-06 | ALT | ▲ | $31K |
| 2025-12-23 | ALT | ▲ | $51K ★ |
| 2025-09-25 | ALT | A | $0 |
| 2022-01-06 | ALT | G | $0 |
Other Insiders at ALT (90d)
| Insider | Bought | Sold | Last |
|---|---|---|---|
|
Durso Jerome Benedict
President and CEO
|
$118K | — | 2026-04-01 |
|
WEAVER GREGORY L
Chief Financial Officer
|
$49K | — | 2026-04-01 |
| GILL JOHN | $31K | — | 2026-04-06 |
| Garg Vipin K | — | — | 2026-01-31 |
|
Roberts M Scot
Chief Scientific Officer
|
— | — | 2026-02-26 |
|
Jordt Raymond M
Chief Business Officer
|
— | — | 2026-01-31 |