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A

$ Value

$0

Shares

222,670

Price

$0

Filed

Feb 27

Insider

Name

Roberts M Scot

Title

Chief Scientific Officer

CIK

0001705905

Roles

Officer

Transaction Details

Transaction Date

2026-02-26

Code

A

Table

Derivative

Ownership

Direct

Equity Swap

No

Shares After

222,670

Footnotes

The shares underlying the option become vested and exercisable over four (4) years with 25% of the shares vesting on February 26, 2027, with the remainder vesting in equal monthly installments for the following thirty-six (36) months, subject to the reporting person's continued service on each applicable vesting date. | Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested. | The RSUs become vested over four (4) years with 25% of the shares vesting February 26, 2027, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

Filing Info

Accession No.

0001705905-26-000008

Form Type

4

Issuer CIK

0001326190

Roberts M Scot's History

Date Ticker Type Value
2026-02-26 ALT A $0
2026-02-26 ALT A $0
2026-02-02 ALT M $0
2026-02-02 ALT F $13K
2026-02-02 ALT M $0
2026-01-31 ALT A $17K
2026-01-30 ALT M $0
2026-01-30 ALT F $16K
2026-01-30 ALT M $0
2026-01-27 ALT M $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