ATYR aTyr Pharma, Inc.

NASDAQ
$0.54

aTyr Pharma, Inc. (ATYR) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal Bullish Insiders bought more than they sold over this window — uncommon at any size.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 0 sellers in the last 90 days
Insiders buying
1
3 transactions
Insiders selling
3
3 transactions
Purchases
$961.4K
1,100,000 shares
Sales
$6.3K
6,421 shares
Net activity
$955.2K
purchases less sales

How much of that selling was preplanned? 0% planned / 100% discretionary

10b5-1 plan sales $0 0 transactions · 0 shares
Discretionary sales $6.3K 3 transactions · 6,421 shares

Largest single sale: $3.7K.

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: May 27, 2026 , by SCHIMMEL PAUL .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
SCHIMMEL PAUL Director Buy 100,000 $0.50 $49.6K 779,143
Shukla Sanjay President and CEO Sell 3,745 $0.98 $3.7K 153,553 −2.4% of holding
Broadfoot Jill Marie Chief Financial Officer Sell 1,558 $0.98 $1.5K 37,296 −4% of holding
DENYES NANCY General Counsel Sell 1,118 $0.98 $1.1K 33,124 −3.3% of holding
SCHIMMEL PAUL Director Buy 317,999 $0.94 $299.4K 1,413,023
SCHIMMEL PAUL Director Buy 682,001 $0.90 $612.4K 1,095,024

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.