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DAVID M. BLACKMAN

CIK 1465427 · President and CEO · last filed 2020-11-16

DAVID M. BLACKMAN is a President and CEO who has filed 61 SEC Form 4 insider transactions across 8 companies since 2009. The most recent filing shows the insider had shares withheld for taxes covering $1.3K of TRMT on Nov 16, 2020. Across all open-market trades the lifetime net is +$25.9K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $344.9K across reported positions. 23 SEC filings were submitted jointly with OFFICE PROPERTIES INCOME TRUST.

"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.

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Disclosed Exposure

$344.9K

Companies

8

Total Filings

61

Lifetime Open-Market Net

$25.9K

Filer Profile

Reported Address
C/O THE RMR GROUP LLC
TWO NEWTON PL., 255 WASH. ST., STE. 300
NEWTON, MA 02458
Formerly Known As
Blackman David M (2009–2015)
Related Filers
OFFICE PROPERTIES INCOME TRUST — 23 joint filings, latest 2020-09-23
INCOME REIT SELECT — 15 joint filings, latest 2019-01-02
RMR GROUP INC. — 10 joint filings, latest 2020-09-23
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
Tremont Mortgage Trust (TRMT) Delisted President and CEO 40,957 $5.29 $216.7K $25.9K 16 2020-11-16
RMR Exec. VP of The RMR Group LLC 17,641 $19.55 $344.9K $0 9 2020-09-23
OFFICE PROPERTIES INCOME TRUST (OPINL) Delisted President and CEO 58,327 $3.90 $227.5K $0 2 2020-09-23
OFFICE PROPERTIES INCOME TRUST (OPINI) Delisted President and CEO 46,100 $25.04 $1.15M $0 6 2020-05-28
SELECT INCOME REIT (SIR) Delisted President and CEO 0 — — $0 14 2019-01-02
OFFICE PROPERTIES INCOME TRUST (GOVNI) Delisted President & CEO 51,460 — — $0 4 2018-09-26
OFFICE PROPERTIES INCOME TRUST (GOVN.I) Delisted President and COO 43,090 — — $0 2 2016-09-27
OFFICE PROPERTIES INCOME TRUST (GOV) Delisted President & COO 9,662 — — $0 8 2015-09-25

Recent Filings

61 filings
Insider 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
2020-11-16 Tremont Mortgage Trust (TRMT) Delisted Tax (F) −343 -$1.3K EDGAR
2020-09-23 Tremont Mortgage Trust (TRMT) Delisted Tax (F) −1,789 -$5.0K EDGAR
2020-09-23 RMR Tax (F) −2,058 -$57.9K EDGAR
2020-09-23 OFFICE PROPERTIES INCOME TRUST (OPINL) Delisted Tax (F) −2,773 -$59.9K EDGAR
2020-09-21 RMR Grant (A) +5,000 $0 EDGAR
2020-09-21 OFFICE PROPERTIES INCOME TRUST (OPINL) Delisted Grant (A) +15,000 $0 EDGAR
2020-09-21 Tremont Mortgage Trust (TRMT) Delisted Grant (A) +10,000 $0 EDGAR
2020-05-28 OFFICE PROPERTIES INCOME TRUST (OPINI) Delisted Grant (A) +3,500 $0 EDGAR
2020-05-13 Tremont Mortgage Trust (TRMT) Delisted Grant (A) +3,000 $0 EDGAR
2019-11-15 Tremont Mortgage Trust (TRMT) Delisted Tax (F) −447 -$2.2K EDGAR
Showing 1–10 of 61
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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.