Matthew H. Birenbaum
CIK 1532949 · Executive Vice President & CDO · last filed 2026-08-19
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Loading insider history…
Disclosed Exposure
$0
Companies
2
Total Filings
45
Lifetime Open-Market Net
-$4.62M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Recent Filings · Page 3 of 5
45 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2021-03-03 | AVB | Mixed | −1,523 | $0 | EDGAR |
| 2021-03-01 | AVB | Grant (A) | +3,963 | $0 | EDGAR |
| 2020-03-03 | AVB | Mixed | −5,374 | $0 | EDGAR |
| 2020-02-18 | AVB | Grant (A) | +11,821 | $0 | EDGAR |
| 2019-03-05 | AVB | Mixed | −5,396 | $0 | EDGAR |
| 2019-02-19 | AVB | Grant (A) | +9,588 | $0 | EDGAR |
| 2018-03-05 | AVB | Tax (F) | −4,647 | -$720.5K | EDGAR |
| 2018-02-20 | AVB | Grant (A) | +10,674 | $0 | EDGAR |
| 2017-05-10 | AVB | Mixed | −2,975 | -$525.8K | EDGAR |
| 2017-03-03 | AVB | Mixed | −3,373 | -$572.5K | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.