Insider transactions

David S Rosenblatt

CIK 1237860 · Chief Executive Officer · last filed 2026-09-10

"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
$26.47M
Companies
9
Total Filings
136
Lifetime Open-Market Net
-$13.79M

Charts

Trading activity, where the exposure sits, and each trade against the stock price.

TWTR price and trades

Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.

Shares held

Shares owned after each reported transaction on this company (direct holdings as reported).

Open-market buying and selling

by month

Dollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.

Exposure by company

latest
OfficerDirector10% owner* stale (no filing in 3 yrs)

Most recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.

Filer Profile

Reported Address
C/O IAC INC.
555 WEST 18TH STREET
NEW YORK, NY 10011
Related Filers
Match Group, Inc. — 67 joint filings, latest 2020-07-02
IAC Inc. — 24 joint filings, latest 2026-07-20
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 in each company: direct shares plus every indirect holder (trusts, LLCs, partnerships, family members) on the latest Form 4 that lists them. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
DIBS Chief Executive Officer 2,992,938 $5.72 $17.12M -$1.78M 26 2026-09-10
PPLI Director 97,261 $43.76 $4.26M $0 4 2026-07-20
ETSY Director 6,032 $89.00 $536.8K $0 3 2026-06-11
IAC Inc. (IAC) Delisted Director 90,056 $42.24 $3.80M $201.1K 40 2025-10-02
TWITTER, INC. (TWTR) Delisted Director 95,374 $53.70 $5.12M -$11.70M 18 2022-10-31
MTCH Director 109,560 $41.63 $4.56M $0 1 2020-07-02
Match Group, Inc. (IACI) Delisted Director 48,717 — — -$512.0K 38 2015-12-03
GSI COMMERCE INC (GSIC) Delisted Director 7,760 — — $0 2 2011-06-03
Match Group, Inc. (IACIZ) Delisted Director — — — $0 1 2008-12-05

Holdings By Holder

Who holds the shares on record: the insider directly, and each trust, LLC, partnership or family member reported as an indirect holder on the latest Form 4 that lists them. Holder names come from the filing's footnotes. Rows under No longer reported appeared on earlier filings but not the latest one, usually because the holder was emptied or folded into another; they are not counted in the total.
Symbol Holder Shares Share of Total Reported
DIBS Direct 2,257,636 75.4% 2026-09-10
By 2012 David Rosenblatt Family Trust dtd 11/30/2012 712,802 23.8% 2026-09-10
By 2024 Laura Thalheimer Rosenblatt Family Trust effective 4/1/2024 22,500 0.8% 2026-09-10
Total 2,992,938
No longer reported
By 2012 Laura T. Rosenblatt Family Trust dtd 12/4/2012 22,500 — last 2025-03-12
TWTR Direct 95,374 100.0% 2019-05-31
See footnote 0 0.0% 2022-10-31
Total 95,374

Recent Filings · Page 8 of 14

136 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, so not all of them end in a sale. Under each notice: the role the filer ticked on it, and whether a sale followed (a Form 4 sale within 30 days, or a sale listed on a later notice).
Filed Symbol Action Net Shares Net $ Link
2019-06-14 IAC Inc. (IAC) Delisted Grant (A) — $0 EDGAR
2019-05-31 TWITTER, INC. (TWTR) Delisted Grant (A) +6,056 $0 EDGAR
2019-05-10 TWITTER, INC. (TWTR) Delisted Exer (M) +27,000 $49.4K EDGAR
2019-02-14 IAC Inc. (IAC) Delisted Sell (S) +4,528 $999.1K EDGAR
2018-12-18 IAC Inc. (IAC) Delisted Exer (M) +1,268 $0 EDGAR
2018-11-02 TWITTER, INC. (TWTR) Delisted Mixed — -$974.2K EDGAR
2018-06-29 IAC Inc. (IAC) Delisted Grant (A) — $0 EDGAR
2018-06-26 IAC Inc. (IAC) Delisted Exer (M) +1,079 $0 EDGAR
2018-06-21 IAC Inc. (IAC) Delisted Exer (M) +796 $0 EDGAR
2018-06-01 TWITTER, INC. (TWTR) Delisted Grant (A) +6,548 $0 EDGAR
Showing 71–80 of 136
Page 8 of 14
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, and an amended or cancelled notice is not listed. 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. Someone who is no longer an officer or director (or never was) files no Form 4, so for them a sale shows up only on a later notice, which lists the seller's sales from the 3 months before it. "No sale on file" means neither record shows one; a dash in Net $ means the value filed on the notice doesn't fit the stock's price (likely a typo).